Primitive Type u8 

The 8-bit unsigned integer type.

Implementations

impl u8

pub const MIN: Self = 0u8

The smallest value that can be represented by this integer type.

Examples

assert_eq!(u8::MIN, 0);

pub const MAX: Self = 255u8

The largest value that can be represented by this integer type (2⁸ − 1).

Examples

assert_eq!(u8::MAX, 255);

pub const BITS: u32 = 8u32

Available on non-crate feature ferrocene_certified only.

The size of this integer type in bits.

Examples

assert_eq!(u8::BITS, 8);

pub const fn count_ones(self) -> u32

Returns the number of ones in the binary representation of self.

Examples

let n = 0b01001100u8;
assert_eq!(n.count_ones(), 3);

let max = u8::MAX;
assert_eq!(max.count_ones(), 8);

let zero = 0u8;
assert_eq!(zero.count_ones(), 0);

pub const fn count_zeros(self) -> u32

Available on non-crate feature ferrocene_certified only.

Returns the number of zeros in the binary representation of self.

Examples

let zero = 0u8;
assert_eq!(zero.count_zeros(), 8);

let max = u8::MAX;
assert_eq!(max.count_zeros(), 0);

pub const fn leading_zeros(self) -> u32

Available on non-crate feature ferrocene_certified only.

Returns the number of leading zeros in the binary representation of self.

Depending on what you’re doing with the value, you might also be interested in the ilog2 function which returns a consistent number, even if the type widens.

Examples

let n = u8::MAX >> 2;
assert_eq!(n.leading_zeros(), 2);

let zero = 0u8;
assert_eq!(zero.leading_zeros(), 8);

let max = u8::MAX;
assert_eq!(max.leading_zeros(), 0);

pub const fn trailing_zeros(self) -> u32

Available on non-crate feature ferrocene_certified only.

Returns the number of trailing zeros in the binary representation of self.

Examples

let n = 0b0101000u8;
assert_eq!(n.trailing_zeros(), 3);

let zero = 0u8;
assert_eq!(zero.trailing_zeros(), 8);

let max = u8::MAX;
assert_eq!(max.trailing_zeros(), 0);

pub const fn leading_ones(self) -> u32

Available on non-crate feature ferrocene_certified only.

Returns the number of leading ones in the binary representation of self.

Examples

let n = !(u8::MAX >> 2);
assert_eq!(n.leading_ones(), 2);

let zero = 0u8;
assert_eq!(zero.leading_ones(), 0);

let max = u8::MAX;
assert_eq!(max.leading_ones(), 8);

pub const fn trailing_ones(self) -> u32

Available on non-crate feature ferrocene_certified only.

Returns the number of trailing ones in the binary representation of self.

Examples

let n = 0b1010111u8;
assert_eq!(n.trailing_ones(), 3);

let zero = 0u8;
assert_eq!(zero.trailing_ones(), 0);

let max = u8::MAX;
assert_eq!(max.trailing_ones(), 8);

pub const fn bit_width(self) -> u32

🔬This is a nightly-only experimental API. (uint_bit_width #142326)

Available on non-crate feature ferrocene_certified only.

Returns the minimum number of bits required to represent self.

This method returns zero if self is zero.

Examples

#![feature(uint_bit_width)]

assert_eq!(0_u8.bit_width(), 0);
assert_eq!(0b111_u8.bit_width(), 3);
assert_eq!(0b1110_u8.bit_width(), 4);
assert_eq!(u8::MAX.bit_width(), 8);

pub const fn isolate_highest_one(self) -> Self

🔬This is a nightly-only experimental API. (isolate_most_least_significant_one #136909)

Available on non-crate feature ferrocene_certified only.

Returns self with only the most significant bit set, or 0 if the input is 0.

Examples

#![feature(isolate_most_least_significant_one)]

let n: u8 = 0b_01100100;

assert_eq!(n.isolate_highest_one(), 0b_01000000);
assert_eq!(0_u8.isolate_highest_one(), 0);

pub const fn isolate_lowest_one(self) -> Self

🔬This is a nightly-only experimental API. (isolate_most_least_significant_one #136909)

Available on non-crate feature ferrocene_certified only.

Returns self with only the least significant bit set, or 0 if the input is 0.

Examples

#![feature(isolate_most_least_significant_one)]

let n: u8 = 0b_01100100;

assert_eq!(n.isolate_lowest_one(), 0b_00000100);
assert_eq!(0_u8.isolate_lowest_one(), 0);

pub const fn highest_one(self) -> Option<u32>

🔬This is a nightly-only experimental API. (int_lowest_highest_one #145203)

Available on non-crate feature ferrocene_certified only.

Returns the index of the highest bit set to one in self, or None if self is 0.

Examples

#![feature(int_lowest_highest_one)]

assert_eq!(0x0_u8.highest_one(), None);
assert_eq!(0x1_u8.highest_one(), Some(0));
assert_eq!(0x10_u8.highest_one(), Some(4));
assert_eq!(0x1f_u8.highest_one(), Some(4));

pub const fn lowest_one(self) -> Option<u32>

🔬This is a nightly-only experimental API. (int_lowest_highest_one #145203)

Available on non-crate feature ferrocene_certified only.

Returns the index of the lowest bit set to one in self, or None if self is 0.

Examples

#![feature(int_lowest_highest_one)]

assert_eq!(0x0_u8.lowest_one(), None);
assert_eq!(0x1_u8.lowest_one(), Some(0));
assert_eq!(0x10_u8.lowest_one(), Some(4));
assert_eq!(0x1f_u8.lowest_one(), Some(0));

pub const fn cast_signed(self) -> i8

Available on non-crate feature ferrocene_certified only.

Returns the bit pattern of self reinterpreted as a signed integer of the same size.

This produces the same result as an as cast, but ensures that the bit-width remains the same.

Examples

let n = u8::MAX;

assert_eq!(n.cast_signed(), -1i8);

pub const fn rotate_left(self, n: u32) -> Self

Available on non-crate feature ferrocene_certified only.

Shifts the bits to the left by a specified amount, n, wrapping the truncated bits to the end of the resulting integer.

Please note this isn’t the same operation as the << shifting operator!

Examples

let n = 0x82u8;
let m = 0xa;

assert_eq!(n.rotate_left(2), m);

pub const fn rotate_right(self, n: u32) -> Self

Available on non-crate feature ferrocene_certified only.

Shifts the bits to the right by a specified amount, n, wrapping the truncated bits to the beginning of the resulting integer.

Please note this isn’t the same operation as the >> shifting operator!

Examples

let n = 0xau8;
let m = 0x82;

assert_eq!(n.rotate_right(2), m);

pub const fn funnel_shl(self, rhs: Self, n: u32) -> Self

🔬This is a nightly-only experimental API. (funnel_shifts #145686)

Available on non-crate feature ferrocene_certified only.

Performs a left funnel shift (concatenates self with rhs, with self making up the most significant half, then shifts the combined value left by n, and most significant half is extracted to produce the result).

Please note this isn’t the same operation as the << shifting operator or rotate_left, although a.funnel_shl(a, n) is equivalent to a.rotate_left(n).

Panics

If n is greater than or equal to the number of bits in self

Examples

Basic usage:

#![feature(funnel_shifts)]
let a = 0x82u8;
let b = 0x36u8;
let m = 0x8;

assert_eq!(a.funnel_shl(b, 2), m);

pub const fn funnel_shr(self, rhs: Self, n: u32) -> Self

🔬This is a nightly-only experimental API. (funnel_shifts #145686)

Available on non-crate feature ferrocene_certified only.

Performs a right funnel shift (concatenates self and rhs, with self making up the most significant half, then shifts the combined value right by n, and least significant half is extracted to produce the result).

Please note this isn’t the same operation as the >> shifting operator or rotate_right, although a.funnel_shr(a, n) is equivalent to a.rotate_right(n).

Panics

If n is greater than or equal to the number of bits in self

Examples

Basic usage:

#![feature(funnel_shifts)]
let a = 0x82u8;
let b = 0x36u8;
let m = 0x8d;

assert_eq!(a.funnel_shr(b, 2), m);

pub const fn swap_bytes(self) -> Self

Available on non-crate feature ferrocene_certified only.

Reverses the byte order of the integer.

Examples

let n = 0x12u8;
let m = n.swap_bytes();

assert_eq!(m, 0x12);

pub const fn reverse_bits(self) -> Self

Available on non-crate feature ferrocene_certified only.

Reverses the order of bits in the integer. The least significant bit becomes the most significant bit, second least-significant bit becomes second most-significant bit, etc.

Examples

let n = 0x12u8;
let m = n.reverse_bits();

assert_eq!(m, 0x48);
assert_eq!(0, 0u8.reverse_bits());

pub const fn from_be(x: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Converts an integer from big endian to the target’s endianness.

On big endian this is a no-op. On little endian the bytes are swapped.

Examples

let n = 0x1Au8;

if cfg!(target_endian = "big") {
    assert_eq!(u8::from_be(n), n)
} else {
    assert_eq!(u8::from_be(n), n.swap_bytes())
}

pub const fn from_le(x: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Converts an integer from little endian to the target’s endianness.

On little endian this is a no-op. On big endian the bytes are swapped.

Examples

let n = 0x1Au8;

if cfg!(target_endian = "little") {
    assert_eq!(u8::from_le(n), n)
} else {
    assert_eq!(u8::from_le(n), n.swap_bytes())
}

pub const fn to_be(self) -> Self

Available on non-crate feature ferrocene_certified only.

Converts self to big endian from the target’s endianness.

On big endian this is a no-op. On little endian the bytes are swapped.

Examples

let n = 0x1Au8;

if cfg!(target_endian = "big") {
    assert_eq!(n.to_be(), n)
} else {
    assert_eq!(n.to_be(), n.swap_bytes())
}

pub const fn to_le(self) -> Self

Available on non-crate feature ferrocene_certified only.

Converts self to little endian from the target’s endianness.

On little endian this is a no-op. On big endian the bytes are swapped.

Examples

let n = 0x1Au8;

if cfg!(target_endian = "little") {
    assert_eq!(n.to_le(), n)
} else {
    assert_eq!(n.to_le(), n.swap_bytes())
}

pub const fn checked_add(self, rhs: Self) -> Option<Self>

Available on non-crate feature ferrocene_certified only.

Checked integer addition. Computes self + rhs, returning None if overflow occurred.

Examples

assert_eq!((u8::MAX - 2).checked_add(1), Some(u8::MAX - 1));
assert_eq!((u8::MAX - 2).checked_add(3), None);

pub const fn strict_add(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Strict integer addition. Computes self + rhs, panicking if overflow occurred.

Panics

Overflow behavior

This function will always panic on overflow, regardless of whether overflow checks are enabled.

Examples

assert_eq!((u8::MAX - 2).strict_add(1), u8::MAX - 1);

The following panics because of overflow:

let _ = (u8::MAX - 2).strict_add(3);

pub const unsafe fn unchecked_add(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Unchecked integer addition. Computes self + rhs, assuming overflow cannot occur.

Calling x.unchecked_add(y) is semantically equivalent to calling x.checked_add(y).unwrap_unchecked().

If you’re just trying to avoid the panic in debug mode, then do not use this. Instead, you’re looking for wrapping_add.

Safety

This results in undefined behavior when self + rhs > u8::MAX or self + rhs < u8::MIN, i.e. when checked_add would return None.

pub const fn checked_add_signed(self, rhs: i8) -> Option<Self>

Available on non-crate feature ferrocene_certified only.

Checked addition with a signed integer. Computes self + rhs, returning None if overflow occurred.

Examples

assert_eq!(1u8.checked_add_signed(2), Some(3));
assert_eq!(1u8.checked_add_signed(-2), None);
assert_eq!((u8::MAX - 2).checked_add_signed(3), None);

pub const fn strict_add_signed(self, rhs: i8) -> Self

Available on non-crate feature ferrocene_certified only.

Strict addition with a signed integer. Computes self + rhs, panicking if overflow occurred.

Panics

Overflow behavior

This function will always panic on overflow, regardless of whether overflow checks are enabled.

Examples

assert_eq!(1u8.strict_add_signed(2), 3);

The following panic because of overflow:

let _ = 1u8.strict_add_signed(-2);

let _ = (u8::MAX - 2).strict_add_signed(3);

pub const fn checked_sub(self, rhs: Self) -> Option<Self>

Available on non-crate feature ferrocene_certified only.

Checked integer subtraction. Computes self - rhs, returning None if overflow occurred.

Examples

assert_eq!(1u8.checked_sub(1), Some(0));
assert_eq!(0u8.checked_sub(1), None);

pub const fn strict_sub(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Strict integer subtraction. Computes self - rhs, panicking if overflow occurred.

Panics

Overflow behavior

This function will always panic on overflow, regardless of whether overflow checks are enabled.

Examples

assert_eq!(1u8.strict_sub(1), 0);

The following panics because of overflow:

let _ = 0u8.strict_sub(1);

pub const unsafe fn unchecked_sub(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Unchecked integer subtraction. Computes self - rhs, assuming overflow cannot occur.

Calling x.unchecked_sub(y) is semantically equivalent to calling x.checked_sub(y).unwrap_unchecked().

If you’re just trying to avoid the panic in debug mode, then do not use this. Instead, you’re looking for wrapping_sub.

If you find yourself writing code like this:

if foo >= bar {
    // SAFETY: just checked it will not overflow
    let diff = unsafe { foo.unchecked_sub(bar) };
    // ... use diff ...
}

Consider changing it to

if let Some(diff) = foo.checked_sub(bar) {
    // ... use diff ...
}

As that does exactly the same thing – including telling the optimizer that the subtraction cannot overflow – but avoids needing unsafe.

Safety

This results in undefined behavior when self - rhs > u8::MAX or self - rhs < u8::MIN, i.e. when checked_sub would return None.

pub const fn checked_sub_signed(self, rhs: i8) -> Option<Self>

Available on non-crate feature ferrocene_certified only.

Checked subtraction with a signed integer. Computes self - rhs, returning None if overflow occurred.

Examples

assert_eq!(1u8.checked_sub_signed(2), None);
assert_eq!(1u8.checked_sub_signed(-2), Some(3));
assert_eq!((u8::MAX - 2).checked_sub_signed(-4), None);

pub const fn strict_sub_signed(self, rhs: i8) -> Self

Available on non-crate feature ferrocene_certified only.

Strict subtraction with a signed integer. Computes self - rhs, panicking if overflow occurred.

Panics

Overflow behavior

This function will always panic on overflow, regardless of whether overflow checks are enabled.

Examples

assert_eq!(3u8.strict_sub_signed(2), 1);

The following panic because of overflow:

let _ = 1u8.strict_sub_signed(2);

let _ = (u8::MAX).strict_sub_signed(-1);

pub const fn checked_signed_diff(self, rhs: Self) -> Option<i8>

Available on non-crate feature ferrocene_certified only.

Checked integer subtraction. Computes self - rhs and checks if the result fits into an i8, returning None if overflow occurred.

Examples

assert_eq!(10u8.checked_signed_diff(2), Some(8));
assert_eq!(2u8.checked_signed_diff(10), Some(-8));
assert_eq!(u8::MAX.checked_signed_diff(i8::MAX as u8), None);
assert_eq!((i8::MAX as u8).checked_signed_diff(u8::MAX), Some(i8::MIN));
assert_eq!((i8::MAX as u8 + 1).checked_signed_diff(0), None);
assert_eq!(u8::MAX.checked_signed_diff(u8::MAX), Some(0));

pub const fn checked_mul(self, rhs: Self) -> Option<Self>

Available on non-crate feature ferrocene_certified only.

Checked integer multiplication. Computes self * rhs, returning None if overflow occurred.

Examples

assert_eq!(5u8.checked_mul(1), Some(5));
assert_eq!(u8::MAX.checked_mul(2), None);

pub const fn strict_mul(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Strict integer multiplication. Computes self * rhs, panicking if overflow occurred.

Panics

Overflow behavior

This function will always panic on overflow, regardless of whether overflow checks are enabled.

Examples

assert_eq!(5u8.strict_mul(1), 5);

The following panics because of overflow:

let _ = u8::MAX.strict_mul(2);

pub const unsafe fn unchecked_mul(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Unchecked integer multiplication. Computes self * rhs, assuming overflow cannot occur.

Calling x.unchecked_mul(y) is semantically equivalent to calling x.checked_mul(y).unwrap_unchecked().

If you’re just trying to avoid the panic in debug mode, then do not use this. Instead, you’re looking for wrapping_mul.

Safety

This results in undefined behavior when self * rhs > u8::MAX or self * rhs < u8::MIN, i.e. when checked_mul would return None.

pub const fn checked_div(self, rhs: Self) -> Option<Self>

Available on non-crate feature ferrocene_certified only.

Checked integer division. Computes self / rhs, returning None if rhs == 0.

Examples

assert_eq!(128u8.checked_div(2), Some(64));
assert_eq!(1u8.checked_div(0), None);

pub const fn strict_div(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Strict integer division. Computes self / rhs.

Strict division on unsigned types is just normal division. There’s no way overflow could ever happen. This function exists so that all operations are accounted for in the strict operations.

Panics

This function will panic if rhs is zero.

Examples

assert_eq!(100u8.strict_div(10), 10);

The following panics because of division by zero:

let _ = (1u8).strict_div(0);

pub const fn checked_div_euclid(self, rhs: Self) -> Option<Self>

Available on non-crate feature ferrocene_certified only.

Checked Euclidean division. Computes self.div_euclid(rhs), returning None if rhs == 0.

Examples

assert_eq!(128u8.checked_div_euclid(2), Some(64));
assert_eq!(1u8.checked_div_euclid(0), None);

pub const fn strict_div_euclid(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Strict Euclidean division. Computes self.div_euclid(rhs).

Strict division on unsigned types is just normal division. There’s no way overflow could ever happen. This function exists so that all operations are accounted for in the strict operations. Since, for the positive integers, all common definitions of division are equal, this is exactly equal to self.strict_div(rhs).

Panics

This function will panic if rhs is zero.

Examples

assert_eq!(100u8.strict_div_euclid(10), 10);

The following panics because of division by zero:

let _ = (1u8).strict_div_euclid(0);

pub const fn checked_exact_div(self, rhs: Self) -> Option<Self>

🔬This is a nightly-only experimental API. (exact_div #139911)

Available on non-crate feature ferrocene_certified only.

Checked integer division without remainder. Computes self / rhs, returning None if rhs == 0 or if self % rhs != 0.

Examples

#![feature(exact_div)]
assert_eq!(64u8.checked_exact_div(2), Some(32));
assert_eq!(64u8.checked_exact_div(32), Some(2));
assert_eq!(64u8.checked_exact_div(0), None);
assert_eq!(65u8.checked_exact_div(2), None);

pub const fn exact_div(self, rhs: Self) -> Self

🔬This is a nightly-only experimental API. (exact_div #139911)

Available on non-crate feature ferrocene_certified only.

Checked integer division without remainder. Computes self / rhs.

Panics

This function will panic if rhs == 0 or self % rhs != 0.

Examples

#![feature(exact_div)]
assert_eq!(64u8.exact_div(2), 32);
assert_eq!(64u8.exact_div(32), 2);

#![feature(exact_div)]
let _ = 65u8.exact_div(2);

pub const unsafe fn unchecked_exact_div(self, rhs: Self) -> Self

🔬This is a nightly-only experimental API. (exact_div #139911)

Available on non-crate feature ferrocene_certified only.

Unchecked integer division without remainder. Computes self / rhs.

Safety

This results in undefined behavior when rhs == 0 or self % rhs != 0, i.e. when checked_exact_div would return None.

pub const fn checked_rem(self, rhs: Self) -> Option<Self>

Available on non-crate feature ferrocene_certified only.

Checked integer remainder. Computes self % rhs, returning None if rhs == 0.

Examples

assert_eq!(5u8.checked_rem(2), Some(1));
assert_eq!(5u8.checked_rem(0), None);

pub const fn strict_rem(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Strict integer remainder. Computes self % rhs.

Strict remainder calculation on unsigned types is just the regular remainder calculation. There’s no way overflow could ever happen. This function exists so that all operations are accounted for in the strict operations.

Panics

This function will panic if rhs is zero.

Examples

assert_eq!(100u8.strict_rem(10), 0);

The following panics because of division by zero:

let _ = 5u8.strict_rem(0);

pub const fn checked_rem_euclid(self, rhs: Self) -> Option<Self>

Available on non-crate feature ferrocene_certified only.

Checked Euclidean modulo. Computes self.rem_euclid(rhs), returning None if rhs == 0.

Examples

assert_eq!(5u8.checked_rem_euclid(2), Some(1));
assert_eq!(5u8.checked_rem_euclid(0), None);

pub const fn strict_rem_euclid(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Strict Euclidean modulo. Computes self.rem_euclid(rhs).

Strict modulo calculation on unsigned types is just the regular remainder calculation. There’s no way overflow could ever happen. This function exists so that all operations are accounted for in the strict operations. Since, for the positive integers, all common definitions of division are equal, this is exactly equal to self.strict_rem(rhs).

Panics

This function will panic if rhs is zero.

Examples

assert_eq!(100u8.strict_rem_euclid(10), 0);

The following panics because of division by zero:

let _ = 5u8.strict_rem_euclid(0);

pub const unsafe fn unchecked_disjoint_bitor(self, other: Self) -> Self

🔬This is a nightly-only experimental API. (disjoint_bitor #135758)

Available on non-crate feature ferrocene_certified only.

Same value as self | other, but UB if any bit position is set in both inputs.

This is a situational micro-optimization for places where you’d rather use addition on some platforms and bitwise or on other platforms, based on exactly which instructions combine better with whatever else you’re doing. Note that there’s no reason to bother using this for places where it’s clear from the operations involved that they can’t overlap. For example, if you’re combining u16s into a u32 with ((a as u32) << 16) | (b as u32), that’s fine, as the backend will know those sides of the | are disjoint without needing help.

Examples

#![feature(disjoint_bitor)]

// SAFETY: `1` and `4` have no bits in common.
unsafe {
    assert_eq!(1_u8.unchecked_disjoint_bitor(4), 5);
}

Safety

Requires that (self & other) == 0, otherwise it’s immediate UB.

Equivalently, requires that (self | other) == (self + other).

pub const fn ilog(self, base: Self) -> u32

Available on non-crate feature ferrocene_certified only.

Returns the logarithm of the number with respect to an arbitrary base, rounded down.

This method might not be optimized owing to implementation details; ilog2 can produce results more efficiently for base 2, and ilog10 can produce results more efficiently for base 10.

Panics

This function will panic if self is zero, or if base is less than 2.

Examples

assert_eq!(5u8.ilog(5), 1);

pub const fn ilog2(self) -> u32

Available on non-crate feature ferrocene_certified only.

Returns the base 2 logarithm of the number, rounded down.

Panics

This function will panic if self is zero.

Examples

assert_eq!(2u8.ilog2(), 1);

pub const fn ilog10(self) -> u32

Available on non-crate feature ferrocene_certified only.

Returns the base 10 logarithm of the number, rounded down.

Panics

This function will panic if self is zero.

Example

assert_eq!(10u8.ilog10(), 1);

pub const fn checked_ilog(self, base: Self) -> Option<u32>

Available on non-crate feature ferrocene_certified only.

Returns the logarithm of the number with respect to an arbitrary base, rounded down.

Returns None if the number is zero, or if the base is not at least 2.

This method might not be optimized owing to implementation details; checked_ilog2 can produce results more efficiently for base 2, and checked_ilog10 can produce results more efficiently for base 10.

Examples

assert_eq!(5u8.checked_ilog(5), Some(1));

pub const fn checked_ilog2(self) -> Option<u32>

Available on non-crate feature ferrocene_certified only.

Returns the base 2 logarithm of the number, rounded down.

Returns None if the number is zero.

Examples

assert_eq!(2u8.checked_ilog2(), Some(1));

pub const fn checked_ilog10(self) -> Option<u32>

Available on non-crate feature ferrocene_certified only.

Returns the base 10 logarithm of the number, rounded down.

Returns None if the number is zero.

Examples

assert_eq!(10u8.checked_ilog10(), Some(1));

pub const fn checked_neg(self) -> Option<Self>

Available on non-crate feature ferrocene_certified only.

Checked negation. Computes -self, returning None unless self == 0.

Note that negating any positive integer will overflow.

Examples

assert_eq!(0u8.checked_neg(), Some(0));
assert_eq!(1u8.checked_neg(), None);

pub const fn strict_neg(self) -> Self

Available on non-crate feature ferrocene_certified only.

Strict negation. Computes -self, panicking unless self == 0.

Note that negating any positive integer will overflow.

Panics

Overflow behavior

This function will always panic on overflow, regardless of whether overflow checks are enabled.

Examples

assert_eq!(0u8.strict_neg(), 0);

The following panics because of overflow:

let _ = 1u8.strict_neg();

pub const fn checked_shl(self, rhs: u32) -> Option<Self>

Available on non-crate feature ferrocene_certified only.

Checked shift left. Computes self << rhs, returning None if rhs is larger than or equal to the number of bits in self.

Examples

assert_eq!(0x1u8.checked_shl(4), Some(0x10));
assert_eq!(0x10u8.checked_shl(129), None);
assert_eq!(0x10u8.checked_shl(7), Some(0));

pub const fn strict_shl(self, rhs: u32) -> Self

Available on non-crate feature ferrocene_certified only.

Strict shift left. Computes self << rhs, panicking if rhs is larger than or equal to the number of bits in self.

Panics

Overflow behavior

This function will always panic on overflow, regardless of whether overflow checks are enabled.

Examples

assert_eq!(0x1u8.strict_shl(4), 0x10);

The following panics because of overflow:

let _ = 0x10u8.strict_shl(129);

pub const unsafe fn unchecked_shl(self, rhs: u32) -> Self

🔬This is a nightly-only experimental API. (unchecked_shifts #85122)

Available on non-crate feature ferrocene_certified only.

Unchecked shift left. Computes self << rhs, assuming that rhs is less than the number of bits in self.

Safety

This results in undefined behavior if rhs is larger than or equal to the number of bits in self, i.e. when checked_shl would return None.

pub const fn unbounded_shl(self, rhs: u32) -> u8

Available on non-crate feature ferrocene_certified only.

Unbounded shift left. Computes self << rhs, without bounding the value of rhs.

If rhs is larger or equal to the number of bits in self, the entire value is shifted out, and 0 is returned.

Examples

assert_eq!(0x1u8.unbounded_shl(4), 0x10);
assert_eq!(0x1u8.unbounded_shl(129), 0);

pub const fn exact_shl(self, rhs: u32) -> Option<u8>

🔬This is a nightly-only experimental API. (exact_bitshifts #144336)

Available on non-crate feature ferrocene_certified only.

Exact shift left. Computes self << rhs as long as it can be reversed losslessly.

Returns None if any non-zero bits would be shifted out or if rhs >= u8::BITS. Otherwise, returns Some(self << rhs).

Examples

#![feature(exact_bitshifts)]

assert_eq!(0x1u8.exact_shl(4), Some(0x10));
assert_eq!(0x1u8.exact_shl(129), None);

pub const unsafe fn unchecked_exact_shl(self, rhs: u32) -> u8

🔬This is a nightly-only experimental API. (exact_bitshifts #144336)

Available on non-crate feature ferrocene_certified only.

Unchecked exact shift left. Computes self << rhs, assuming the operation can be losslessly reversed rhs cannot be larger than u8::BITS.

Safety

This results in undefined behavior when rhs > self.leading_zeros() || rhs >= u8::BITS i.e. when u8::exact_shl would return None.

pub const fn checked_shr(self, rhs: u32) -> Option<Self>

Available on non-crate feature ferrocene_certified only.

Checked shift right. Computes self >> rhs, returning None if rhs is larger than or equal to the number of bits in self.

Examples

assert_eq!(0x10u8.checked_shr(4), Some(0x1));
assert_eq!(0x10u8.checked_shr(129), None);

pub const fn strict_shr(self, rhs: u32) -> Self

Available on non-crate feature ferrocene_certified only.

Strict shift right. Computes self >> rhs, panicking rhs is larger than or equal to the number of bits in self.

Panics

Overflow behavior

This function will always panic on overflow, regardless of whether overflow checks are enabled.

Examples

assert_eq!(0x10u8.strict_shr(4), 0x1);

The following panics because of overflow:

let _ = 0x10u8.strict_shr(129);

pub const unsafe fn unchecked_shr(self, rhs: u32) -> Self

🔬This is a nightly-only experimental API. (unchecked_shifts #85122)

Available on non-crate feature ferrocene_certified only.

Unchecked shift right. Computes self >> rhs, assuming that rhs is less than the number of bits in self.

Safety

This results in undefined behavior if rhs is larger than or equal to the number of bits in self, i.e. when checked_shr would return None.

pub const fn unbounded_shr(self, rhs: u32) -> u8

Available on non-crate feature ferrocene_certified only.

Unbounded shift right. Computes self >> rhs, without bounding the value of rhs.

If rhs is larger or equal to the number of bits in self, the entire value is shifted out, and 0 is returned.

Examples

assert_eq!(0x10u8.unbounded_shr(4), 0x1);
assert_eq!(0x10u8.unbounded_shr(129), 0);

pub const fn exact_shr(self, rhs: u32) -> Option<u8>

🔬This is a nightly-only experimental API. (exact_bitshifts #144336)

Available on non-crate feature ferrocene_certified only.

Exact shift right. Computes self >> rhs as long as it can be reversed losslessly.

Returns None if any non-zero bits would be shifted out or if rhs >= u8::BITS. Otherwise, returns Some(self >> rhs).

Examples

#![feature(exact_bitshifts)]

assert_eq!(0x10u8.exact_shr(4), Some(0x1));
assert_eq!(0x10u8.exact_shr(5), None);

pub const unsafe fn unchecked_exact_shr(self, rhs: u32) -> u8

🔬This is a nightly-only experimental API. (exact_bitshifts #144336)

Available on non-crate feature ferrocene_certified only.

Unchecked exact shift right. Computes self >> rhs, assuming the operation can be losslessly reversed and rhs cannot be larger than u8::BITS.

Safety

This results in undefined behavior when rhs > self.trailing_zeros() || rhs >= u8::BITS i.e. when u8::exact_shr would return None.

pub const fn checked_pow(self, exp: u32) -> Option<Self>

Available on non-crate feature ferrocene_certified only.

Checked exponentiation. Computes self.pow(exp), returning None if overflow occurred.

Examples

assert_eq!(2u8.checked_pow(5), Some(32));
assert_eq!(u8::MAX.checked_pow(2), None);

pub const fn strict_pow(self, exp: u32) -> Self

Available on non-crate feature ferrocene_certified only.

Strict exponentiation. Computes self.pow(exp), panicking if overflow occurred.

Panics

Overflow behavior

This function will always panic on overflow, regardless of whether overflow checks are enabled.

Examples

assert_eq!(2u8.strict_pow(5), 32);

The following panics because of overflow:

let _ = u8::MAX.strict_pow(2);

pub const fn saturating_add(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Saturating integer addition. Computes self + rhs, saturating at the numeric bounds instead of overflowing.

Examples

assert_eq!(100u8.saturating_add(1), 101);
assert_eq!(u8::MAX.saturating_add(127), u8::MAX);

pub const fn saturating_add_signed(self, rhs: i8) -> Self

Available on non-crate feature ferrocene_certified only.

Saturating addition with a signed integer. Computes self + rhs, saturating at the numeric bounds instead of overflowing.

Examples

assert_eq!(1u8.saturating_add_signed(2), 3);
assert_eq!(1u8.saturating_add_signed(-2), 0);
assert_eq!((u8::MAX - 2).saturating_add_signed(4), u8::MAX);

pub const fn saturating_sub(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Saturating integer subtraction. Computes self - rhs, saturating at the numeric bounds instead of overflowing.

Examples

assert_eq!(100u8.saturating_sub(27), 73);
assert_eq!(13u8.saturating_sub(127), 0);

pub const fn saturating_sub_signed(self, rhs: i8) -> Self

Available on non-crate feature ferrocene_certified only.

Saturating integer subtraction. Computes self - rhs, saturating at the numeric bounds instead of overflowing.

Examples

assert_eq!(1u8.saturating_sub_signed(2), 0);
assert_eq!(1u8.saturating_sub_signed(-2), 3);
assert_eq!((u8::MAX - 2).saturating_sub_signed(-4), u8::MAX);

pub const fn saturating_mul(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Saturating integer multiplication. Computes self * rhs, saturating at the numeric bounds instead of overflowing.

Examples

assert_eq!(2u8.saturating_mul(10), 20);
assert_eq!((u8::MAX).saturating_mul(10), u8::MAX);

pub const fn saturating_div(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Saturating integer division. Computes self / rhs, saturating at the numeric bounds instead of overflowing.

Panics

This function will panic if rhs is zero.

Examples

assert_eq!(5u8.saturating_div(2), 2);

pub const fn saturating_pow(self, exp: u32) -> Self

Available on non-crate feature ferrocene_certified only.

Saturating integer exponentiation. Computes self.pow(exp), saturating at the numeric bounds instead of overflowing.

Examples

assert_eq!(4u8.saturating_pow(3), 64);
assert_eq!(u8::MAX.saturating_pow(2), u8::MAX);

pub const fn wrapping_add(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Wrapping (modular) addition. Computes self + rhs, wrapping around at the boundary of the type.

Examples

assert_eq!(200u8.wrapping_add(55), 255);
assert_eq!(200u8.wrapping_add(u8::MAX), 199);

pub const fn wrapping_add_signed(self, rhs: i8) -> Self

Available on non-crate feature ferrocene_certified only.

Wrapping (modular) addition with a signed integer. Computes self + rhs, wrapping around at the boundary of the type.

Examples

assert_eq!(1u8.wrapping_add_signed(2), 3);
assert_eq!(1u8.wrapping_add_signed(-2), u8::MAX);
assert_eq!((u8::MAX - 2).wrapping_add_signed(4), 1);

pub const fn wrapping_sub(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Wrapping (modular) subtraction. Computes self - rhs, wrapping around at the boundary of the type.

Examples

assert_eq!(100u8.wrapping_sub(100), 0);
assert_eq!(100u8.wrapping_sub(u8::MAX), 101);

pub const fn wrapping_sub_signed(self, rhs: i8) -> Self

Available on non-crate feature ferrocene_certified only.

Wrapping (modular) subtraction with a signed integer. Computes self - rhs, wrapping around at the boundary of the type.

Examples

assert_eq!(1u8.wrapping_sub_signed(2), u8::MAX);
assert_eq!(1u8.wrapping_sub_signed(-2), 3);
assert_eq!((u8::MAX - 2).wrapping_sub_signed(-4), 1);

pub const fn wrapping_mul(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Wrapping (modular) multiplication. Computes self * rhs, wrapping around at the boundary of the type.

Examples

Please note that this example is shared among integer types, which is why u8 is used.

assert_eq!(10u8.wrapping_mul(12), 120);
assert_eq!(25u8.wrapping_mul(12), 44);

pub const fn wrapping_div(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Wrapping (modular) division. Computes self / rhs.

Wrapped division on unsigned types is just normal division. There’s no way wrapping could ever happen. This function exists so that all operations are accounted for in the wrapping operations.

Panics

This function will panic if rhs is zero.

Examples

assert_eq!(100u8.wrapping_div(10), 10);

pub const fn wrapping_div_euclid(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Wrapping Euclidean division. Computes self.div_euclid(rhs).

Wrapped division on unsigned types is just normal division. There’s no way wrapping could ever happen. This function exists so that all operations are accounted for in the wrapping operations. Since, for the positive integers, all common definitions of division are equal, this is exactly equal to self.wrapping_div(rhs).

Panics

This function will panic if rhs is zero.

Examples

assert_eq!(100u8.wrapping_div_euclid(10), 10);

pub const fn wrapping_rem(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Wrapping (modular) remainder. Computes self % rhs.

Wrapped remainder calculation on unsigned types is just the regular remainder calculation. There’s no way wrapping could ever happen. This function exists so that all operations are accounted for in the wrapping operations.

Panics

This function will panic if rhs is zero.

Examples

assert_eq!(100u8.wrapping_rem(10), 0);

pub const fn wrapping_rem_euclid(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Wrapping Euclidean modulo. Computes self.rem_euclid(rhs).

Wrapped modulo calculation on unsigned types is just the regular remainder calculation. There’s no way wrapping could ever happen. This function exists so that all operations are accounted for in the wrapping operations. Since, for the positive integers, all common definitions of division are equal, this is exactly equal to self.wrapping_rem(rhs).

Panics

This function will panic if rhs is zero.

Examples

assert_eq!(100u8.wrapping_rem_euclid(10), 0);

pub const fn wrapping_neg(self) -> Self

Available on non-crate feature ferrocene_certified only.

Wrapping (modular) negation. Computes -self, wrapping around at the boundary of the type.

Since unsigned types do not have negative equivalents all applications of this function will wrap (except for -0). For values smaller than the corresponding signed type’s maximum the result is the same as casting the corresponding signed value. Any larger values are equivalent to MAX + 1 - (val - MAX - 1) where MAX is the corresponding signed type’s maximum.

Examples

assert_eq!(0_u8.wrapping_neg(), 0);
assert_eq!(u8::MAX.wrapping_neg(), 1);
assert_eq!(13_u8.wrapping_neg(), (!13) + 1);
assert_eq!(42_u8.wrapping_neg(), !(42 - 1));

pub const fn wrapping_shl(self, rhs: u32) -> Self

Available on non-crate feature ferrocene_certified only.

Panic-free bitwise shift-left; yields self << mask(rhs), where mask removes any high-order bits of rhs that would cause the shift to exceed the bitwidth of the type.

Note that this is not the same as a rotate-left; the RHS of a wrapping shift-left is restricted to the range of the type, rather than the bits shifted out of the LHS being returned to the other end. The primitive integer types all implement a rotate_left function, which may be what you want instead.

Examples

assert_eq!(1u8.wrapping_shl(7), 128);
assert_eq!(1u8.wrapping_shl(128), 1);

pub const fn wrapping_shr(self, rhs: u32) -> Self

Available on non-crate feature ferrocene_certified only.

Panic-free bitwise shift-right; yields self >> mask(rhs), where mask removes any high-order bits of rhs that would cause the shift to exceed the bitwidth of the type.

Note that this is not the same as a rotate-right; the RHS of a wrapping shift-right is restricted to the range of the type, rather than the bits shifted out of the LHS being returned to the other end. The primitive integer types all implement a rotate_right function, which may be what you want instead.

Examples

assert_eq!(128u8.wrapping_shr(7), 1);
assert_eq!(128u8.wrapping_shr(128), 128);

pub const fn wrapping_pow(self, exp: u32) -> Self

Available on non-crate feature ferrocene_certified only.

Wrapping (modular) exponentiation. Computes self.pow(exp), wrapping around at the boundary of the type.

Examples

assert_eq!(3u8.wrapping_pow(5), 243);
assert_eq!(3u8.wrapping_pow(6), 217);

pub const fn overflowing_add(self, rhs: Self) -> (Self, bool)

Available on non-crate feature ferrocene_certified only.

Calculates self + rhs.

Returns a tuple of the addition along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then the wrapped value is returned.

Examples

assert_eq!(5u8.overflowing_add(2), (7, false));
assert_eq!(u8::MAX.overflowing_add(1), (0, true));

pub fn carrying_add(self, rhs: Self, carry: bool) -> (Self, bool)

Available on non-crate feature ferrocene_certified only.

Calculates self + rhs + carry and returns a tuple containing the sum and the output carry (in that order).

Performs “ternary addition” of two integer operands and a carry-in bit, and returns an output integer and a carry-out bit. This allows chaining together multiple additions to create a wider addition, and can be useful for bignum addition.

This can be thought of as a 8-bit “full adder”, in the electronics sense.

If the input carry is false, this method is equivalent to overflowing_add, and the output carry is equal to the overflow flag. Note that although carry and overflow flags are similar for unsigned integers, they are different for signed integers.

Examples

//    3  MAX    (a = 3 × 2^8 + 2^8 - 1)
// +  5    7    (b = 5 × 2^8 + 7)
// ---------
//    9    6    (sum = 9 × 2^8 + 6)

let (a1, a0): (u8, u8) = (3, u8::MAX);
let (b1, b0): (u8, u8) = (5, 7);
let carry0 = false;

let (sum0, carry1) = a0.carrying_add(b0, carry0);
assert_eq!(carry1, true);
let (sum1, carry2) = a1.carrying_add(b1, carry1);
assert_eq!(carry2, false);

assert_eq!((sum1, sum0), (9, 6));

pub const fn overflowing_add_signed(self, rhs: i8) -> (Self, bool)

Available on non-crate feature ferrocene_certified only.

Calculates self + rhs with a signed rhs.

Returns a tuple of the addition along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then the wrapped value is returned.

Examples

assert_eq!(1u8.overflowing_add_signed(2), (3, false));
assert_eq!(1u8.overflowing_add_signed(-2), (u8::MAX, true));
assert_eq!((u8::MAX - 2).overflowing_add_signed(4), (1, true));

pub const fn overflowing_sub(self, rhs: Self) -> (Self, bool)

Available on non-crate feature ferrocene_certified only.

Calculates self - rhs.

Returns a tuple of the subtraction along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then the wrapped value is returned.

Examples

assert_eq!(5u8.overflowing_sub(2), (3, false));
assert_eq!(0u8.overflowing_sub(1), (u8::MAX, true));

pub fn borrowing_sub(self, rhs: Self, borrow: bool) -> (Self, bool)

Available on non-crate feature ferrocene_certified only.

Calculates self − rhs − borrow and returns a tuple containing the difference and the output borrow.

Performs “ternary subtraction” by subtracting both an integer operand and a borrow-in bit from self, and returns an output integer and a borrow-out bit. This allows chaining together multiple subtractions to create a wider subtraction, and can be useful for bignum subtraction.

Examples

//    9    6    (a = 9 × 2^8 + 6)
// -  5    7    (b = 5 × 2^8 + 7)
// ---------
//    3  MAX    (diff = 3 × 2^8 + 2^8 - 1)

let (a1, a0): (u8, u8) = (9, 6);
let (b1, b0): (u8, u8) = (5, 7);
let borrow0 = false;

let (diff0, borrow1) = a0.borrowing_sub(b0, borrow0);
assert_eq!(borrow1, true);
let (diff1, borrow2) = a1.borrowing_sub(b1, borrow1);
assert_eq!(borrow2, false);

assert_eq!((diff1, diff0), (3, u8::MAX));

pub const fn overflowing_sub_signed(self, rhs: i8) -> (Self, bool)

Available on non-crate feature ferrocene_certified only.

Calculates self - rhs with a signed rhs

Returns a tuple of the subtraction along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then the wrapped value is returned.

Examples

assert_eq!(1u8.overflowing_sub_signed(2), (u8::MAX, true));
assert_eq!(1u8.overflowing_sub_signed(-2), (3, false));
assert_eq!((u8::MAX - 2).overflowing_sub_signed(-4), (1, true));

pub const fn abs_diff(self, other: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Computes the absolute difference between self and other.

Examples

assert_eq!(100u8.abs_diff(80), 20u8);
assert_eq!(100u8.abs_diff(110), 10u8);

pub const fn overflowing_mul(self, rhs: Self) -> (Self, bool)

Available on non-crate feature ferrocene_certified only.

Calculates the multiplication of self and rhs.

Returns a tuple of the multiplication along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then the wrapped value is returned.

If you want the value of the overflow, rather than just whether an overflow occurred, see Self::carrying_mul.

Examples

Please note that this example is shared among integer types, which is why u32 is used.

assert_eq!(5u32.overflowing_mul(2), (10, false));
assert_eq!(1_000_000_000u32.overflowing_mul(10), (1410065408, true));

pub const fn widening_mul(self, rhs: Self) -> (Self, Self)

🔬This is a nightly-only experimental API. (bigint_helper_methods #85532)

Available on non-crate feature ferrocene_certified only.

Calculates the complete double-width product self * rhs.

This returns the low-order (wrapping) bits and the high-order (overflow) bits of the result as two separate values, in that order. As such, a.widening_mul(b).0 produces the same result as a.wrapping_mul(b).

If you also need to add a value and carry to the wide result, then you want Self::carrying_mul_add instead.

If you also need to add a carry to the wide result, then you want Self::carrying_mul instead.

If you just want to know whether the multiplication overflowed, then you want Self::overflowing_mul instead.

Examples

#![feature(bigint_helper_methods)]
assert_eq!(5_u8.widening_mul(7), (35, 0));
assert_eq!(u8::MAX.widening_mul(u8::MAX), (1, u8::MAX - 1));

Compared to other *_mul methods:

#![feature(bigint_helper_methods)]
assert_eq!(u8::widening_mul(1 << 7, 6), (0, 3));
assert_eq!(u8::overflowing_mul(1 << 7, 6), (0, true));
assert_eq!(u8::wrapping_mul(1 << 7, 6), 0);
assert_eq!(u8::checked_mul(1 << 7, 6), None);

Please note that this example is shared among integer types, which is why u32 is used.

#![feature(bigint_helper_methods)]
assert_eq!(5u32.widening_mul(2), (10, 0));
assert_eq!(1_000_000_000u32.widening_mul(10), (1410065408, 2));

pub fn carrying_mul(self, rhs: Self, carry: Self) -> (Self, Self)

Available on non-crate feature ferrocene_certified only.

Calculates the “full multiplication” self * rhs + carry without the possibility to overflow.

This returns the low-order (wrapping) bits and the high-order (overflow) bits of the result as two separate values, in that order.

Performs “long multiplication” which takes in an extra amount to add, and may return an additional amount of overflow. This allows for chaining together multiple multiplications to create “big integers” which represent larger values.

If you also need to add a value, then use Self::carrying_mul_add.

Examples

Please note that this example is shared among integer types, which is why u32 is used.

assert_eq!(5u32.carrying_mul(2, 0), (10, 0));
assert_eq!(5u32.carrying_mul(2, 10), (20, 0));
assert_eq!(1_000_000_000u32.carrying_mul(10, 0), (1410065408, 2));
assert_eq!(1_000_000_000u32.carrying_mul(10, 10), (1410065418, 2));
assert_eq!(u8::MAX.carrying_mul(u8::MAX, u8::MAX), (0, u8::MAX));

This is the core operation needed for scalar multiplication when implementing it for wider-than-native types.

#![feature(bigint_helper_methods)]
fn scalar_mul_eq(little_endian_digits: &mut Vec<u16>, multiplicand: u16) {
    let mut carry = 0;
    for d in little_endian_digits.iter_mut() {
        (*d, carry) = d.carrying_mul(multiplicand, carry);
    }
    if carry != 0 {
        little_endian_digits.push(carry);
    }
}

let mut v = vec![10, 20];
scalar_mul_eq(&mut v, 3);
assert_eq!(v, [30, 60]);

assert_eq!(0x87654321_u64 * 0xFEED, 0x86D3D159E38D);
let mut v = vec![0x4321, 0x8765];
scalar_mul_eq(&mut v, 0xFEED);
assert_eq!(v, [0xE38D, 0xD159, 0x86D3]);

If carry is zero, this is similar to overflowing_mul, except that it gives the value of the overflow instead of just whether one happened:

#![feature(bigint_helper_methods)]
let r = u8::carrying_mul(7, 13, 0);
assert_eq!((r.0, r.1 != 0), u8::overflowing_mul(7, 13));
let r = u8::carrying_mul(13, 42, 0);
assert_eq!((r.0, r.1 != 0), u8::overflowing_mul(13, 42));

The value of the first field in the returned tuple matches what you’d get by combining the wrapping_mul and wrapping_add methods:

#![feature(bigint_helper_methods)]
assert_eq!(
    789_u16.carrying_mul(456, 123).0,
    789_u16.wrapping_mul(456).wrapping_add(123),
);

pub fn carrying_mul_add(self, rhs: Self, carry: Self, add: Self) -> (Self, Self)

Available on non-crate feature ferrocene_certified only.

Calculates the “full multiplication” self * rhs + carry1 + carry2.

This returns the low-order (wrapping) bits and the high-order (overflow) bits of the result as two separate values, in that order.

This cannot overflow, as the double-width result has exactly enough space for the largest possible result. This is equivalent to how, in decimal, 9 × 9 + 9 + 9 = 81 + 18 = 99 = 9×10⁰ + 9×10¹ = 10² - 1.

Performs “long multiplication” which takes in an extra amount to add, and may return an additional amount of overflow. This allows for chaining together multiple multiplications to create “big integers” which represent larger values.

If you don’t need the add part, then you can use Self::carrying_mul instead.

Examples

Please note that this example is shared between integer types, which explains why u32 is used here.

assert_eq!(5u32.carrying_mul_add(2, 0, 0), (10, 0));
assert_eq!(5u32.carrying_mul_add(2, 10, 10), (30, 0));
assert_eq!(1_000_000_000u32.carrying_mul_add(10, 0, 0), (1410065408, 2));
assert_eq!(1_000_000_000u32.carrying_mul_add(10, 10, 10), (1410065428, 2));
assert_eq!(u8::MAX.carrying_mul_add(u8::MAX, u8::MAX, u8::MAX), (u8::MAX, u8::MAX));

This is the core per-digit operation for “grade school” O(n²) multiplication.

Please note that this example is shared between integer types, using u8 for simplicity of the demonstration.

fn quadratic_mul<const N: usize>(a: [u8; N], b: [u8; N]) -> [u8; N] {
    let mut out = [0; N];
    for j in 0..N {
        let mut carry = 0;
        for i in 0..(N - j) {
            (out[j + i], carry) = u8::carrying_mul_add(a[i], b[j], out[j + i], carry);
        }
    }
    out
}

// -1 * -1 == 1
assert_eq!(quadratic_mul([0xFF; 3], [0xFF; 3]), [1, 0, 0]);

assert_eq!(u32::wrapping_mul(0x9e3779b9, 0x7f4a7c15), 0xcffc982d);
assert_eq!(
    quadratic_mul(u32::to_le_bytes(0x9e3779b9), u32::to_le_bytes(0x7f4a7c15)),
    u32::to_le_bytes(0xcffc982d)
);

pub const fn overflowing_div(self, rhs: Self) -> (Self, bool)

Available on non-crate feature ferrocene_certified only.

Calculates the divisor when self is divided by rhs.

Returns a tuple of the divisor along with a boolean indicating whether an arithmetic overflow would occur. Note that for unsigned integers overflow never occurs, so the second value is always false.

Panics

This function will panic if rhs is zero.

Examples

assert_eq!(5u8.overflowing_div(2), (2, false));

pub const fn overflowing_div_euclid(self, rhs: Self) -> (Self, bool)

Available on non-crate feature ferrocene_certified only.

Calculates the quotient of Euclidean division self.div_euclid(rhs).

Returns a tuple of the divisor along with a boolean indicating whether an arithmetic overflow would occur. Note that for unsigned integers overflow never occurs, so the second value is always false. Since, for the positive integers, all common definitions of division are equal, this is exactly equal to self.overflowing_div(rhs).

Panics

This function will panic if rhs is zero.

Examples

assert_eq!(5u8.overflowing_div_euclid(2), (2, false));

pub const fn overflowing_rem(self, rhs: Self) -> (Self, bool)

Available on non-crate feature ferrocene_certified only.

Calculates the remainder when self is divided by rhs.

Returns a tuple of the remainder after dividing along with a boolean indicating whether an arithmetic overflow would occur. Note that for unsigned integers overflow never occurs, so the second value is always false.

Panics

This function will panic if rhs is zero.

Examples

assert_eq!(5u8.overflowing_rem(2), (1, false));

pub const fn overflowing_rem_euclid(self, rhs: Self) -> (Self, bool)

Available on non-crate feature ferrocene_certified only.

Calculates the remainder self.rem_euclid(rhs) as if by Euclidean division.

Returns a tuple of the modulo after dividing along with a boolean indicating whether an arithmetic overflow would occur. Note that for unsigned integers overflow never occurs, so the second value is always false. Since, for the positive integers, all common definitions of division are equal, this operation is exactly equal to self.overflowing_rem(rhs).

Panics

This function will panic if rhs is zero.

Examples

assert_eq!(5u8.overflowing_rem_euclid(2), (1, false));

pub const fn overflowing_neg(self) -> (Self, bool)

Available on non-crate feature ferrocene_certified only.

Negates self in an overflowing fashion.

Returns !self + 1 using wrapping operations to return the value that represents the negation of this unsigned value. Note that for positive unsigned values overflow always occurs, but negating 0 does not overflow.

Examples

assert_eq!(0u8.overflowing_neg(), (0, false));
assert_eq!(2u8.overflowing_neg(), (-2i32 as u8, true));

pub const fn overflowing_shl(self, rhs: u32) -> (Self, bool)

Available on non-crate feature ferrocene_certified only.

Shifts self left by rhs bits.

Returns a tuple of the shifted version of self along with a boolean indicating whether the shift value was larger than or equal to the number of bits. If the shift value is too large, then value is masked (N-1) where N is the number of bits, and this value is then used to perform the shift.

Examples

assert_eq!(0x1u8.overflowing_shl(4), (0x10, false));
assert_eq!(0x1u8.overflowing_shl(132), (0x10, true));
assert_eq!(0x10u8.overflowing_shl(7), (0, false));

pub const fn overflowing_shr(self, rhs: u32) -> (Self, bool)

Available on non-crate feature ferrocene_certified only.

Shifts self right by rhs bits.

Returns a tuple of the shifted version of self along with a boolean indicating whether the shift value was larger than or equal to the number of bits. If the shift value is too large, then value is masked (N-1) where N is the number of bits, and this value is then used to perform the shift.

Examples

assert_eq!(0x10u8.overflowing_shr(4), (0x1, false));
assert_eq!(0x10u8.overflowing_shr(132), (0x1, true));

pub const fn overflowing_pow(self, exp: u32) -> (Self, bool)

Available on non-crate feature ferrocene_certified only.

Raises self to the power of exp, using exponentiation by squaring.

Returns a tuple of the exponentiation along with a bool indicating whether an overflow happened.

Examples

assert_eq!(3u8.overflowing_pow(5), (243, false));
assert_eq!(3u8.overflowing_pow(6), (217, true));

pub const fn pow(self, exp: u32) -> Self

Available on non-crate feature ferrocene_certified only.

Raises self to the power of exp, using exponentiation by squaring.

Examples

assert_eq!(2u8.pow(5), 32);

pub const fn isqrt(self) -> Self

Available on non-crate feature ferrocene_certified only.

Returns the square root of the number, rounded down.

Examples

assert_eq!(10u8.isqrt(), 3);

pub const fn div_euclid(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Performs Euclidean division.

Since, for the positive integers, all common definitions of division are equal, this is exactly equal to self / rhs.

Panics

This function will panic if rhs is zero.

Examples

assert_eq!(7u8.div_euclid(4), 1); // or any other integer type

pub const fn rem_euclid(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Calculates the least remainder of self (mod rhs).

Since, for the positive integers, all common definitions of division are equal, this is exactly equal to self % rhs.

Panics

This function will panic if rhs is zero.

Examples

assert_eq!(7u8.rem_euclid(4), 3); // or any other integer type

pub const fn div_floor(self, rhs: Self) -> Self

🔬This is a nightly-only experimental API. (int_roundings #88581)

Available on non-crate feature ferrocene_certified only.

Calculates the quotient of self and rhs, rounding the result towards negative infinity.

This is the same as performing self / rhs for all unsigned integers.

Panics

This function will panic if rhs is zero.

Examples

#![feature(int_roundings)]
assert_eq!(7_u8.div_floor(4), 1);

pub const fn div_ceil(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Calculates the quotient of self and rhs, rounding the result towards positive infinity.

Panics

This function will panic if rhs is zero.

Examples

assert_eq!(7_u8.div_ceil(4), 2);

pub const fn next_multiple_of(self, rhs: Self) -> Self

Available on non-crate feature ferrocene_certified only.

Calculates the smallest value greater than or equal to self that is a multiple of rhs.

Panics

This function will panic if rhs is zero.

Overflow behavior

On overflow, this function will panic if overflow checks are enabled (default in debug mode) and wrap if overflow checks are disabled (default in release mode).

Examples

assert_eq!(16_u8.next_multiple_of(8), 16);
assert_eq!(23_u8.next_multiple_of(8), 24);

pub const fn checked_next_multiple_of(self, rhs: Self) -> Option<Self>

Available on non-crate feature ferrocene_certified only.

Calculates the smallest value greater than or equal to self that is a multiple of rhs. Returns None if rhs is zero or the operation would result in overflow.

Examples

assert_eq!(16_u8.checked_next_multiple_of(8), Some(16));
assert_eq!(23_u8.checked_next_multiple_of(8), Some(24));
assert_eq!(1_u8.checked_next_multiple_of(0), None);
assert_eq!(u8::MAX.checked_next_multiple_of(2), None);

pub const fn is_multiple_of(self, rhs: Self) -> bool

Available on non-crate feature ferrocene_certified only.

Returns true if self is an integer multiple of rhs, and false otherwise.

This function is equivalent to self % rhs == 0, except that it will not panic for rhs == 0. Instead, 0.is_multiple_of(0) == true, and for any non-zero n, n.is_multiple_of(0) == false.

Examples

assert!(6_u8.is_multiple_of(2));
assert!(!5_u8.is_multiple_of(2));

assert!(0_u8.is_multiple_of(0));
assert!(!6_u8.is_multiple_of(0));

pub const fn is_power_of_two(self) -> bool

Returns true if and only if self == 2^k for some unsigned integer k.

Examples

assert!(16u8.is_power_of_two());
assert!(!10u8.is_power_of_two());

pub const fn next_power_of_two(self) -> Self

Available on non-crate feature ferrocene_certified only.

Returns the smallest power of two greater than or equal to self.

When return value overflows (i.e., self > (1 << (N-1)) for type uN), it panics in debug mode and the return value is wrapped to 0 in release mode (the only situation in which this method can return 0).

Examples

assert_eq!(2u8.next_power_of_two(), 2);
assert_eq!(3u8.next_power_of_two(), 4);
assert_eq!(0u8.next_power_of_two(), 1);

pub const fn checked_next_power_of_two(self) -> Option<Self>

Available on non-crate feature ferrocene_certified only.

Returns the smallest power of two greater than or equal to self. If the next power of two is greater than the type’s maximum value, None is returned, otherwise the power of two is wrapped in Some.

Examples

assert_eq!(2u8.checked_next_power_of_two(), Some(2));
assert_eq!(3u8.checked_next_power_of_two(), Some(4));
assert_eq!(u8::MAX.checked_next_power_of_two(), None);

pub const fn wrapping_next_power_of_two(self) -> Self

🔬This is a nightly-only experimental API. (wrapping_next_power_of_two #32463)

Available on non-crate feature ferrocene_certified only.

Returns the smallest power of two greater than or equal to n. If the next power of two is greater than the type’s maximum value, the return value is wrapped to 0.

Examples

#![feature(wrapping_next_power_of_two)]

assert_eq!(2u8.wrapping_next_power_of_two(), 2);
assert_eq!(3u8.wrapping_next_power_of_two(), 4);
assert_eq!(u8::MAX.wrapping_next_power_of_two(), 0);

pub const fn to_be_bytes(self) -> [u8; 1]

Available on non-crate feature ferrocene_certified only.

Returns the memory representation of this integer as a byte array in big-endian (network) byte order.

Note: This function is meaningless on u8. Byte order does not exist as a concept for byte-sized integers. This function is only provided in symmetry with larger integer types.

Examples

let bytes = 0x12u8.to_be_bytes();
assert_eq!(bytes, [0x12]);

pub const fn to_le_bytes(self) -> [u8; 1]

Available on non-crate feature ferrocene_certified only.

Returns the memory representation of this integer as a byte array in little-endian byte order.

Note: This function is meaningless on u8. Byte order does not exist as a concept for byte-sized integers. This function is only provided in symmetry with larger integer types.

Examples

let bytes = 0x12u8.to_le_bytes();
assert_eq!(bytes, [0x12]);

pub const fn to_ne_bytes(self) -> [u8; 1]

Available on non-crate feature ferrocene_certified only.

Returns the memory representation of this integer as a byte array in native byte order.

As the target platform’s native endianness is used, portable code should use to_be_bytes or to_le_bytes, as appropriate, instead.

Note: This function is meaningless on u8. Byte order does not exist as a concept for byte-sized integers. This function is only provided in symmetry with larger integer types.

Examples

let bytes = 0x12u8.to_ne_bytes();
assert_eq!(
    bytes,
    if cfg!(target_endian = "big") {
        [0x12]
    } else {
        [0x12]
    }
);

pub const fn from_be_bytes(bytes: [u8; 1]) -> Self

Available on non-crate feature ferrocene_certified only.

Creates a native endian integer value from its representation as a byte array in big endian.

Note: This function is meaningless on u8. Byte order does not exist as a concept for byte-sized integers. This function is only provided in symmetry with larger integer types.

Examples

let value = u8::from_be_bytes([0x12]);
assert_eq!(value, 0x12);

When starting from a slice rather than an array, fallible conversion APIs can be used:

fn read_be_u8(input: &mut &[u8]) -> u8 {
    let (int_bytes, rest) = input.split_at(size_of::<u8>());
    *input = rest;
    u8::from_be_bytes(int_bytes.try_into().unwrap())
}

pub const fn from_le_bytes(bytes: [u8; 1]) -> Self

Available on non-crate feature ferrocene_certified only.

Creates a native endian integer value from its representation as a byte array in little endian.

Note: This function is meaningless on u8. Byte order does not exist as a concept for byte-sized integers. This function is only provided in symmetry with larger integer types.

Examples

let value = u8::from_le_bytes([0x12]);
assert_eq!(value, 0x12);

When starting from a slice rather than an array, fallible conversion APIs can be used:

fn read_le_u8(input: &mut &[u8]) -> u8 {
    let (int_bytes, rest) = input.split_at(size_of::<u8>());
    *input = rest;
    u8::from_le_bytes(int_bytes.try_into().unwrap())
}

pub const fn from_ne_bytes(bytes: [u8; 1]) -> Self

Available on non-crate feature ferrocene_certified only.

Creates a native endian integer value from its memory representation as a byte array in native endianness.

As the target platform’s native endianness is used, portable code likely wants to use from_be_bytes or from_le_bytes, as appropriate instead.

Note: This function is meaningless on u8. Byte order does not exist as a concept for byte-sized integers. This function is only provided in symmetry with larger integer types.

Examples

let value = u8::from_ne_bytes(if cfg!(target_endian = "big") {
    [0x12]
} else {
    [0x12]
});
assert_eq!(value, 0x12);

When starting from a slice rather than an array, fallible conversion APIs can be used:

fn read_ne_u8(input: &mut &[u8]) -> u8 {
    let (int_bytes, rest) = input.split_at(size_of::<u8>());
    *input = rest;
    u8::from_ne_bytes(int_bytes.try_into().unwrap())
}

pub const fn min_value() -> Self

👎Deprecating in a future version: replaced by the MIN associated constant on this type

Available on non-crate feature ferrocene_certified only.

New code should prefer to use u8::MIN instead.

Returns the smallest value that can be represented by this integer type.

pub const fn max_value() -> Self

👎Deprecating in a future version: replaced by the MAX associated constant on this type

Available on non-crate feature ferrocene_certified only.

New code should prefer to use u8::MAX instead.

Returns the largest value that can be represented by this integer type.

pub const fn midpoint(self, rhs: u8) -> u8

Calculates the midpoint (average) between self and rhs.

midpoint(a, b) is (a + b) / 2 as if it were performed in a sufficiently-large unsigned integral type. This implies that the result is always rounded towards zero and that no overflow will ever occur.

Examples

assert_eq!(0u8.midpoint(4), 2);
assert_eq!(1u8.midpoint(4), 2);

pub const fn is_ascii(&self) -> bool

Available on non-crate feature ferrocene_certified only.

Checks if the value is within the ASCII range.

Examples

let ascii = 97u8;
let non_ascii = 150u8;

assert!(ascii.is_ascii());
assert!(!non_ascii.is_ascii());

pub const fn as_ascii(&self) -> Option<Char>

🔬This is a nightly-only experimental API. (ascii_char #110998)

Available on non-crate feature ferrocene_certified only.

If the value of this byte is within the ASCII range, returns it as an ASCII character. Otherwise, returns None.

pub const unsafe fn as_ascii_unchecked(&self) -> Char

🔬This is a nightly-only experimental API. (ascii_char #110998)

Available on non-crate feature ferrocene_certified only.

Converts this byte to an ASCII character, without checking whether or not it’s valid.

Safety

This byte must be valid ASCII, or else this is UB.

pub const fn to_ascii_uppercase(&self) -> u8

Available on non-crate feature ferrocene_certified only.

Makes a copy of the value in its ASCII upper case equivalent.

ASCII letters ‘a’ to ‘z’ are mapped to ‘A’ to ‘Z’, but non-ASCII letters are unchanged.

To uppercase the value in-place, use make_ascii_uppercase.

Examples

let lowercase_a = 97u8;

assert_eq!(65, lowercase_a.to_ascii_uppercase());

pub const fn to_ascii_lowercase(&self) -> u8

Available on non-crate feature ferrocene_certified only.

Makes a copy of the value in its ASCII lower case equivalent.

ASCII letters ‘A’ to ‘Z’ are mapped to ‘a’ to ‘z’, but non-ASCII letters are unchanged.

To lowercase the value in-place, use make_ascii_lowercase.

Examples

let uppercase_a = 65u8;

assert_eq!(97, uppercase_a.to_ascii_lowercase());

pub const fn eq_ignore_ascii_case(&self, other: &u8) -> bool

Available on non-crate feature ferrocene_certified only.

Checks that two values are an ASCII case-insensitive match.

This is equivalent to to_ascii_lowercase(a) == to_ascii_lowercase(b).

Examples

let lowercase_a = 97u8;
let uppercase_a = 65u8;

assert!(lowercase_a.eq_ignore_ascii_case(&uppercase_a));

pub const fn make_ascii_uppercase(&mut self)

Available on non-crate feature ferrocene_certified only.

Converts this value to its ASCII upper case equivalent in-place.

ASCII letters ‘a’ to ‘z’ are mapped to ‘A’ to ‘Z’, but non-ASCII letters are unchanged.

To return a new uppercased value without modifying the existing one, use to_ascii_uppercase.

Examples

let mut byte = b'a';

byte.make_ascii_uppercase();

assert_eq!(b'A', byte);

pub const fn make_ascii_lowercase(&mut self)

Available on non-crate feature ferrocene_certified only.

Converts this value to its ASCII lower case equivalent in-place.

ASCII letters ‘A’ to ‘Z’ are mapped to ‘a’ to ‘z’, but non-ASCII letters are unchanged.

To return a new lowercased value without modifying the existing one, use to_ascii_lowercase.

Examples

let mut byte = b'A';

byte.make_ascii_lowercase();

assert_eq!(b'a', byte);

pub const fn is_ascii_alphabetic(&self) -> bool

Available on non-crate feature ferrocene_certified only.

Checks if the value is an ASCII alphabetic character:

• U+0041 ‘A’ ..= U+005A ‘Z’, or
• U+0061 ‘a’ ..= U+007A ‘z’.

Examples

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';

assert!(uppercase_a.is_ascii_alphabetic());
assert!(uppercase_g.is_ascii_alphabetic());
assert!(a.is_ascii_alphabetic());
assert!(g.is_ascii_alphabetic());
assert!(!zero.is_ascii_alphabetic());
assert!(!percent.is_ascii_alphabetic());
assert!(!space.is_ascii_alphabetic());
assert!(!lf.is_ascii_alphabetic());
assert!(!esc.is_ascii_alphabetic());

pub const fn is_ascii_uppercase(&self) -> bool

Available on non-crate feature ferrocene_certified only.

Checks if the value is an ASCII uppercase character: U+0041 ‘A’ ..= U+005A ‘Z’.

Examples

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';

assert!(uppercase_a.is_ascii_uppercase());
assert!(uppercase_g.is_ascii_uppercase());
assert!(!a.is_ascii_uppercase());
assert!(!g.is_ascii_uppercase());
assert!(!zero.is_ascii_uppercase());
assert!(!percent.is_ascii_uppercase());
assert!(!space.is_ascii_uppercase());
assert!(!lf.is_ascii_uppercase());
assert!(!esc.is_ascii_uppercase());

pub const fn is_ascii_lowercase(&self) -> bool

Available on non-crate feature ferrocene_certified only.

Checks if the value is an ASCII lowercase character: U+0061 ‘a’ ..= U+007A ‘z’.

Examples

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';

assert!(!uppercase_a.is_ascii_lowercase());
assert!(!uppercase_g.is_ascii_lowercase());
assert!(a.is_ascii_lowercase());
assert!(g.is_ascii_lowercase());
assert!(!zero.is_ascii_lowercase());
assert!(!percent.is_ascii_lowercase());
assert!(!space.is_ascii_lowercase());
assert!(!lf.is_ascii_lowercase());
assert!(!esc.is_ascii_lowercase());

pub const fn is_ascii_alphanumeric(&self) -> bool

Available on non-crate feature ferrocene_certified only.

Checks if the value is an ASCII alphanumeric character:

• U+0041 ‘A’ ..= U+005A ‘Z’, or
• U+0061 ‘a’ ..= U+007A ‘z’, or
• U+0030 ‘0’ ..= U+0039 ‘9’.

Examples

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';

assert!(uppercase_a.is_ascii_alphanumeric());
assert!(uppercase_g.is_ascii_alphanumeric());
assert!(a.is_ascii_alphanumeric());
assert!(g.is_ascii_alphanumeric());
assert!(zero.is_ascii_alphanumeric());
assert!(!percent.is_ascii_alphanumeric());
assert!(!space.is_ascii_alphanumeric());
assert!(!lf.is_ascii_alphanumeric());
assert!(!esc.is_ascii_alphanumeric());

pub const fn is_ascii_digit(&self) -> bool

Available on non-crate feature ferrocene_certified only.

Checks if the value is an ASCII decimal digit: U+0030 ‘0’ ..= U+0039 ‘9’.

Examples

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';

assert!(!uppercase_a.is_ascii_digit());
assert!(!uppercase_g.is_ascii_digit());
assert!(!a.is_ascii_digit());
assert!(!g.is_ascii_digit());
assert!(zero.is_ascii_digit());
assert!(!percent.is_ascii_digit());
assert!(!space.is_ascii_digit());
assert!(!lf.is_ascii_digit());
assert!(!esc.is_ascii_digit());

pub const fn is_ascii_octdigit(&self) -> bool

🔬This is a nightly-only experimental API. (is_ascii_octdigit #101288)

Available on non-crate feature ferrocene_certified only.

Checks if the value is an ASCII octal digit: U+0030 ‘0’ ..= U+0037 ‘7’.

Examples

#![feature(is_ascii_octdigit)]

let uppercase_a = b'A';
let a = b'a';
let zero = b'0';
let seven = b'7';
let nine = b'9';
let percent = b'%';
let lf = b'\n';

assert!(!uppercase_a.is_ascii_octdigit());
assert!(!a.is_ascii_octdigit());
assert!(zero.is_ascii_octdigit());
assert!(seven.is_ascii_octdigit());
assert!(!nine.is_ascii_octdigit());
assert!(!percent.is_ascii_octdigit());
assert!(!lf.is_ascii_octdigit());

pub const fn is_ascii_hexdigit(&self) -> bool

Available on non-crate feature ferrocene_certified only.

Checks if the value is an ASCII hexadecimal digit:

• U+0030 ‘0’ ..= U+0039 ‘9’, or
• U+0041 ‘A’ ..= U+0046 ‘F’, or
• U+0061 ‘a’ ..= U+0066 ‘f’.

Examples

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';

assert!(uppercase_a.is_ascii_hexdigit());
assert!(!uppercase_g.is_ascii_hexdigit());
assert!(a.is_ascii_hexdigit());
assert!(!g.is_ascii_hexdigit());
assert!(zero.is_ascii_hexdigit());
assert!(!percent.is_ascii_hexdigit());
assert!(!space.is_ascii_hexdigit());
assert!(!lf.is_ascii_hexdigit());
assert!(!esc.is_ascii_hexdigit());

pub const fn is_ascii_punctuation(&self) -> bool

Available on non-crate feature ferrocene_certified only.

Checks if the value is an ASCII punctuation character:

• U+0021 ..= U+002F ! " # $ % & ' ( ) * + , - . /, or
• U+003A ..= U+0040 : ; < = > ? @, or
• U+005B ..= U+0060 [ \ ] ^ _ `, or
• U+007B ..= U+007E { | } ~

Examples

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';

assert!(!uppercase_a.is_ascii_punctuation());
assert!(!uppercase_g.is_ascii_punctuation());
assert!(!a.is_ascii_punctuation());
assert!(!g.is_ascii_punctuation());
assert!(!zero.is_ascii_punctuation());
assert!(percent.is_ascii_punctuation());
assert!(!space.is_ascii_punctuation());
assert!(!lf.is_ascii_punctuation());
assert!(!esc.is_ascii_punctuation());

pub const fn is_ascii_graphic(&self) -> bool

Available on non-crate feature ferrocene_certified only.

Checks if the value is an ASCII graphic character: U+0021 ‘!’ ..= U+007E ‘~’.

Examples

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';

assert!(uppercase_a.is_ascii_graphic());
assert!(uppercase_g.is_ascii_graphic());
assert!(a.is_ascii_graphic());
assert!(g.is_ascii_graphic());
assert!(zero.is_ascii_graphic());
assert!(percent.is_ascii_graphic());
assert!(!space.is_ascii_graphic());
assert!(!lf.is_ascii_graphic());
assert!(!esc.is_ascii_graphic());

pub const fn is_ascii_whitespace(&self) -> bool

Available on non-crate feature ferrocene_certified only.

Checks if the value is an ASCII whitespace character: U+0020 SPACE, U+0009 HORIZONTAL TAB, U+000A LINE FEED, U+000C FORM FEED, or U+000D CARRIAGE RETURN.

Rust uses the WhatWG Infra Standard’s definition of ASCII whitespace. There are several other definitions in wide use. For instance, the POSIX locale includes U+000B VERTICAL TAB as well as all the above characters, but—from the very same specification—the default rule for “field splitting” in the Bourne shell considers only SPACE, HORIZONTAL TAB, and LINE FEED as whitespace.

If you are writing a program that will process an existing file format, check what that format’s definition of whitespace is before using this function.

Examples

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';

assert!(!uppercase_a.is_ascii_whitespace());
assert!(!uppercase_g.is_ascii_whitespace());
assert!(!a.is_ascii_whitespace());
assert!(!g.is_ascii_whitespace());
assert!(!zero.is_ascii_whitespace());
assert!(!percent.is_ascii_whitespace());
assert!(space.is_ascii_whitespace());
assert!(lf.is_ascii_whitespace());
assert!(!esc.is_ascii_whitespace());

pub const fn is_ascii_control(&self) -> bool

Available on non-crate feature ferrocene_certified only.

Checks if the value is an ASCII control character: U+0000 NUL ..= U+001F UNIT SEPARATOR, or U+007F DELETE. Note that most ASCII whitespace characters are control characters, but SPACE is not.

Examples

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = b'\x1b';

assert!(!uppercase_a.is_ascii_control());
assert!(!uppercase_g.is_ascii_control());
assert!(!a.is_ascii_control());
assert!(!g.is_ascii_control());
assert!(!zero.is_ascii_control());
assert!(!percent.is_ascii_control());
assert!(!space.is_ascii_control());
assert!(lf.is_ascii_control());
assert!(esc.is_ascii_control());

pub fn escape_ascii(self) -> EscapeDefault

Available on non-crate feature ferrocene_certified only.

Returns an iterator that produces an escaped version of a u8, treating it as an ASCII character.

The behavior is identical to ascii::escape_default.

Examples

assert_eq!("0", b'0'.escape_ascii().to_string());
assert_eq!("\\t", b'\t'.escape_ascii().to_string());
assert_eq!("\\r", b'\r'.escape_ascii().to_string());
assert_eq!("\\n", b'\n'.escape_ascii().to_string());
assert_eq!("\\'", b'\''.escape_ascii().to_string());
assert_eq!("\\\"", b'"'.escape_ascii().to_string());
assert_eq!("\\\\", b'\\'.escape_ascii().to_string());
assert_eq!("\\x9d", b'\x9d'.escape_ascii().to_string());

impl u8

pub const fn from_str_radix(src: &str, radix: u32) -> Result<u8, ParseIntError>

Parses an integer from a string slice with digits in a given base.

The string is expected to be an optional + sign followed by only digits. Leading and trailing non-digit characters (including whitespace) represent an error. Underscores (which are accepted in Rust literals) also represent an error.

Digits are a subset of these characters, depending on radix:

• 0-9
• a-z
• A-Z

Panics

This function panics if radix is not in the range from 2 to 36.

Examples

assert_eq!(u8::from_str_radix("A", 16), Ok(10));

Trailing space returns error:

assert!(u8::from_str_radix("1 ", 10).is_err());

pub const fn from_ascii(src: &[u8]) -> Result<u8, ParseIntError>

🔬This is a nightly-only experimental API. (int_from_ascii #134821)

Parses an integer from an ASCII-byte slice with decimal digits.

The characters are expected to be an optional + sign followed by only digits. Leading and trailing non-digit characters (including whitespace) represent an error. Underscores (which are accepted in Rust literals) also represent an error.

Examples

#![feature(int_from_ascii)]

assert_eq!(u8::from_ascii(b"+10"), Ok(10));

Trailing space returns error:

assert!(u8::from_ascii(b"1 ").is_err());

pub const fn from_ascii_radix( src: &[u8], radix: u32, ) -> Result<u8, ParseIntError>

🔬This is a nightly-only experimental API. (int_from_ascii #134821)

Parses an integer from an ASCII-byte slice with digits in a given base.

The characters are expected to be an optional + sign followed by only digits. Leading and trailing non-digit characters (including whitespace) represent an error. Underscores (which are accepted in Rust literals) also represent an error.

Digits are a subset of these characters, depending on radix:

• 0-9
• a-z
• A-Z

Panics

This function panics if radix is not in the range from 2 to 36.

Examples

#![feature(int_from_ascii)]

assert_eq!(u8::from_ascii_radix(b"A", 16), Ok(10));

Trailing space returns error:

assert!(u8::from_ascii_radix(b"1 ", 10).is_err());

impl u8

pub fn format_into(self, buf: &mut NumBuffer<Self>) -> &str

🔬This is a nightly-only experimental API. (int_format_into #138215)

Available on non-crate feature ferrocene_certified and (WebAssembly) only.

Allows users to write an integer (in signed decimal format) into a variable buf of type NumBuffer that is passed by the caller by mutable reference.

Examples

#![feature(int_format_into)]
use core::fmt::NumBuffer;

let n = 0u8;
let mut buf = NumBuffer::new();
assert_eq!(n.format_into(&mut buf), "0");

let n1 = 32u8;
assert_eq!(n1.format_into(&mut buf), "32");

let n2 = u8 :: MAX;
assert_eq!(n2.format_into(&mut buf), u8 :: MAX.to_string());

Trait Implementations

impl Add<&u8> for &u8

type Output = <u8 as Add>::Output

The resulting type after applying the + operator.

fn add(self, other: &u8) -> <u8 as Add<u8>>::Output

Performs the + operation.

impl Add<&u8> for u8

type Output = <u8 as Add>::Output

The resulting type after applying the + operator.

fn add(self, other: &u8) -> <u8 as Add<u8>>::Output

Performs the + operation.

impl Add<u8> for &u8

type Output = <u8 as Add>::Output

The resulting type after applying the + operator.

fn add(self, other: u8) -> <u8 as Add<u8>>::Output

Performs the + operation.

impl Add for u8

type Output = u8

The resulting type after applying the + operator.

fn add(self, other: u8) -> u8

Performs the + operation.

impl AddAssign<&u8> for Saturating<u8>

Available on non-crate feature ferrocene_certified only.

fn add_assign(&mut self, other: &u8)

Performs the += operation.

impl AddAssign<&u8> for Wrapping<u8>

Available on non-crate feature ferrocene_certified only.

fn add_assign(&mut self, other: &u8)

Performs the += operation.

impl AddAssign<&u8> for u8

fn add_assign(&mut self, other: &u8)

Performs the += operation.

impl AddAssign<u8> for Saturating<u8>

Available on non-crate feature ferrocene_certified only.

fn add_assign(&mut self, other: u8)

Performs the += operation.

impl AddAssign<u8> for Wrapping<u8>

Available on non-crate feature ferrocene_certified only.

fn add_assign(&mut self, other: u8)

Performs the += operation.

impl AddAssign for u8

fn add_assign(&mut self, other: u8)

Performs the += operation.

impl AtomicPrimitive for u8

type AtomicInner = AtomicU8

🔬This is a nightly-only experimental API. (atomic_internals)

Temporary implementation detail.

impl Binary for u8

Available on non-crate feature ferrocene_certified only.

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Format unsigned integers in the radix.

impl BitAnd<&u8> for &u8

type Output = <u8 as BitAnd>::Output

The resulting type after applying the & operator.

fn bitand(self, other: &u8) -> <u8 as BitAnd<u8>>::Output

Performs the & operation.

impl BitAnd<&u8> for u8

type Output = <u8 as BitAnd>::Output

The resulting type after applying the & operator.

fn bitand(self, other: &u8) -> <u8 as BitAnd<u8>>::Output

Performs the & operation.

impl BitAnd<u8> for &u8

type Output = <u8 as BitAnd>::Output

The resulting type after applying the & operator.

fn bitand(self, other: u8) -> <u8 as BitAnd<u8>>::Output

Performs the & operation.

impl BitAnd for u8

type Output = u8

The resulting type after applying the & operator.

fn bitand(self, rhs: u8) -> u8

Performs the & operation.

impl BitAndAssign<&u8> for Saturating<u8>

Available on non-crate feature ferrocene_certified only.

fn bitand_assign(&mut self, other: &u8)

Performs the &= operation.

impl BitAndAssign<&u8> for Wrapping<u8>

Available on non-crate feature ferrocene_certified only.

fn bitand_assign(&mut self, other: &u8)

Performs the &= operation.

impl BitAndAssign<&u8> for u8

fn bitand_assign(&mut self, other: &u8)

Performs the &= operation.

impl BitAndAssign<u8> for Saturating<u8>

Available on non-crate feature ferrocene_certified only.

fn bitand_assign(&mut self, other: u8)

Performs the &= operation.

impl BitAndAssign<u8> for Wrapping<u8>

Available on non-crate feature ferrocene_certified only.

fn bitand_assign(&mut self, other: u8)

Performs the &= operation.

impl BitAndAssign for u8

fn bitand_assign(&mut self, other: u8)

Performs the &= operation.

impl BitOr<&u8> for &u8

type Output = <u8 as BitOr>::Output

The resulting type after applying the | operator.

fn bitor(self, other: &u8) -> <u8 as BitOr<u8>>::Output

Performs the | operation.

impl BitOr<&u8> for u8

type Output = <u8 as BitOr>::Output

The resulting type after applying the | operator.

fn bitor(self, other: &u8) -> <u8 as BitOr<u8>>::Output

Performs the | operation.

impl BitOr<u8> for &u8

type Output = <u8 as BitOr>::Output

The resulting type after applying the | operator.

fn bitor(self, other: u8) -> <u8 as BitOr<u8>>::Output

Performs the | operation.

impl BitOr for u8

type Output = u8

The resulting type after applying the | operator.

fn bitor(self, rhs: u8) -> u8

Performs the | operation.

impl BitOrAssign<&u8> for Saturating<u8>

Available on non-crate feature ferrocene_certified only.

fn bitor_assign(&mut self, other: &u8)

Performs the |= operation.

impl BitOrAssign<&u8> for Wrapping<u8>

Available on non-crate feature ferrocene_certified only.

fn bitor_assign(&mut self, other: &u8)

Performs the |= operation.

impl BitOrAssign<&u8> for u8

fn bitor_assign(&mut self, other: &u8)

Performs the |= operation.

impl BitOrAssign<u8> for Saturating<u8>

Available on non-crate feature ferrocene_certified only.

fn bitor_assign(&mut self, other: u8)

Performs the |= operation.

impl BitOrAssign<u8> for Wrapping<u8>

Available on non-crate feature ferrocene_certified only.

fn bitor_assign(&mut self, other: u8)

Performs the |= operation.

impl BitOrAssign for u8

fn bitor_assign(&mut self, other: u8)

Performs the |= operation.

impl BitXor<&u8> for &u8

type Output = <u8 as BitXor>::Output

The resulting type after applying the ^ operator.

fn bitxor(self, other: &u8) -> <u8 as BitXor<u8>>::Output

Performs the ^ operation.

impl BitXor<&u8> for u8

type Output = <u8 as BitXor>::Output

The resulting type after applying the ^ operator.

fn bitxor(self, other: &u8) -> <u8 as BitXor<u8>>::Output

Performs the ^ operation.

impl BitXor<u8> for &u8

type Output = <u8 as BitXor>::Output

The resulting type after applying the ^ operator.

fn bitxor(self, other: u8) -> <u8 as BitXor<u8>>::Output

Performs the ^ operation.

impl BitXor for u8

type Output = u8

The resulting type after applying the ^ operator.

fn bitxor(self, other: u8) -> u8

Performs the ^ operation.

impl BitXorAssign<&u8> for Saturating<u8>

Available on non-crate feature ferrocene_certified only.

fn bitxor_assign(&mut self, other: &u8)

Performs the ^= operation.

impl BitXorAssign<&u8> for Wrapping<u8>

Available on non-crate feature ferrocene_certified only.

fn bitxor_assign(&mut self, other: &u8)

Performs the ^= operation.

impl BitXorAssign<&u8> for u8

fn bitxor_assign(&mut self, other: &u8)

Performs the ^= operation.

impl BitXorAssign<u8> for Saturating<u8>

Available on non-crate feature ferrocene_certified only.

fn bitxor_assign(&mut self, other: u8)

Performs the ^= operation.

impl BitXorAssign<u8> for Wrapping<u8>

Available on non-crate feature ferrocene_certified only.

fn bitxor_assign(&mut self, other: u8)

Performs the ^= operation.

impl BitXorAssign for u8

fn bitxor_assign(&mut self, other: u8)

Performs the ^= operation.

impl CarryingMulAdd for u8

Available on non-crate feature ferrocene_certified only.

type Unsigned = u8

🔬This is a nightly-only experimental API. (core_intrinsics_fallbacks)

fn carrying_mul_add(self, a: Self, b: Self, c: Self) -> (u8, u8)

🔬This is a nightly-only experimental API. (core_intrinsics_fallbacks)

impl Clone for u8

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

where Self:,

Performs copy-assignment from source.

impl Debug for u8

Available on non-crate feature ferrocene_certified only.

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for u8

fn default() -> u8

Returns the default value of 0

impl DisjointBitOr for u8

Available on non-crate feature ferrocene_certified only.

unsafe fn disjoint_bitor(self, other: Self) -> Self

🔬This is a nightly-only experimental API. (core_intrinsics_fallbacks)

See super::disjoint_bitor; we just need the trait indirection to handle different types since calling intrinsics with generics doesn’t work.

impl Display for u8

Available on (WebAssembly) and non-crate feature ferrocene_certified only.

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Distribution<u8> for RangeFull

Available on non-crate feature ferrocene_certified only.

fn sample(&self, source: &mut (impl RandomSource + ?Sized)) -> u8

🔬This is a nightly-only experimental API. (random #130703)

Samples a random value from the distribution, using the specified random source.

impl Div<&u8> for &u8

type Output = <u8 as Div>::Output

The resulting type after applying the / operator.

fn div(self, other: &u8) -> <u8 as Div<u8>>::Output

Performs the / operation.

impl Div<&u8> for u8

type Output = <u8 as Div>::Output

The resulting type after applying the / operator.

fn div(self, other: &u8) -> <u8 as Div<u8>>::Output

Performs the / operation.

impl Div<NonZero<u8>> for u8

Available on non-crate feature ferrocene_certified only.

fn div(self, other: NonZero<u8>) -> u8

Same as self / other.get(), but because other is a NonZero<_>, there’s never a runtime check for division-by-zero.

This operation rounds towards zero, truncating any fractional part of the exact result, and cannot panic.

type Output = u8

The resulting type after applying the / operator.

impl Div<u8> for &u8

type Output = <u8 as Div>::Output

The resulting type after applying the / operator.

fn div(self, other: u8) -> <u8 as Div<u8>>::Output

Performs the / operation.

impl Div for u8

This operation rounds towards zero, truncating any fractional part of the exact result.

Panics

This operation will panic if other == 0.

type Output = u8

The resulting type after applying the / operator.

fn div(self, other: u8) -> u8

Performs the / operation.

impl DivAssign<&u8> for Saturating<u8>

Available on non-crate feature ferrocene_certified only.

fn div_assign(&mut self, other: &u8)

Performs the /= operation.

impl DivAssign<&u8> for Wrapping<u8>

Available on non-crate feature ferrocene_certified only.

fn div_assign(&mut self, other: &u8)

Performs the /= operation.

impl DivAssign<&u8> for u8

fn div_assign(&mut self, other: &u8)

Performs the /= operation.

impl DivAssign<NonZero<u8>> for u8

Available on non-crate feature ferrocene_certified only.

fn div_assign(&mut self, other: NonZero<u8>)

Same as self /= other.get(), but because other is a NonZero<_>, there’s never a runtime check for division-by-zero.

This operation rounds towards zero, truncating any fractional part of the exact result, and cannot panic.

impl DivAssign<u8> for Saturating<u8>

Available on non-crate feature ferrocene_certified only.

fn div_assign(&mut self, other: u8)

Performs the /= operation.

impl DivAssign<u8> for Wrapping<u8>

Available on non-crate feature ferrocene_certified only.

fn div_assign(&mut self, other: u8)

Performs the /= operation.

impl DivAssign for u8

fn div_assign(&mut self, other: u8)

Performs the /= operation.

impl From<AsciiChar> for u8

Available on non-crate feature ferrocene_certified only.

fn from(chr: AsciiChar) -> u8

Converts to this type from the input type.

impl From<bool> for u8

Available on non-crate feature ferrocene_certified only.

fn from(small: bool) -> Self

Converts a bool to u8 losslessly. The resulting value is 0 for false and 1 for true values.

Examples

assert_eq!(u8::from(true), 1);
assert_eq!(u8::from(false), 0);

impl From<u8> for AtomicU8

fn from(v: u8) -> Self

Converts an u8 into an AtomicU8.

impl From<u8> for char

Available on non-crate feature ferrocene_certified only.

Maps a byte in 0x00..=0xFF to a char whose code point has the same value, in U+0000..=U+00FF.

Unicode is designed such that this effectively decodes bytes with the character encoding that IANA calls ISO-8859-1. This encoding is compatible with ASCII.

Note that this is different from ISO/IEC 8859-1 a.k.a. ISO 8859-1 (with one less hyphen), which leaves some “blanks”, byte values that are not assigned to any character. ISO-8859-1 (the IANA one) assigns them to the C0 and C1 control codes.

Note that this is also different from Windows-1252 a.k.a. code page 1252, which is a superset ISO/IEC 8859-1 that assigns some (not all!) blanks to punctuation and various Latin characters.

To confuse things further, on the Web ascii, iso-8859-1, and windows-1252 are all aliases for a superset of Windows-1252 that fills the remaining blanks with corresponding C0 and C1 control codes.

fn from(i: u8) -> Self

Converts a u8 into a char.

Examples

let u = 32 as u8;
let c = char::from(u);
assert!(4 == size_of_val(&c))

impl From<u8> for f128

Available on non-crate feature ferrocene_certified only.

fn from(small: u8) -> Self

Converts u8 to f128 losslessly.

impl From<u8> for f16

Available on non-crate feature ferrocene_certified only.

fn from(small: u8) -> Self

Converts u8 to f16 losslessly.

impl From<u8> for f32

Available on non-crate feature ferrocene_certified only.

fn from(small: u8) -> Self

Converts u8 to f32 losslessly.

impl From<u8> for f64

Available on non-crate feature ferrocene_certified only.

fn from(small: u8) -> Self

Converts u8 to f64 losslessly.

impl From<u8> for i128

Available on non-crate feature ferrocene_certified only.

fn from(small: u8) -> Self

Converts u8 to i128 losslessly.

impl From<u8> for i16

Available on non-crate feature ferrocene_certified only.

fn from(small: u8) -> Self

Converts u8 to i16 losslessly.

impl From<u8> for i32

Available on non-crate feature ferrocene_certified only.

fn from(small: u8) -> Self

Converts u8 to i32 losslessly.

impl From<u8> for i64

Available on non-crate feature ferrocene_certified only.

fn from(small: u8) -> Self

Converts u8 to i64 losslessly.

impl From<u8> for isize

Available on non-crate feature ferrocene_certified only.

fn from(small: u8) -> Self

Converts u8 to isize losslessly.

impl From<u8> for u128

Available on non-crate feature ferrocene_certified only.

fn from(small: u8) -> Self

Converts u8 to u128 losslessly.

impl From<u8> for u16

Available on non-crate feature ferrocene_certified only.

fn from(small: u8) -> Self

Converts u8 to u16 losslessly.

impl From<u8> for u32

Available on non-crate feature ferrocene_certified only.

fn from(small: u8) -> Self

Converts u8 to u32 losslessly.

impl From<u8> for u64

Available on non-crate feature ferrocene_certified only.

fn from(small: u8) -> Self

Converts u8 to u64 losslessly.

impl From<u8> for usize

Available on non-crate feature ferrocene_certified only.

fn from(small: u8) -> Self

Converts u8 to usize losslessly.

impl FromStr for u8

fn from_str(src: &str) -> Result<u8, ParseIntError>

Available on non-crate feature ferrocene_certified only.

Parses an integer from a string slice with decimal digits.

The characters are expected to be an optional + sign followed by only digits. Leading and trailing non-digit characters (including whitespace) represent an error. Underscores (which are accepted in Rust literals) also represent an error.

Examples

use std::str::FromStr;

assert_eq!(u8::from_str("+10"), Ok(10));

Trailing space returns error:

assert!(u8::from_str("1 ").is_err());

type Err = ParseIntError

Available on non-crate feature ferrocene_certified only.

The associated error which can be returned from parsing.

impl FunnelShift for u8

Available on non-crate feature ferrocene_certified only.

unsafe fn unchecked_funnel_shl(self, rhs: Self, shift: u32) -> Self

🔬This is a nightly-only experimental API. (core_intrinsics_fallbacks)

See super::unchecked_funnel_shl; we just need the trait indirection to handle different types since calling intrinsics with generics doesn’t work.

unsafe fn unchecked_funnel_shr(self, rhs: Self, shift: u32) -> Self

🔬This is a nightly-only experimental API. (core_intrinsics_fallbacks)

See super::unchecked_funnel_shr; we just need the trait indirection to handle different types since calling intrinsics with generics doesn’t work.

impl Hash for u8

Available on non-crate feature ferrocene_certified only.

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H: Hasher>(data: &[u8], state: &mut H)

Feeds a slice of this type into the given Hasher.

impl LowerExp for u8

Available on (WebAssembly) and non-crate feature ferrocene_certified only.

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl LowerHex for u8

Available on non-crate feature ferrocene_certified only.

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Format unsigned integers in the radix.

impl Mul<&u8> for &u8

type Output = <u8 as Mul>::Output

The resulting type after applying the * operator.

fn mul(self, other: &u8) -> <u8 as Mul<u8>>::Output

Performs the * operation.

impl Mul<&u8> for u8

type Output = <u8 as Mul>::Output

The resulting type after applying the * operator.

fn mul(self, other: &u8) -> <u8 as Mul<u8>>::Output

Performs the * operation.

impl Mul<u8> for &u8

type Output = <u8 as Mul>::Output

The resulting type after applying the * operator.

fn mul(self, other: u8) -> <u8 as Mul<u8>>::Output

Performs the * operation.

impl Mul for u8

type Output = u8

The resulting type after applying the * operator.

fn mul(self, other: u8) -> u8

Performs the * operation.

impl MulAssign<&u8> for Saturating<u8>

Available on non-crate feature ferrocene_certified only.

fn mul_assign(&mut self, other: &u8)

Performs the *= operation.

impl MulAssign<&u8> for Wrapping<u8>

Available on non-crate feature ferrocene_certified only.

fn mul_assign(&mut self, other: &u8)

Performs the *= operation.

impl MulAssign<&u8> for u8

fn mul_assign(&mut self, other: &u8)

Performs the *= operation.

impl MulAssign<u8> for Saturating<u8>

Available on non-crate feature ferrocene_certified only.

fn mul_assign(&mut self, other: u8)

Performs the *= operation.

impl MulAssign<u8> for Wrapping<u8>

Available on non-crate feature ferrocene_certified only.

fn mul_assign(&mut self, other: u8)

Performs the *= operation.

impl MulAssign for u8

fn mul_assign(&mut self, other: u8)

Performs the *= operation.

impl Not for &u8

type Output = <u8 as Not>::Output

The resulting type after applying the ! operator.

fn not(self) -> <u8 as Not>::Output

Performs the unary ! operation.

impl Not for u8

type Output = u8

The resulting type after applying the ! operator.

fn not(self) -> u8

Performs the unary ! operation.

impl NumBufferTrait for u8

Available on non-crate feature ferrocene_certified only.

const BUF_SIZE: usize = 3usize

🔬This is a nightly-only experimental API. (int_format_into #138215)

Maximum number of digits in decimal base of the implemented integer.

impl Octal for u8

Available on non-crate feature ferrocene_certified only.

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Format unsigned integers in the radix.

impl Ord for u8

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for u8

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Self) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for u8

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Self) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Self) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Self) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Self) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a> Product<&'a u8> for u8

Available on non-crate feature ferrocene_certified only.

fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self

Takes an iterator and generates Self from the elements by multiplying the items.

impl Product for u8

Available on non-crate feature ferrocene_certified only.

fn product<I: Iterator<Item = Self>>(iter: I) -> Self

Takes an iterator and generates Self from the elements by multiplying the items.

impl RangePattern for u8

Available on non-crate feature ferrocene_certified only.

const MIN: u8 = 0u8

🔬This is a nightly-only experimental API. (pattern_type_range_trait #123646)

Trait version of the inherent MIN assoc const.

const MAX: u8 = 255u8

🔬This is a nightly-only experimental API. (pattern_type_range_trait #123646)

Trait version of the inherent MIN assoc const.

fn sub_one(self) -> Self

🔬This is a nightly-only experimental API. (pattern_type_range_trait #123646)

A compile-time helper to subtract 1 for exclusive ranges.

impl Rem<&u8> for &u8

type Output = <u8 as Rem>::Output

The resulting type after applying the % operator.

fn rem(self, other: &u8) -> <u8 as Rem<u8>>::Output

Performs the % operation.

impl Rem<&u8> for u8

type Output = <u8 as Rem>::Output

The resulting type after applying the % operator.

fn rem(self, other: &u8) -> <u8 as Rem<u8>>::Output

Performs the % operation.

impl Rem<NonZero<u8>> for u8

Available on non-crate feature ferrocene_certified only.

fn rem(self, other: NonZero<u8>) -> u8

This operation satisfies n % d == n - (n / d) * d, and cannot panic.

type Output = u8

The resulting type after applying the % operator.

impl Rem<u8> for &u8

type Output = <u8 as Rem>::Output

The resulting type after applying the % operator.

fn rem(self, other: u8) -> <u8 as Rem<u8>>::Output

Performs the % operation.

impl Rem for u8

This operation satisfies n % d == n - (n / d) * d. The result has the same sign as the left operand.

Panics

This operation will panic if other == 0.

type Output = u8

The resulting type after applying the % operator.

fn rem(self, other: u8) -> u8

Performs the % operation.

impl RemAssign<&u8> for Saturating<u8>

Available on non-crate feature ferrocene_certified only.

fn rem_assign(&mut self, other: &u8)

Performs the %= operation.

impl RemAssign<&u8> for Wrapping<u8>

Available on non-crate feature ferrocene_certified only.

fn rem_assign(&mut self, other: &u8)

Performs the %= operation.

impl RemAssign<&u8> for u8

fn rem_assign(&mut self, other: &u8)

Performs the %= operation.

impl RemAssign<NonZero<u8>> for u8

Available on non-crate feature ferrocene_certified only.

fn rem_assign(&mut self, other: NonZero<u8>)

This operation satisfies n % d == n - (n / d) * d, and cannot panic.

impl RemAssign<u8> for Saturating<u8>

Available on non-crate feature ferrocene_certified only.

fn rem_assign(&mut self, other: u8)

Performs the %= operation.

impl RemAssign<u8> for Wrapping<u8>

Available on non-crate feature ferrocene_certified only.

fn rem_assign(&mut self, other: u8)

Performs the %= operation.

impl RemAssign for u8

fn rem_assign(&mut self, other: u8)

Performs the %= operation.

impl Shl<&i128> for &u8

type Output = <u8 as Shl<i128>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &i128) -> <u8 as Shl<i128>>::Output

Performs the << operation.

impl Shl<&i128> for u8

type Output = <u8 as Shl<i128>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &i128) -> <u8 as Shl<i128>>::Output

Performs the << operation.

impl Shl<&i16> for &u8

type Output = <u8 as Shl<i16>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &i16) -> <u8 as Shl<i16>>::Output

Performs the << operation.

impl Shl<&i16> for u8

type Output = <u8 as Shl<i16>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &i16) -> <u8 as Shl<i16>>::Output

Performs the << operation.

impl Shl<&i32> for &u8

type Output = <u8 as Shl<i32>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &i32) -> <u8 as Shl<i32>>::Output

Performs the << operation.

impl Shl<&i32> for u8

type Output = <u8 as Shl<i32>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &i32) -> <u8 as Shl<i32>>::Output

Performs the << operation.

impl Shl<&i64> for &u8

type Output = <u8 as Shl<i64>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &i64) -> <u8 as Shl<i64>>::Output

Performs the << operation.

impl Shl<&i64> for u8

type Output = <u8 as Shl<i64>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &i64) -> <u8 as Shl<i64>>::Output

Performs the << operation.

impl Shl<&i8> for &u8

type Output = <u8 as Shl<i8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &i8) -> <u8 as Shl<i8>>::Output

Performs the << operation.

impl Shl<&i8> for u8

type Output = <u8 as Shl<i8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &i8) -> <u8 as Shl<i8>>::Output

Performs the << operation.

impl Shl<&isize> for &u8

type Output = <u8 as Shl<isize>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &isize) -> <u8 as Shl<isize>>::Output

Performs the << operation.

impl Shl<&isize> for u8

type Output = <u8 as Shl<isize>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &isize) -> <u8 as Shl<isize>>::Output

Performs the << operation.

impl Shl<&u128> for &u8

type Output = <u8 as Shl<u128>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u128) -> <u8 as Shl<u128>>::Output

Performs the << operation.

impl Shl<&u128> for u8

type Output = <u8 as Shl<u128>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u128) -> <u8 as Shl<u128>>::Output

Performs the << operation.

impl Shl<&u16> for &u8

type Output = <u8 as Shl<u16>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u16) -> <u8 as Shl<u16>>::Output

Performs the << operation.

impl Shl<&u16> for u8

type Output = <u8 as Shl<u16>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u16) -> <u8 as Shl<u16>>::Output

Performs the << operation.

impl Shl<&u32> for &u8

type Output = <u8 as Shl<u32>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u32) -> <u8 as Shl<u32>>::Output

Performs the << operation.

impl Shl<&u32> for u8

type Output = <u8 as Shl<u32>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u32) -> <u8 as Shl<u32>>::Output

Performs the << operation.

impl Shl<&u64> for &u8

type Output = <u8 as Shl<u64>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u64) -> <u8 as Shl<u64>>::Output

Performs the << operation.

impl Shl<&u64> for u8

type Output = <u8 as Shl<u64>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u64) -> <u8 as Shl<u64>>::Output

Performs the << operation.

impl<'lhs, const N: usize> Shl<&u8> for &'lhs Simd<u8, N>

where LaneCount<N>: SupportedLaneCount,

Available on non-crate feature ferrocene_certified only.

type Output = Simd<u8, N>

The resulting type after applying the << operator.

fn shl(self, rhs: &u8) -> Self::Output

Performs the << operation.

impl Shl<&u8> for &i128

type Output = <i128 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <i128 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for &i16

type Output = <i16 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <i16 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for &i32

type Output = <i32 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <i32 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for &i64

type Output = <i64 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <i64 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for &i8

type Output = <i8 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <i8 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for &isize

type Output = <isize as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <isize as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for &u128

type Output = <u128 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <u128 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for &u16

type Output = <u16 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <u16 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for &u32

type Output = <u32 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <u32 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for &u64

type Output = <u64 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <u64 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for &u8

type Output = <u8 as Shl>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <u8 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for &usize

type Output = <usize as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <usize as Shl<u8>>::Output

Performs the << operation.

impl<const N: usize> Shl<&u8> for Simd<u8, N>

where LaneCount<N>: SupportedLaneCount,

Available on non-crate feature ferrocene_certified only.

type Output = Simd<u8, N>

The resulting type after applying the << operator.

fn shl(self, rhs: &u8) -> Self::Output

Performs the << operation.

impl Shl<&u8> for i128

type Output = <i128 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <i128 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for i16

type Output = <i16 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <i16 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for i32

type Output = <i32 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <i32 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for i64

type Output = <i64 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <i64 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for i8

type Output = <i8 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <i8 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for isize

type Output = <isize as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <isize as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for u128

type Output = <u128 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <u128 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for u16

type Output = <u16 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <u16 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for u32

type Output = <u32 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <u32 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for u64

type Output = <u64 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <u64 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for u8

type Output = <u8 as Shl>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <u8 as Shl<u8>>::Output

Performs the << operation.

impl Shl<&u8> for usize

type Output = <usize as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &u8) -> <usize as Shl<u8>>::Output

Performs the << operation.

impl Shl<&usize> for &u8

type Output = <u8 as Shl<usize>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &usize) -> <u8 as Shl<usize>>::Output

Performs the << operation.

impl Shl<&usize> for u8

type Output = <u8 as Shl<usize>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &usize) -> <u8 as Shl<usize>>::Output

Performs the << operation.

impl Shl<i128> for &u8

type Output = <u8 as Shl<i128>>::Output

The resulting type after applying the << operator.

fn shl(self, other: i128) -> <u8 as Shl<i128>>::Output

Performs the << operation.

impl Shl<i128> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: i128) -> u8

Performs the << operation.

impl Shl<i16> for &u8

type Output = <u8 as Shl<i16>>::Output

The resulting type after applying the << operator.

fn shl(self, other: i16) -> <u8 as Shl<i16>>::Output

Performs the << operation.

impl Shl<i16> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: i16) -> u8

Performs the << operation.

impl Shl<i32> for &u8

type Output = <u8 as Shl<i32>>::Output

The resulting type after applying the << operator.

fn shl(self, other: i32) -> <u8 as Shl<i32>>::Output

Performs the << operation.

impl Shl<i32> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: i32) -> u8

Performs the << operation.

impl Shl<i64> for &u8

type Output = <u8 as Shl<i64>>::Output

The resulting type after applying the << operator.

fn shl(self, other: i64) -> <u8 as Shl<i64>>::Output

Performs the << operation.

impl Shl<i64> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: i64) -> u8

Performs the << operation.

impl Shl<i8> for &u8

type Output = <u8 as Shl<i8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: i8) -> <u8 as Shl<i8>>::Output

Performs the << operation.

impl Shl<i8> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: i8) -> u8

Performs the << operation.

impl Shl<isize> for &u8

type Output = <u8 as Shl<isize>>::Output

The resulting type after applying the << operator.

fn shl(self, other: isize) -> <u8 as Shl<isize>>::Output

Performs the << operation.

impl Shl<isize> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: isize) -> u8

Performs the << operation.

impl Shl<u128> for &u8

type Output = <u8 as Shl<u128>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u128) -> <u8 as Shl<u128>>::Output

Performs the << operation.

impl Shl<u128> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: u128) -> u8

Performs the << operation.

impl Shl<u16> for &u8

type Output = <u8 as Shl<u16>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u16) -> <u8 as Shl<u16>>::Output

Performs the << operation.

impl Shl<u16> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: u16) -> u8

Performs the << operation.

impl Shl<u32> for &u8

type Output = <u8 as Shl<u32>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u32) -> <u8 as Shl<u32>>::Output

Performs the << operation.

impl Shl<u32> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: u32) -> u8

Performs the << operation.

impl Shl<u64> for &u8

type Output = <u8 as Shl<u64>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u64) -> <u8 as Shl<u64>>::Output

Performs the << operation.

impl Shl<u64> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: u64) -> u8

Performs the << operation.

impl<'lhs, const N: usize> Shl<u8> for &'lhs Simd<u8, N>

where LaneCount<N>: SupportedLaneCount,

Available on non-crate feature ferrocene_certified only.

type Output = Simd<u8, N>

The resulting type after applying the << operator.

fn shl(self, rhs: u8) -> Self::Output

Performs the << operation.

impl Shl<u8> for &i128

type Output = <i128 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u8) -> <i128 as Shl<u8>>::Output

Performs the << operation.

impl Shl<u8> for &i16

type Output = <i16 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u8) -> <i16 as Shl<u8>>::Output

Performs the << operation.

impl Shl<u8> for &i32

type Output = <i32 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u8) -> <i32 as Shl<u8>>::Output

Performs the << operation.

impl Shl<u8> for &i64

type Output = <i64 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u8) -> <i64 as Shl<u8>>::Output

Performs the << operation.

impl Shl<u8> for &i8

type Output = <i8 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u8) -> <i8 as Shl<u8>>::Output

Performs the << operation.

impl Shl<u8> for &isize

type Output = <isize as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u8) -> <isize as Shl<u8>>::Output

Performs the << operation.

impl Shl<u8> for &u128

type Output = <u128 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u8) -> <u128 as Shl<u8>>::Output

Performs the << operation.

impl Shl<u8> for &u16

type Output = <u16 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u8) -> <u16 as Shl<u8>>::Output

Performs the << operation.

impl Shl<u8> for &u32

type Output = <u32 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u8) -> <u32 as Shl<u8>>::Output

Performs the << operation.

impl Shl<u8> for &u64

type Output = <u64 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u8) -> <u64 as Shl<u8>>::Output

Performs the << operation.

impl Shl<u8> for &u8

type Output = <u8 as Shl>::Output

The resulting type after applying the << operator.

fn shl(self, other: u8) -> <u8 as Shl<u8>>::Output

Performs the << operation.

impl Shl<u8> for &usize

type Output = <usize as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u8) -> <usize as Shl<u8>>::Output

Performs the << operation.

impl<const N: usize> Shl<u8> for Simd<u8, N>

where LaneCount<N>: SupportedLaneCount,

Available on non-crate feature ferrocene_certified only.

type Output = Simd<u8, N>

The resulting type after applying the << operator.

fn shl(self, rhs: u8) -> Self::Output

Performs the << operation.

impl Shl<u8> for i128

type Output = i128

The resulting type after applying the << operator.

fn shl(self, other: u8) -> i128

Performs the << operation.

impl Shl<u8> for i16

type Output = i16

The resulting type after applying the << operator.

fn shl(self, other: u8) -> i16

Performs the << operation.

impl Shl<u8> for i32

type Output = i32

The resulting type after applying the << operator.

fn shl(self, other: u8) -> i32

Performs the << operation.

impl Shl<u8> for i64

type Output = i64

The resulting type after applying the << operator.

fn shl(self, other: u8) -> i64

Performs the << operation.

impl Shl<u8> for i8

type Output = i8

The resulting type after applying the << operator.

fn shl(self, other: u8) -> i8

Performs the << operation.

impl Shl<u8> for isize

type Output = isize

The resulting type after applying the << operator.

fn shl(self, other: u8) -> isize

Performs the << operation.

impl Shl<u8> for u128

type Output = u128

The resulting type after applying the << operator.

fn shl(self, other: u8) -> u128

Performs the << operation.

impl Shl<u8> for u16

type Output = u16

The resulting type after applying the << operator.

fn shl(self, other: u8) -> u16

Performs the << operation.

impl Shl<u8> for u32

type Output = u32

The resulting type after applying the << operator.

fn shl(self, other: u8) -> u32

Performs the << operation.

impl Shl<u8> for u64

type Output = u64

The resulting type after applying the << operator.

fn shl(self, other: u8) -> u64

Performs the << operation.

impl Shl<u8> for usize

type Output = usize

The resulting type after applying the << operator.

fn shl(self, other: u8) -> usize

Performs the << operation.

impl Shl<usize> for &u8

type Output = <u8 as Shl<usize>>::Output

The resulting type after applying the << operator.

fn shl(self, other: usize) -> <u8 as Shl<usize>>::Output

Performs the << operation.

impl Shl<usize> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: usize) -> u8

Performs the << operation.

impl Shl for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: u8) -> u8

Performs the << operation.

impl ShlAssign<&i128> for u8

fn shl_assign(&mut self, other: &i128)

Performs the <<= operation.

impl ShlAssign<&i16> for u8

fn shl_assign(&mut self, other: &i16)

Performs the <<= operation.

impl ShlAssign<&i32> for u8

fn shl_assign(&mut self, other: &i32)

Performs the <<= operation.

impl ShlAssign<&i64> for u8

fn shl_assign(&mut self, other: &i64)

Performs the <<= operation.

impl ShlAssign<&i8> for u8

fn shl_assign(&mut self, other: &i8)

Performs the <<= operation.

impl ShlAssign<&isize> for u8

fn shl_assign(&mut self, other: &isize)

Performs the <<= operation.

impl ShlAssign<&u128> for u8

fn shl_assign(&mut self, other: &u128)

Performs the <<= operation.

impl ShlAssign<&u16> for u8

fn shl_assign(&mut self, other: &u16)

Performs the <<= operation.

impl ShlAssign<&u32> for u8

fn shl_assign(&mut self, other: &u32)

Performs the <<= operation.

impl ShlAssign<&u64> for u8

fn shl_assign(&mut self, other: &u64)

Performs the <<= operation.

impl ShlAssign<&u8> for i128

fn shl_assign(&mut self, other: &u8)

Performs the <<= operation.

impl ShlAssign<&u8> for i16

fn shl_assign(&mut self, other: &u8)

Performs the <<= operation.

impl ShlAssign<&u8> for i32

fn shl_assign(&mut self, other: &u8)

Performs the <<= operation.

impl ShlAssign<&u8> for i64

fn shl_assign(&mut self, other: &u8)

Performs the <<= operation.

impl ShlAssign<&u8> for i8

fn shl_assign(&mut self, other: &u8)

Performs the <<= operation.

impl ShlAssign<&u8> for isize

fn shl_assign(&mut self, other: &u8)

Performs the <<= operation.

impl ShlAssign<&u8> for u128

fn shl_assign(&mut self, other: &u8)

Performs the <<= operation.

impl ShlAssign<&u8> for u16

fn shl_assign(&mut self, other: &u8)

Performs the <<= operation.

impl ShlAssign<&u8> for u32

fn shl_assign(&mut self, other: &u8)

Performs the <<= operation.

impl ShlAssign<&u8> for u64

fn shl_assign(&mut self, other: &u8)

Performs the <<= operation.

impl ShlAssign<&u8> for u8

fn shl_assign(&mut self, other: &u8)

Performs the <<= operation.

impl ShlAssign<&u8> for usize

fn shl_assign(&mut self, other: &u8)

Performs the <<= operation.

impl ShlAssign<&usize> for u8

fn shl_assign(&mut self, other: &usize)

Performs the <<= operation.

impl ShlAssign<i128> for u8

fn shl_assign(&mut self, other: i128)

Performs the <<= operation.

impl ShlAssign<i16> for u8

fn shl_assign(&mut self, other: i16)

Performs the <<= operation.

impl ShlAssign<i32> for u8

fn shl_assign(&mut self, other: i32)

Performs the <<= operation.

impl ShlAssign<i64> for u8

fn shl_assign(&mut self, other: i64)

Performs the <<= operation.

impl ShlAssign<i8> for u8

fn shl_assign(&mut self, other: i8)

Performs the <<= operation.

impl ShlAssign<isize> for u8

fn shl_assign(&mut self, other: isize)

Performs the <<= operation.

impl ShlAssign<u128> for u8

fn shl_assign(&mut self, other: u128)

Performs the <<= operation.

impl ShlAssign<u16> for u8

fn shl_assign(&mut self, other: u16)

Performs the <<= operation.

impl ShlAssign<u32> for u8

fn shl_assign(&mut self, other: u32)

Performs the <<= operation.

impl ShlAssign<u64> for u8

fn shl_assign(&mut self, other: u64)

Performs the <<= operation.

impl ShlAssign<u8> for i128

fn shl_assign(&mut self, other: u8)

Performs the <<= operation.

impl ShlAssign<u8> for i16

fn shl_assign(&mut self, other: u8)

Performs the <<= operation.

impl ShlAssign<u8> for i32

fn shl_assign(&mut self, other: u8)

Performs the <<= operation.

impl ShlAssign<u8> for i64

fn shl_assign(&mut self, other: u8)

Performs the <<= operation.

impl ShlAssign<u8> for i8

fn shl_assign(&mut self, other: u8)

Performs the <<= operation.

impl ShlAssign<u8> for isize

fn shl_assign(&mut self, other: u8)

Performs the <<= operation.

impl ShlAssign<u8> for u128

fn shl_assign(&mut self, other: u8)

Performs the <<= operation.

impl ShlAssign<u8> for u16

fn shl_assign(&mut self, other: u8)

Performs the <<= operation.

impl ShlAssign<u8> for u32

fn shl_assign(&mut self, other: u8)

Performs the <<= operation.

impl ShlAssign<u8> for u64

fn shl_assign(&mut self, other: u8)

Performs the <<= operation.

impl ShlAssign<u8> for usize

fn shl_assign(&mut self, other: u8)

Performs the <<= operation.

impl ShlAssign<usize> for u8

fn shl_assign(&mut self, other: usize)

Performs the <<= operation.

impl ShlAssign for u8

fn shl_assign(&mut self, other: u8)

Performs the <<= operation.

impl Shr<&i128> for &u8

type Output = <u8 as Shr<i128>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &i128) -> <u8 as Shr<i128>>::Output

Performs the >> operation.

impl Shr<&i128> for u8

type Output = <u8 as Shr<i128>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &i128) -> <u8 as Shr<i128>>::Output

Performs the >> operation.

impl Shr<&i16> for &u8

type Output = <u8 as Shr<i16>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &i16) -> <u8 as Shr<i16>>::Output

Performs the >> operation.

impl Shr<&i16> for u8

type Output = <u8 as Shr<i16>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &i16) -> <u8 as Shr<i16>>::Output

Performs the >> operation.

impl Shr<&i32> for &u8

type Output = <u8 as Shr<i32>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &i32) -> <u8 as Shr<i32>>::Output

Performs the >> operation.

impl Shr<&i32> for u8

type Output = <u8 as Shr<i32>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &i32) -> <u8 as Shr<i32>>::Output

Performs the >> operation.

impl Shr<&i64> for &u8

type Output = <u8 as Shr<i64>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &i64) -> <u8 as Shr<i64>>::Output

Performs the >> operation.

impl Shr<&i64> for u8

type Output = <u8 as Shr<i64>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &i64) -> <u8 as Shr<i64>>::Output

Performs the >> operation.

impl Shr<&i8> for &u8

type Output = <u8 as Shr<i8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &i8) -> <u8 as Shr<i8>>::Output

Performs the >> operation.

impl Shr<&i8> for u8

type Output = <u8 as Shr<i8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &i8) -> <u8 as Shr<i8>>::Output

Performs the >> operation.

impl Shr<&isize> for &u8

type Output = <u8 as Shr<isize>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &isize) -> <u8 as Shr<isize>>::Output

Performs the >> operation.

impl Shr<&isize> for u8

type Output = <u8 as Shr<isize>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &isize) -> <u8 as Shr<isize>>::Output

Performs the >> operation.

impl Shr<&u128> for &u8

type Output = <u8 as Shr<u128>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u128) -> <u8 as Shr<u128>>::Output

Performs the >> operation.

impl Shr<&u128> for u8

type Output = <u8 as Shr<u128>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u128) -> <u8 as Shr<u128>>::Output

Performs the >> operation.

impl Shr<&u16> for &u8

type Output = <u8 as Shr<u16>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u16) -> <u8 as Shr<u16>>::Output

Performs the >> operation.

impl Shr<&u16> for u8

type Output = <u8 as Shr<u16>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u16) -> <u8 as Shr<u16>>::Output

Performs the >> operation.

impl Shr<&u32> for &u8

type Output = <u8 as Shr<u32>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u32) -> <u8 as Shr<u32>>::Output

Performs the >> operation.

impl Shr<&u32> for u8

type Output = <u8 as Shr<u32>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u32) -> <u8 as Shr<u32>>::Output

Performs the >> operation.

impl Shr<&u64> for &u8

type Output = <u8 as Shr<u64>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u64) -> <u8 as Shr<u64>>::Output

Performs the >> operation.

impl Shr<&u64> for u8

type Output = <u8 as Shr<u64>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u64) -> <u8 as Shr<u64>>::Output

Performs the >> operation.

impl<'lhs, const N: usize> Shr<&u8> for &'lhs Simd<u8, N>

where LaneCount<N>: SupportedLaneCount,

Available on non-crate feature ferrocene_certified only.

type Output = Simd<u8, N>

The resulting type after applying the >> operator.

fn shr(self, rhs: &u8) -> Self::Output

Performs the >> operation.

impl Shr<&u8> for &i128

type Output = <i128 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <i128 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for &i16

type Output = <i16 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <i16 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for &i32

type Output = <i32 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <i32 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for &i64

type Output = <i64 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <i64 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for &i8

type Output = <i8 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <i8 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for &isize

type Output = <isize as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <isize as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for &u128

type Output = <u128 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <u128 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for &u16

type Output = <u16 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <u16 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for &u32

type Output = <u32 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <u32 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for &u64

type Output = <u64 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <u64 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for &u8

type Output = <u8 as Shr>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <u8 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for &usize

type Output = <usize as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <usize as Shr<u8>>::Output

Performs the >> operation.

impl<const N: usize> Shr<&u8> for Simd<u8, N>

where LaneCount<N>: SupportedLaneCount,

Available on non-crate feature ferrocene_certified only.

type Output = Simd<u8, N>

The resulting type after applying the >> operator.

fn shr(self, rhs: &u8) -> Self::Output

Performs the >> operation.

impl Shr<&u8> for i128

type Output = <i128 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <i128 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for i16

type Output = <i16 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <i16 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for i32

type Output = <i32 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <i32 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for i64

type Output = <i64 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <i64 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for i8

type Output = <i8 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <i8 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for isize

type Output = <isize as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <isize as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for u128

type Output = <u128 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <u128 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for u16

type Output = <u16 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <u16 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for u32

type Output = <u32 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <u32 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for u64

type Output = <u64 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <u64 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for u8

type Output = <u8 as Shr>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <u8 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&u8> for usize

type Output = <usize as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &u8) -> <usize as Shr<u8>>::Output

Performs the >> operation.

impl Shr<&usize> for &u8

type Output = <u8 as Shr<usize>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &usize) -> <u8 as Shr<usize>>::Output

Performs the >> operation.

impl Shr<&usize> for u8

type Output = <u8 as Shr<usize>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &usize) -> <u8 as Shr<usize>>::Output

Performs the >> operation.

impl Shr<i128> for &u8

type Output = <u8 as Shr<i128>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: i128) -> <u8 as Shr<i128>>::Output

Performs the >> operation.

impl Shr<i128> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: i128) -> u8

Performs the >> operation.

impl Shr<i16> for &u8

type Output = <u8 as Shr<i16>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: i16) -> <u8 as Shr<i16>>::Output

Performs the >> operation.

impl Shr<i16> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: i16) -> u8

Performs the >> operation.

impl Shr<i32> for &u8

type Output = <u8 as Shr<i32>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: i32) -> <u8 as Shr<i32>>::Output

Performs the >> operation.

impl Shr<i32> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: i32) -> u8

Performs the >> operation.

impl Shr<i64> for &u8

type Output = <u8 as Shr<i64>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: i64) -> <u8 as Shr<i64>>::Output

Performs the >> operation.

impl Shr<i64> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: i64) -> u8

Performs the >> operation.

impl Shr<i8> for &u8

type Output = <u8 as Shr<i8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: i8) -> <u8 as Shr<i8>>::Output

Performs the >> operation.

impl Shr<i8> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: i8) -> u8

Performs the >> operation.

impl Shr<isize> for &u8

type Output = <u8 as Shr<isize>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: isize) -> <u8 as Shr<isize>>::Output

Performs the >> operation.

impl Shr<isize> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: isize) -> u8

Performs the >> operation.

impl Shr<u128> for &u8

type Output = <u8 as Shr<u128>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u128) -> <u8 as Shr<u128>>::Output

Performs the >> operation.

impl Shr<u128> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: u128) -> u8

Performs the >> operation.

impl Shr<u16> for &u8

type Output = <u8 as Shr<u16>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u16) -> <u8 as Shr<u16>>::Output

Performs the >> operation.

impl Shr<u16> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: u16) -> u8

Performs the >> operation.

impl Shr<u32> for &u8

type Output = <u8 as Shr<u32>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u32) -> <u8 as Shr<u32>>::Output

Performs the >> operation.

impl Shr<u32> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: u32) -> u8

Performs the >> operation.

impl Shr<u64> for &u8

type Output = <u8 as Shr<u64>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u64) -> <u8 as Shr<u64>>::Output

Performs the >> operation.

impl Shr<u64> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: u64) -> u8

Performs the >> operation.

impl<'lhs, const N: usize> Shr<u8> for &'lhs Simd<u8, N>

where LaneCount<N>: SupportedLaneCount,

Available on non-crate feature ferrocene_certified only.

type Output = Simd<u8, N>

The resulting type after applying the >> operator.

fn shr(self, rhs: u8) -> Self::Output

Performs the >> operation.

impl Shr<u8> for &i128

type Output = <i128 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> <i128 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<u8> for &i16

type Output = <i16 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> <i16 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<u8> for &i32

type Output = <i32 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> <i32 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<u8> for &i64

type Output = <i64 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> <i64 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<u8> for &i8

type Output = <i8 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> <i8 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<u8> for &isize

type Output = <isize as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> <isize as Shr<u8>>::Output

Performs the >> operation.

impl Shr<u8> for &u128

type Output = <u128 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> <u128 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<u8> for &u16

type Output = <u16 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> <u16 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<u8> for &u32

type Output = <u32 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> <u32 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<u8> for &u64

type Output = <u64 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> <u64 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<u8> for &u8

type Output = <u8 as Shr>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> <u8 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<u8> for &usize

type Output = <usize as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> <usize as Shr<u8>>::Output

Performs the >> operation.

impl<const N: usize> Shr<u8> for Simd<u8, N>

where LaneCount<N>: SupportedLaneCount,

Available on non-crate feature ferrocene_certified only.

type Output = Simd<u8, N>

The resulting type after applying the >> operator.

fn shr(self, rhs: u8) -> Self::Output

Performs the >> operation.

impl Shr<u8> for i128

type Output = i128

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> i128

Performs the >> operation.

impl Shr<u8> for i16

type Output = i16

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> i16

Performs the >> operation.

impl Shr<u8> for i32

type Output = i32

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> i32

Performs the >> operation.

impl Shr<u8> for i64

type Output = i64

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> i64

Performs the >> operation.

impl Shr<u8> for i8

type Output = i8

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> i8

Performs the >> operation.

impl Shr<u8> for isize

type Output = isize

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> isize

Performs the >> operation.

impl Shr<u8> for u128

type Output = u128

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> u128

Performs the >> operation.

impl Shr<u8> for u16

type Output = u16

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> u16

Performs the >> operation.

impl Shr<u8> for u32

type Output = u32

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> u32

Performs the >> operation.

impl Shr<u8> for u64

type Output = u64

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> u64

Performs the >> operation.

impl Shr<u8> for usize

type Output = usize

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> usize

Performs the >> operation.

impl Shr<usize> for &u8

type Output = <u8 as Shr<usize>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: usize) -> <u8 as Shr<usize>>::Output

Performs the >> operation.

impl Shr<usize> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: usize) -> u8

Performs the >> operation.

impl Shr for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> u8

Performs the >> operation.

impl ShrAssign<&i128> for u8

fn shr_assign(&mut self, other: &i128)

Performs the >>= operation.

impl ShrAssign<&i16> for u8

fn shr_assign(&mut self, other: &i16)

Performs the >>= operation.

impl ShrAssign<&i32> for u8

fn shr_assign(&mut self, other: &i32)

Performs the >>= operation.

impl ShrAssign<&i64> for u8

fn shr_assign(&mut self, other: &i64)

Performs the >>= operation.

impl ShrAssign<&i8> for u8

fn shr_assign(&mut self, other: &i8)

Performs the >>= operation.

impl ShrAssign<&isize> for u8

fn shr_assign(&mut self, other: &isize)

Performs the >>= operation.

impl ShrAssign<&u128> for u8

fn shr_assign(&mut self, other: &u128)

Performs the >>= operation.

impl ShrAssign<&u16> for u8

fn shr_assign(&mut self, other: &u16)

Performs the >>= operation.

impl ShrAssign<&u32> for u8

fn shr_assign(&mut self, other: &u32)

Performs the >>= operation.

impl ShrAssign<&u64> for u8

fn shr_assign(&mut self, other: &u64)

Performs the >>= operation.

impl ShrAssign<&u8> for i128

fn shr_assign(&mut self, other: &u8)

Performs the >>= operation.

impl ShrAssign<&u8> for i16

fn shr_assign(&mut self, other: &u8)

Performs the >>= operation.

impl ShrAssign<&u8> for i32

fn shr_assign(&mut self, other: &u8)

Performs the >>= operation.

impl ShrAssign<&u8> for i64

fn shr_assign(&mut self, other: &u8)

Performs the >>= operation.

impl ShrAssign<&u8> for i8

fn shr_assign(&mut self, other: &u8)

Performs the >>= operation.

impl ShrAssign<&u8> for isize

fn shr_assign(&mut self, other: &u8)

Performs the >>= operation.

impl ShrAssign<&u8> for u128

fn shr_assign(&mut self, other: &u8)

Performs the >>= operation.

impl ShrAssign<&u8> for u16

fn shr_assign(&mut self, other: &u8)

Performs the >>= operation.

impl ShrAssign<&u8> for u32

fn shr_assign(&mut self, other: &u8)

Performs the >>= operation.

impl ShrAssign<&u8> for u64

fn shr_assign(&mut self, other: &u8)

Performs the >>= operation.

impl ShrAssign<&u8> for u8

fn shr_assign(&mut self, other: &u8)

Performs the >>= operation.

impl ShrAssign<&u8> for usize

fn shr_assign(&mut self, other: &u8)

Performs the >>= operation.

impl ShrAssign<&usize> for u8

fn shr_assign(&mut self, other: &usize)

Performs the >>= operation.

impl ShrAssign<i128> for u8

fn shr_assign(&mut self, other: i128)

Performs the >>= operation.

impl ShrAssign<i16> for u8

fn shr_assign(&mut self, other: i16)

Performs the >>= operation.

impl ShrAssign<i32> for u8

fn shr_assign(&mut self, other: i32)

Performs the >>= operation.

impl ShrAssign<i64> for u8

fn shr_assign(&mut self, other: i64)

Performs the >>= operation.

impl ShrAssign<i8> for u8

fn shr_assign(&mut self, other: i8)

Performs the >>= operation.

impl ShrAssign<isize> for u8

fn shr_assign(&mut self, other: isize)

Performs the >>= operation.

impl ShrAssign<u128> for u8

fn shr_assign(&mut self, other: u128)

Performs the >>= operation.

impl ShrAssign<u16> for u8

fn shr_assign(&mut self, other: u16)

Performs the >>= operation.

impl ShrAssign<u32> for u8

fn shr_assign(&mut self, other: u32)

Performs the >>= operation.

impl ShrAssign<u64> for u8

fn shr_assign(&mut self, other: u64)

Performs the >>= operation.

impl ShrAssign<u8> for i128

fn shr_assign(&mut self, other: u8)

Performs the >>= operation.

impl ShrAssign<u8> for i16

fn shr_assign(&mut self, other: u8)

Performs the >>= operation.

impl ShrAssign<u8> for i32

fn shr_assign(&mut self, other: u8)

Performs the >>= operation.

impl ShrAssign<u8> for i64

fn shr_assign(&mut self, other: u8)

Performs the >>= operation.

impl ShrAssign<u8> for i8

fn shr_assign(&mut self, other: u8)

Performs the >>= operation.

impl ShrAssign<u8> for isize

fn shr_assign(&mut self, other: u8)

Performs the >>= operation.

impl ShrAssign<u8> for u128

fn shr_assign(&mut self, other: u8)

Performs the >>= operation.

impl ShrAssign<u8> for u16

fn shr_assign(&mut self, other: u8)

Performs the >>= operation.

impl ShrAssign<u8> for u32

fn shr_assign(&mut self, other: u8)

Performs the >>= operation.

impl ShrAssign<u8> for u64

fn shr_assign(&mut self, other: u8)

Performs the >>= operation.

impl ShrAssign<u8> for usize

fn shr_assign(&mut self, other: u8)

Performs the >>= operation.

impl ShrAssign<usize> for u8

fn shr_assign(&mut self, other: usize)

Performs the >>= operation.

impl ShrAssign for u8

fn shr_assign(&mut self, other: u8)

Performs the >>= operation.

impl SimdElement for u8

Available on non-crate feature ferrocene_certified only.

type Mask = i8

🔬This is a nightly-only experimental API. (portable_simd #86656)

The mask element type corresponding to this element type.

impl Step for u8

Available on non-crate feature ferrocene_certified only.

fn forward(start: Self, n: usize) -> Self

🔬This is a nightly-only experimental API. (step_trait #42168)

Returns the value that would be obtained by taking the successor of self count times.

fn backward(start: Self, n: usize) -> Self

🔬This is a nightly-only experimental API. (step_trait #42168)

Returns the value that would be obtained by taking the predecessor of self count times.

unsafe fn forward_unchecked(start: Self, n: usize) -> Self

🔬This is a nightly-only experimental API. (step_trait #42168)

Returns the value that would be obtained by taking the successor of self count times.

unsafe fn backward_unchecked(start: Self, n: usize) -> Self

🔬This is a nightly-only experimental API. (step_trait #42168)

Returns the value that would be obtained by taking the predecessor of self count times.

fn steps_between(start: &Self, end: &Self) -> (usize, Option<usize>)

🔬This is a nightly-only experimental API. (step_trait #42168)

Returns the bounds on the number of successor steps required to get from start to end like Iterator::size_hint().

fn forward_checked(start: Self, n: usize) -> Option<Self>

🔬This is a nightly-only experimental API. (step_trait #42168)

Returns the value that would be obtained by taking the successor of self count times.

fn backward_checked(start: Self, n: usize) -> Option<Self>

🔬This is a nightly-only experimental API. (step_trait #42168)

Returns the value that would be obtained by taking the predecessor of self count times.

impl Sub<&u8> for &u8

type Output = <u8 as Sub>::Output

The resulting type after applying the - operator.

fn sub(self, other: &u8) -> <u8 as Sub<u8>>::Output

Performs the - operation.

impl Sub<&u8> for u8

type Output = <u8 as Sub>::Output

The resulting type after applying the - operator.

fn sub(self, other: &u8) -> <u8 as Sub<u8>>::Output

Performs the - operation.

impl Sub<u8> for &u8

type Output = <u8 as Sub>::Output

The resulting type after applying the - operator.

fn sub(self, other: u8) -> <u8 as Sub<u8>>::Output

Performs the - operation.

impl Sub for u8

type Output = u8

The resulting type after applying the - operator.

fn sub(self, other: u8) -> u8

Performs the - operation.

impl SubAssign<&u8> for Saturating<u8>

Available on non-crate feature ferrocene_certified only.

fn sub_assign(&mut self, other: &u8)

Performs the -= operation.

impl SubAssign<&u8> for Wrapping<u8>

Available on non-crate feature ferrocene_certified only.

fn sub_assign(&mut self, other: &u8)

Performs the -= operation.

impl SubAssign<&u8> for u8

fn sub_assign(&mut self, other: &u8)

Performs the -= operation.

impl SubAssign<u8> for Saturating<u8>

Available on non-crate feature ferrocene_certified only.

fn sub_assign(&mut self, other: u8)

Performs the -= operation.

impl SubAssign<u8> for Wrapping<u8>

Available on non-crate feature ferrocene_certified only.

fn sub_assign(&mut self, other: u8)

Performs the -= operation.

impl SubAssign for u8

fn sub_assign(&mut self, other: u8)

Performs the -= operation.

impl<'a> Sum<&'a u8> for u8

Available on non-crate feature ferrocene_certified only.

fn sum<I: Iterator<Item = &'a Self>>(iter: I) -> Self

Takes an iterator and generates Self from the elements by “summing up” the items.

impl Sum for u8

Available on non-crate feature ferrocene_certified only.

fn sum<I: Iterator<Item = Self>>(iter: I) -> Self

Takes an iterator and generates Self from the elements by “summing up” the items.

impl TryFrom<char> for u8

Available on non-crate feature ferrocene_certified only.

Maps a char with code point in U+0000..=U+00FF to a byte in 0x00..=0xFF with same value, failing if the code point is greater than U+00FF.

See impl From<u8> for char for details on the encoding.

fn try_from(c: char) -> Result<u8, Self::Error>

Tries to convert a char into a u8.

Examples

let a = 'ÿ'; // U+00FF
let b = 'Ā'; // U+0100
assert_eq!(u8::try_from(a), Ok(0xFF_u8));
assert!(u8::try_from(b).is_err());

type Error = TryFromCharError

The type returned in the event of a conversion error.

impl TryFrom<i128> for u8

Available on non-crate feature ferrocene_certified only.

fn try_from(u: i128) -> Result<Self, Self::Error>

Tries to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<i16> for u8

Available on non-crate feature ferrocene_certified only.

fn try_from(u: i16) -> Result<Self, Self::Error>

Tries to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<i32> for u8

Available on non-crate feature ferrocene_certified only.

fn try_from(u: i32) -> Result<Self, Self::Error>

Tries to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<i64> for u8

Available on non-crate feature ferrocene_certified only.

fn try_from(u: i64) -> Result<Self, Self::Error>

Tries to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<i8> for u8

Available on non-crate feature ferrocene_certified only.

fn try_from(u: i8) -> Result<Self, Self::Error>

Tries to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<isize> for u8

Available on non-crate feature ferrocene_certified only.

fn try_from(u: isize) -> Result<Self, Self::Error>

Tries to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<u128> for u8

Available on non-crate feature ferrocene_certified only.

fn try_from(u: u128) -> Result<Self, Self::Error>

Tries to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<u16> for u8

Available on non-crate feature ferrocene_certified only.

fn try_from(u: u16) -> Result<Self, Self::Error>

Tries to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<u32> for u8

Available on non-crate feature ferrocene_certified only.

fn try_from(u: u32) -> Result<Self, Self::Error>

Tries to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<u64> for u8

Available on non-crate feature ferrocene_certified only.

fn try_from(u: u64) -> Result<Self, Self::Error>

Tries to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<u8> for NonZero<u8>

Available on non-crate feature ferrocene_certified only.

fn try_from(value: u8) -> Result<Self, Self::Error>

Attempts to convert u8 to NonZero<u8>.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<u8> for i8

Available on non-crate feature ferrocene_certified only.

fn try_from(u: u8) -> Result<Self, Self::Error>

Tries to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl TryFrom<usize> for u8

Available on non-crate feature ferrocene_certified only.

fn try_from(u: usize) -> Result<Self, Self::Error>

Tries to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

type Error = TryFromIntError

The type returned in the event of a conversion error.

impl UpperExp for u8

Available on (WebAssembly) and non-crate feature ferrocene_certified only.

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl UpperHex for u8

Available on non-crate feature ferrocene_certified only.

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Format unsigned integers in the radix.

impl ConstParamTy_ for u8

impl Copy for u8

impl Eq for u8

impl FloatToInt<u8> for f128

Available on non-crate feature ferrocene_certified only.

impl FloatToInt<u8> for f16

Available on non-crate feature ferrocene_certified only.

impl FloatToInt<u8> for f32

Available on non-crate feature ferrocene_certified only.

impl FloatToInt<u8> for f64

Available on non-crate feature ferrocene_certified only.

impl SimdCast for u8

Available on non-crate feature ferrocene_certified only.

impl StructuralPartialEq for u8

impl TrustedStep for u8

Available on non-crate feature ferrocene_certified only.

impl UseCloned for u8

impl ZeroablePrimitive for u8

Available on non-crate feature ferrocene_certified only.