Trait Select 

pub trait Select<T> {
    // Required method
    fn select(self, true_values: T, false_values: T) -> T;
}

🔬This is a nightly-only experimental API. (portable_simd #86656)

Choose elements from two vectors using a mask.

For each element in the mask, choose the corresponding element from true_values if that element mask is true, and false_values if that element mask is false.

If the mask is u64, it’s treated as a bitmask with the least significant bit corresponding to the first element.

Examples

Selecting values from Simd

let a = Simd::from_array([0, 1, 2, 3]);
let b = Simd::from_array([4, 5, 6, 7]);
let mask = Mask::<i32, 4>::from_array([true, false, false, true]);
let c = mask.select(a, b);
assert_eq!(c.to_array(), [0, 5, 6, 3]);

Selecting values from Mask

let a = Mask::<i32, 4>::from_array([true, true, false, false]);
let b = Mask::<i32, 4>::from_array([false, false, true, true]);
let mask = Mask::<i32, 4>::from_array([true, false, false, true]);
let c = mask.select(a, b);
assert_eq!(c.to_array(), [true, false, true, false]);

Selecting with a bitmask

let a = Mask::<i32, 4>::from_array([true, true, false, false]);
let b = Mask::<i32, 4>::from_array([false, false, true, true]);
let mask = 0b1001;
let c = mask.select(a, b);
assert_eq!(c.to_array(), [true, false, true, false]);

Required Methods

fn select(self, true_values: T, false_values: T) -> T

🔬This is a nightly-only experimental API. (portable_simd #86656)

This item is validated for IEC 61508 (SIL 2) and ISO 26262 (ASIL B).

Choose elements

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<T, U, const N: usize> Select<Mask<T, N>> for Mask<U, N>

where T: MaskElement, U: MaskElement,

impl<T, U, const N: usize> Select<Simd<T, N>> for Mask<U, N>

where T: SimdElement, U: MaskElement,

impl<T, const N: usize> Select<Mask<T, N>> for u64

where T: MaskElement,

impl<T, const N: usize> Select<Simd<T, N>> for u64

where T: SimdElement,