Function _mm_maskz_roundscale_sd

1.89.0 · Source
pub fn _mm_maskz_roundscale_sd(
    k: __mmask8,
    a: __m128d,
    b: __m128d,
    const IMM8: i32,
) -> __m128d
Available on (x86 or x86-64) and target feature avx512f and x86 only.
Expand description

Round the lower double-precision (64-bit) floating-point element in b to the number of fraction bits specified by imm8, store the result in the lower element of dst using zeromask k (the element is zeroed out when mask bit 0 is not set), and copy the upper element from a to the upper element of dst.
Rounding is done according to the imm8[2:0] parameter, which can be one of:\

Intel’s documentation