core::arch::x86_64

Function _mm_mask_roundscale_sd

pub unsafe fn _mm_mask_roundscale_sd(
    src: __m128d,
    k: __mmask8,
    a: __m128d,
    b: __m128d,
    const IMM8: i32,
) -> __m128d

🔬This is a nightly-only experimental API. (stdarch_x86_avx512 #111137)

Available on (x86 or x86-64) and target feature avx512f and x86-64 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 writemask k (the element is copied from src 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:\

_MM_FROUND_TO_NEAREST_INT : round to nearest
_MM_FROUND_TO_NEG_INF : round down
_MM_FROUND_TO_POS_INF : round up
_MM_FROUND_TO_ZERO : truncate
_MM_FROUND_CUR_DIRECTION : use MXCSR.RC - see _MM_SET_ROUNDING_MODE

Intel’s documentation

Function _mm_mask_roundscale_sdCopy item path

Function _mm_mask_roundscale_sd