Function _mm_mask_roundscale_round_sd

pub unsafe fn _mm_mask_roundscale_round_sd<const IMM8: i32, const SAE: i32>(
    src: __m128d,
    k: u8,
    a: __m128d,
    b: __m128d,
) -> __m128d

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

Available on x86 only.

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

Exceptions can be suppressed by passing _MM_FROUND_NO_EXC in the sae parameter. Intel’s documentation