core::arch::x86_64

Function _mm512_mask_fmul_round_pch

source 
pub unsafe fn _mm512_mask_fmul_round_pch(
    src: __m512h,
    k: __mmask16,
    a: __m512h,
    b: __m512h,
    const ROUNDING: i32,
) -> __m512h
🔬This is a nightly-only experimental API. (stdarch_x86_avx512_f16 #127213)
Available on (x86 or x86-64) and target feature avx512fp16 and x86-64 only.
Expand description

Multiply packed complex numbers in a and b, and store the results in dst using writemask k (the element is copied from src when corresponding mask bit is not set). Each complex number is composed of two adjacent half-precision (16-bit) floating-point elements, which defines the complex number complex = vec.fp16[0] + i * vec.fp16[1]. Rounding is done according to the rounding parameter, which can be one of:

(_MM_FROUND_TO_NEAREST_INT |_MM_FROUND_NO_EXC) // round to nearest, and suppress exceptions
(_MM_FROUND_TO_NEG_INF |_MM_FROUND_NO_EXC)     // round down, and suppress exceptions
(_MM_FROUND_TO_POS_INF |_MM_FROUND_NO_EXC)     // round up, and suppress exceptions
(_MM_FROUND_TO_ZERO |_MM_FROUND_NO_EXC)        // truncate, and suppress exceptions
_MM_FROUND_CUR_DIRECTION

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