_mm_maskz_fmsub_sh
Classification
AVX-512, Arithmetic, CPUID Test: AVX512_FP16
Header File
immintrin.h
Instruction
VFMSUB132SH xmm {z}, xmm, xmm
Synopsis
 _mm_maskz_fmsub_sh(__mmask8 k, __m128h a, __m128h b, __m128h c);
Description
Multiply the lower half-precision (16-bit) floating-point elements in "a" and "b", and subtract the lower element in "c" from the intermediate result. 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 7 packed elements from "a" to the upper elements of "dst".
Operation
IF k[0]
	dst.fp16[0] := (a.fp16[0] * b.fp16[0]) - c.fp16[0]
ELSE
	dst.fp16[0] := 0
FI
dst[127:16] := a[127:16]
dst[MAX:128] := 0