_mm512_mask_fnmsub_round_ph
Classification
AVX-512, Arithmetic, CPUID Test: AVX512_FP16
Header File
immintrin.h
Instruction
VFNMSUB132PH zmm {k}, zmm, zmm {er}
Synopsis
 _mm512_mask_fnmsub_round_ph(__m512h a, __mmask32 k, __m512h b, __m512h c, const int rounding);
Description
Multiply packed half-precision (16-bit) floating-point elements in "a" and "b", subtract packed elements in "c" from the negated intermediate result, and store the results in "dst" using writemask "k" (elements are copied from "a" when the corresponding mask bit is not set). [round_note]
Operation
FOR j := 0 to 31
	IF k[j]
		dst.fp16[j] := -(a.fp16[j] * b.fp16[j]) - c.fp16[j]
	ELSE
		dst.fp16[j] := a.fp16[j]
	FI
ENDFOR
dst[MAX:512] := 0