_mm512_mask3_fnmsub_pd
Classification
KNC, Arithmetic, CPUID Test: KNCNI
Header File
immintrin.h
Instruction
VFNMSUB132PD zmm {k}, zmm, zmm
Synopsis
 _mm512_mask3_fnmsub_pd(__m512d a, __m512d b, __m512d c, __mmask8 k);
Description
Multiply packed double-precision (64-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 "c" when the corresponding mask bit is not set).
Operation
FOR j := 0 to 7
	i := j*64
	IF k[j]
		dst[i+63:i] := -(a[i+63:i] * b[i+63:i]) - c[i+63:i]
	ELSE
		dst[i+63:i] := c[i+63:i]
	FI
ENDFOR	
dst[MAX:512] := 0