_mm512_mask_fmsub_pd
Classification
KNC, Arithmetic, CPUID Test: KNCNI
Header File
Instruction
VFMSUB132PD zmm {k}, zmm, zmm
Synopsis
_mm512_mask_fmsub_pd(__m512d a, __mmask8 k, __m512d b, __m512d c);
Description
Multiply packed double-precision (64-bit) floating-point elements in "a" and "b", subtract packed elements in "c" from the intermediate result, and store the results in "dst" using writemask "k" (elements are copied from "a" 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] := a[i+63:i]
FI
ENDFOR
dst[MAX:512] := 0