_mm512_mask_fmadd_pd
Classification
AVX-512, Arithmetic, CPUID Test: AVX512F
Header File
Instruction
VFMADD132PD zmm {k}, zmm, zmm
Synopsis
_mm512_mask_fmadd_pd(__m512d a, __mmask8 k, __m512d b, __m512d c);
Description
Multiply packed double-precision (64-bit) floating-point elements in "a" and "b", add the intermediate result to packed elements in "c", 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