_mm512_mask_sub_round_pd
Classification
AVX-512, Arithmetic, CPUID Test: AVX512F
Header File
Instruction
VSUBPD zmm {k}, zmm, zmm {er}
Synopsis
_mm512_mask_sub_round_pd(__m512d src, __mmask8 k, __m512d a, __m512d b, int rounding);
Description
Subtract packed double-precision (64-bit) floating-point elements in "b" from packed double-precision (64-bit) floating-point elements in "a", and store the results in "dst" using writemask "k" (elements are copied from "src" when the corresponding mask bit is not set).
[round_note]
Operation
FOR j := 0 to 7
i := j*64
IF k[j]
dst[i+63:i] := a[i+63:i] - b[i+63:i]
ELSE
dst[i+63:i] := src[i+63:i]
FI
ENDFOR
dst[MAX:512] := 0