_mm512_mask_cmpeq_pd_mask
Classification
AVX-512, Compare, CPUID Test: AVX512F
Header File
Instruction
VCMPPD k {k}, zmm, zmm, imm8
Synopsis
_mm512_mask_cmpeq_pd_mask(__mmask8 k1, __m512d a, __m512d b);
Description
Compare packed double-precision (64-bit) floating-point elements in "a" and "b" for equality, and store the results in mask vector "k" using zeromask "k1" (elements are zeroed out when the corresponding mask bit is not set).
Operation
FOR j := 0 to 7
i := j*64
IF k1[j]
k[j] := (a[i+63:i] == b[i+63:i]) ? 1 : 0
ELSE
k[j] := 0
FI
ENDFOR
k[MAX:8] := 0