_mm_mask_cmpeq_epu64_mask
Classification
AVX-512, Compare, CPUID Test: AVX512F
Header File
Instruction
VPCMPUQ k {k}, xmm, xmm
Synopsis
_mm_mask_cmpeq_epu64_mask(__mmask8 k1, __m128i a, __m128i b);
Description
Compare packed unsigned 64-bit integers 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 1
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:2] := 0