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_mm256_cmpeq_epi8/16/32/64

Compares packed bytes/words/doublewords/quadwords of two source vectors. The corresponding Intel® AVX2 instruction is
VPCMPEQB
,
VPCMPEQW
,
VPCMPEQD
, or
VPCMPEQQ
.

Syntax

extern __m256i _mm256_cmpeq_epi8(__m256i s1, __m256i s2);
extern __m256i _mm256_cmpeq_epi16(__m256i s1, __m256i s2);
extern __m256i _mm256_cmpeq_epi32(__m256i s1, __m256i s2);
extern __m256i _mm256_cmpeq_epi64(__m256i s1, __m256i s2);
Arguments
s1
integer source vector used for the operation
s2
integer source vector used for the operation
Description
Performs a SIMD compare for equality of packed bytes, words, doublewords, or quadwords in source vectors
s1
and
s2
. If a pair of data elements is equal, the corresponding data element in the destination vector is set to all 1s. If a pair of data elements is unequal, the corresponding data element in the destination vector is set to 0.
Returns
Destination vector with result of the compare equal operation.