Developer Guide and Reference

Contents

_mm256_unpacklo_epi8/16/32/64

Unpacks and interleaves the low-order data elements of the source vector with the low-order data elements in the destination vector. The corresponding Intel® AVX2 instruction is
VPUNPCKLBW
,
VPUNPCKLWD
,
VPUNPCKLDQ
, or
VPUNPCKLQDQ
.

Syntax

extern __m256i _mm256_unpacklo_epi8(__m256i a, __m256i b);
extern __m256i _mm256_unpacklo_epi16(__m256i a, __m256i b);
extern __m256i _mm256_unpacklo_epi32(__m256i a, __m256i b);
extern __m256i _mm256_unpacklo_epi64(__m256i a, __m256i b);
Arguments
a
integer source vector used for the operation
b
integer source vector used for the operation
Description
Unpacks and interleaves the low-order signed or unsigned data elements (bytes, words, doublewords, and quadwords) of the source vector and the low-order signed or unsigned data elements (bytes, words, doublewords, and quadwords) in the destination operand. The high-order data elements are ignored.
Returns
Result of the interleave operation