Intel® C++ Compiler Classic Developer Guide and Reference

ID 767249
Date 12/16/2022
Public

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<span class='option'> _mm256_unpackhi_epi8/16/32/64</span>

Unpacks and interleaves the high-order data elements of the source vector with the high-order data elements in the destination vector. The corresponding Intel® AVX2 instruction is VPUNPCKHBW, VPUNPCKHWD, VPUNPCKHDQ, or VPUNPCKHQDQ.

Syntax

extern __m256i _mm256_unpackhi_epi8(__m256i a, __m256i b);

extern __m256i _mm256_unpackhi_epi16(__m256i a, __m256i b);

extern __m256i _mm256_unpackhi_epi32(__m256i a, __m256i b);

extern __m256i _mm256_unpackhi_epi64(__m256i a, __m256i b);

Arguments

a

integer source operand used for the operation

b

integer source operand used for the operation

Description

Unpacks and interleaves the high-order signed or unsigned data elements (bytes, words, doublewords, and quadwords) of the source vector and the high-order signed or unsigned data elements (bytes, words, doublewords, and quadwords) in the destination vector. The low-order data elements are ignored.

Returns

Result of the interleave operation