Performs packed move with sign-extend on 8-bit signed integers to 16/32/64-bit integers. The corresponding Intel® AVX2 instruction is VPMOVSXBW,VPMOVSXBD, or VPMOVSXBQ.

Syntax

extern __m256i _mm256_cvtepi8_epi16(__m128i s1);

extern __m256i _mm256_cvtepi8_epi32(__m128i s1);

extern __m256i _mm256_cvtepi8_epi64(__m128i s1);

Arguments

s1

128-bit integer source vector used for the operation

Description

Performs a packed move with sign-extend operation to convert 8-bit [byte] integers in the low bytes of the source vector, s1, to 16-bit [word], 32-bit [doubleword], or 64-bit [quadword] integers, which are stored as packed signed word/doubleword/quadword integers in the destination vector.

Returns

Result of the sign-extend operation.

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