Intel® C++ Compiler Classic Developer Guide and Reference

ID 767249
Date 7/13/2023
Public
Document Table of Contents

_mm256_cvtepi32_epi64

Performs packed move with sign-extend on 32-bit signed integers to 64-bit integers. The corresponding Intel® AVX2 instruction is VPMOVSXDQ.

Syntax

extern __m256i _mm256_cvtepi32_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 32-bit [doubleword] integers in the low bytes of the source vector, s1, to 64-bit [quadword] integers and stored as packed signed quadword integers in the destination vector.

Returns

Result of the sign-extend operation.