Intel® C++ Compiler Classic Developer Guide and Reference

ID 767249
Date 12/16/2022
Public

A newer version of this document is available. Customers should click here to go to the newest version.

Document Table of Contents

<span class='option'> _mm256_hadd_pd</span>

Adds horizontal pairs of float64 elements of two vectors. The corresponding Intel® AVX instruction is VHADDPD.

Syntax

extern __m256d _mm256_hadd_pd(__m256d m1, __m256d m2);

Arguments

m1

float64 vector used for the operation

m2

float64 vector also used for the operation

Description

Performs a SIMD addition of adjacent (horizontal) pairs of double-precision floating-point elements (float64 elements) ins the first source vector m1 with adjacent pairs of float64 elements in the second source vector m2.

Returns

Result of the addition operation.