# _mm256_set1_pd

Initializes 256-bit vector with scalar double-precision floating point values. No corresponding Intel® AVX instruction.

## Syntax

extern __m256d _mm256_set1_pd(double);

## Arguments

double | a float64 value to be initialized into the 256-bit vector; there is one double parameter to initialize each float64 vector element

## Description

Initializes a 256-bit vector with scalar double-precision floating point values (float64 values) as specified by the double parameter.

## Returns

A float64 vector with all elements set to the specified scalar double-precision floating point value.

Parent topic: Intrinsics for Miscellaneous Operations