# _mm256_blendv_ps

Performs conditional blend/merge of float32 vectors. The corresponding Intel® AVX instruction is VBLENDVPS.

## Syntax

extern __m256 _mm256_blendv_ps(__m256 m1, __m256 m2, __m256 mask);

## Arguments

m1 | float32 vector used for the operation
m2 | float32 vector also used for the operation
mask | float32 vector with the mask for the operation; defined such that the “1” in the most significant bits of an element indicate that corresponding elements of the second source vector are copied into the result, while “0” bits indicate that corresponding elements of the first source vector are copied into the result

## Description

Performs a conditional merge of eight packed single-precision floating point elements (float32 elements) of two vectors according to the most significant bits of the mask parameter.

The mask parameter defines a mask for the operation. The most significant bit of the corresponding single-precision floating-point elements in the mask determines whether the corresponding single-precision floating-point element in the resulting vector is copied from the second source or first source.

If the bit in the mask is “1” then the corresponding element of the second source vector is copied into the resulting vector. If the bit is “0” then the corresponding element of the first source vector is copied into the resulting vector. Thus a merging/blending of the elements of the two source vectors occurs when this intrinsic is used.

## Returns

Result of the blend operation.

Parent topic: Intrinsics for Blend and Conditional Merge Operations