Developer Guide and Reference

Contents

_mm256_blendv_pd

Performs conditional blend/merge of float64 vectors. The corresponding Intel® AVX instruction is
VBLENDVPD
.

Syntax

extern __m256d _mm256_blendv_pd(__m256d m1, __m256d m2, __m256d mask);
Arguments
m1
float64 vector used for the operation
m2
float64 vector also used for the operation
mask
float64 vector with mask for the operation
Description
Performs a conditional merge of four packed double-precision floating point elements (float64 elements) of two vectors according to the most significant bits of the
mask
parameter elements.
The
mask
parameter defines a mask for the operation. The most significant bit of the corresponding double-precision floating-point elements in the
mask
determines whether the corresponding double-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.