Developer Guide and Reference

Contents

_mm_atan_pd
,
_mm256_atan_pd

Calculates inverse tangent value. Vector variant of atan(x) function for a 128-bit/256-bit vector argument of float64 values.

Syntax

extern __m128d _mm_atan_pd(__m128d v1);
extern __m256d _mm256_atan_pd(__m256d v1);
Arguments
v1
vector with float64 values
Description
Calculates the arc tangent of vector
v1
elements. In effect, the tangent of each resulting element value is the value of the corresponding
v1
vector element.
Returns
128-bit/256-bit vector with result of the operation.
Many routines in the
svml
library are more optimized for Intel® microprocessors than for non-Intel microprocessors.