Developer Guide and Reference

Contents

_mm_erf_pd
,
_mm256_erf_pd

Calculates error function. Vector variant of erf(x) function for a 128-bit/256-bit vector argument of float64 values.

Syntax

extern __m128d _mm_erf_pd(__m128d v1);
extern __m256d _mm256_erf_pd(__m256d v1);
Arguments
v1
float64 vector used for the operation
Description
Calculates error function of v1 elements, which is defined as:
erf(x) = 2/sqrt(pi)* integral from 0 to x of exp(-t*t) dt
Returns
128-bit/256-bit vector with the result of the operation.
Many routines in the
svml
library are more optimized for Intel® microprocessors than for non-Intel microprocessors.