Intel® C++ Compiler Classic Developer Guide and Reference
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Visible to Intel only — GUID: GUID-8FD6D056-E98A-42A2-9632-46CD60406EBA
Visible to Intel only — GUID: GUID-8FD6D056-E98A-42A2-9632-46CD60406EBA
_mm_erf_ps, _mm256_erf_ps
Calculates error function. Vector variant of erf(x) function for a 128-bit/256-bit vector argument of float32 values.
Syntax
extern __m128 _mm_erf_ps(__m128 v1); |
extern __m256 _mm256_erf_ps(__m256 v1); |
Arguments
v1 |
vector with float32 values |
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 Short Vector Math Library (SVML) are more optimized for Intel® microprocessors than for non-Intel microprocessors.