Intel® C++ Compiler Classic Developer Guide and Reference
Visible to Intel only — GUID: GUID-70F647BE-BE86-4F6E-A815-A3D597EE4F56
Visible to Intel only — GUID: GUID-70F647BE-BE86-4F6E-A815-A3D597EE4F56
_mm_invsqrt_pd, _mm256_invsqrt_pd
Calculates inverse square root value. Vector variant of invsqrt(x) function for a 128-bit/256-bit vector argument of float64 values.
Syntax
extern __m128d _mm_invsqrt_pd(__m128d v1); |
extern __m256d _mm256_invsqrt_pd(__m256d v1); |
Arguments
v1 |
vector with float64 values |
Description
Calculates the inverse square root of vector v1 elements.
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.