VF_acosVD_acosVE_acos
VCF_acosVCD_acosVCE_acos
VFx_acosVDx_acosVEx_acos
VCFx_acosVCDx_acosVCEx_acos
Functionarcus cosinus function
Syntax C/C++#include <VFmath.h>
int VF_acos( fVector Y, fVector X, ui size );
int VFx_acos( fVector Y, fVector X, ui size, float A, float B, float C );
C++ VecObj#include <OptiVec.h>
int vector<T>::acos( const vector<T>& X );
int vector<T>::x_acos( const vector<T>& X, const T& A, const T& B, const T& C );
Pascal/Delphiuses VFmath;
function VF_acos( Y, X:fVector; size:UIntSize ): IntBool;
function VFx_acos( Y, X:fVector; size:UIntSize; A, B, C:Single ): IntBool;
CUDA function C/C++#include <cudaVFmath.h>
int cudaVF_acos( fVector d_Y, fVector d_X, ui size );
int cudaVFx_acos( fVector d_Y, fVector d_X, ui size, float A, float B, float C );
int cusdVFx_acos( fVector d_Y, fVector d_X, ui size, float *d_A, float *d_B, float *d_C );
int VFcu_acos( fVector h_Y, fVector h_X, ui size );
int VFxcu_acos( fVector h_Y, fVector h_X, ui size, float A, float B, float C );
CUDA function Pascal/Delphiuses VFmath;
function cudaVF_acos( d_Y, d_X:fVector; size:UIntSize ): IntBool;
function cudaVFx_acos( d_Y, d_X:fVector; size:UIntSize; A, B, C:Single ): IntBool;
function cusdVFx_acos( d_Y, d_X:fVector; size:UIntSize; d_A, d_B, d_C:PSingle ): IntBool;
function VFcu_acos( h_Y, h_X:fVector; size:UIntSize ): IntBool;
function VFxcu_acos( h_Y, h_X:fVector; size:UIntSize; A, B, C:Single ): IntBool;
Descriptionnormal versions: Yi = arccos ( Xi )
expanded versions: Yi = C * arccos (A*Xi + B )
Error handlingReal versions: DOMAIN errors occur for arguments outside the range -1 <= Xi <= +1; the default result is NAN ("not-a-number").
The complex versions should be error-proof as long as the parameter C in the expanded versions is not already near the OVERFLOW limit; this very rare error is neither detected nor handled.
Return valueFALSE (0), if no error occurred, otherwise TRUE (non-zero).
See alsoVF_cos,   VF_asin,   VF_atan,   acos

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