| VF_sincos2 | VD_sincos2 | VE_sincos2 |
| VFx_sincos2 | VDx_sincos2 | VEx_sinco2 |
| VFr_sincos2 | VDr_sincos2 | VEr_sincos2 |
| VFrx_sincos2 | VDrx_sincos2 | VErx_sinco2 |
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| Function | Square of the sine and of the cosine simultaneously |
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| Syntax C/C++ | #include <VFmath.h>
int VF_sincos2( fVector YSin2, fVector YCos2, fVector X, ui size );
int VFx_sincos2( fVector YSin2, fVector YCos2, fVector X, ui size, float A, float B, float C );
int VFr_sincos2( fVector YSin, fVector YCos, fVector X, ui size );
int VFrx_sincos2(fVector YSin, fVector YCos, fVector X, ui size, float A, float B, float C ); |
| C++ VecObj | #include <OptiVec.h>
int vector<T>::sincos2( vector<T> YCos2, const vector<T>& X );
int vector<T>::x_sincos2( vector<T> YCos2, const vector<T>& X, const T& A, const T& B, const T& C );
int vector<T>::r_sincos2( vector<T> YCos, const vector<T>& X );
int vector<T>::rx_sincos2( vector<T> YCos, const vector<T>& X, const T& A, const T& B, const T& C ); |
| Pascal/Delphi | uses VFmath;
function VF_sincos2( Sin, Cos, X:fVector; size:UIntSize ): IntBool;
function VFx_sincos2( Sin, Cos, X:fVector; size:UIntSize; A, B, C:Single ): IntBool;
function VFr_sincos2( Sin, Cos, X:fVector; size:UIntSize ): IntBool;
function VFrx_sincos2(Sin, Cos, X:fVector; size:UIntSize; A, B, C:Single ): IntBool; |
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| CUDA function C/C++ | #include <cudaVFmath.h>
int cudaVF_sincos2( fVector d_YSin, fVector d_YCos, fVector d_X, ui size );
int cudaVFx_sincos2( fVector d_YSin, fVector d_YCos, fVector d_X, ui size, float A, float B, float C );
int cusdVFx_sincos2( fVector d_YSin, fVector d_YCos, fVector d_X, ui size, float *d_A, float *d_B, float *d_C );
int VFcu_sincos2( fVector h_YSin, fVector h_YCos, fVector h_X, ui size );
int VFxcu_sincos2( fVector h_YSin, fVector h_YCos, fVector h_X, ui size, float A, float B, float C );
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| CUDA function Pascal/Delphi | uses VFmath;
function cudaVF_sincos2( d_YSin, d_YCos, d_X:fVector; size:UIntSize ): IntBool;
function cudaVFx_sincos2( d_YSin, d_YCos, d_X:fVector; size:UIntSize; A, B, C:Single ): IntBool;
function cusdVFx_sincos2( d_YSin, d_YCos, d_X:fVector; size:UIntSize; d_A, d_B, d_C:PSingle ): IntBool;
function VFcu_sincos2( h_YSin, h_YCos, h_X:fVector; size:UIntSize ): IntBool;
function VFxcu_sincos2( h_YSin, h_YCos, h_X:fVector; size:UIntSize; A, B, C:Single ): IntBool;
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| Description | simple versions:
YSin2i = sin2( Xi )
YCos2i = cos2( Xi )
expanded versions:
YSin2i = C * sin2( A*Xi+B )
YCos2i = C * cos2( A*Xi+B )
The squared sine and the squared cosine are calculated simultaneously, which is far more efficient than calculating them separately, if both of them are needed.
If, on the other hand, one can be sure that all Xi are within a reasonable range one can employ the faster reduced-range versions with the prefixes VFr_ and VFrx_. The range requirements for the reduced-range versions are:
64-bit: |Xi| < 232 (roughly 4.2*109)
32-bit: |Xi| ≤ 2p).
The reduced-range versions are not available for CUDA. |
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| Error handling | Precision errors lead to a result of 0.0 for the sin2 and of 1.0 for the cos2 (as if the input were 0.0) along with a non-zero return value, but are otherwise ignored; _matherr is not called. Other errors should not occur. |
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| Return value | FALSE (0), if no error occurred, otherwise TRUE (non-zero). |
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