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| Function | Complementary exponential function |
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| Syntax C/C++ | #include <VFmath.h>
int VF_expc( fVector Y, fVector X, ui size );
int VFx_expc( fVector Y, fVector X, ui size, float A, float B, float C ); |
| C++ VecObj | #include <OptiVec.h>
int vector<T>::expc( const vector<T>& X );
int vector<T>::x_expc( const vector<T>& X, const T& A, const T& B, const T& C ); |
| Pascal/Delphi | uses VFmath;
function VF_expc( Y, X:fVector; size:UIntSize ): IntBool;
function VFx_expc( Y, X:fVector; size:UIntSize; A, B, C:Single ): IntBool; |
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| CUDA function C/C++ | #include <cudaVFmath.h>
int cudaVF_expc( fVector d_Y, fVector d_X, ui size );
int cudaVFx_expc( fVector d_Y, fVector d_X, ui size, float A, float B, float C );
int cusdVFx_expc( fVector d_Y, fVector d_X, ui size, float *d_A, float *d_B, float *d_C );
int VFcu_expc( fVector h_Y, fVector h_X, ui size );
int VFxcu_expc( fVector h_Y, fVector h_X, ui size, float A, float B, float C );
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| CUDA function Pascal/Delphi | uses VFmath;
function cudaVF_expc( d_Y, d_X:fVector; size:UIntSize ): IntBool;
function cudaVFx_expc( d_Y, d_X:fVector; size:UIntSize; A, B, C:Single ): IntBool;
function cusdVFx_expc( d_Y, d_X:fVector; size:UIntSize; d_A, d_B, d_C:PSingle ): IntBool;
function VFcu_expc( h_Y, h_X:fVector; size:UIntSize ): IntBool;
function VFxcu_expc( h_Y, h_X:fVector; size:UIntSize; A, B, C:Single ): IntBool;
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| Description | simple versions: Yi = 1 - exp( Xi )
expanded versions: Yi = C * (1 - exp [A*Xi + B ])
The difference between 1.0 and the exponential function of Xi is calculated. Note that the expc function is directly available from the 80x87 coprocessor in high accuracy; in fact, it is the exponential function itself that is internally calculated via the expc function. The expc function is often encountered in the natural sciences for the description of decay and growth processes. |
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| Error handling | OVERFLOW errors lead to a default result of ±HUGE_VAL. |
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| Return value | FALSE (0), if no error occurred, otherwise TRUE (non-zero). |
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