Wrap FFTW. More...
#include <FFT.h>
Public Member Functions | |
| bool | Backward (double *aReDataIn=NULL, double *aImDataIn=NULL) |
| FFT-backwards a complex data vector. | |
| bool | Forward (double *aReDataIn=NULL, double *aImDataIn=NULL) |
| FFT-forwards a complex data vector. | |
| double * | GetIm (void) |
| Returns the imaginary part vector after the last FFT. | |
| double * | GetNorm (void) |
| Returns the norm vector after the last FFT. | |
| double * | GetNorm2 (void) |
| Returns the squared norm vector after the last FFT. | |
| double * | GetPhase (void) |
| Returns the phase after the last FFT. | |
| double * | GetRe (void) |
| Returns the real part vector after the last FFT. | |
Constructors and destructors | |
| fft (const int asize, const string aplan="FFTW_ESTIMATE") | |
| Constructor of the fft class. | |
| virtual | ~fft (void) |
| Destructor of the fft class. | |
Wrap FFTW.
| fft::fft | ( | const int | asize, | |
| const string | aplan = "FFTW_ESTIMATE" | |||
| ) |
Constructor of the fft class.
A FFT plan is contructed for a given input size. Several plan are supported: "FFTW_ESTIMATE", "FFTW_MEASURE" and "FFTW_PATIENT".
| asize | FFT length | |
| aplan | FFT plan |
| fft::~fft | ( | void | ) | [virtual] |
Destructor of the fft class.
| bool fft::Backward | ( | double * | aReDataIn = NULL, |
|
| double * | aImDataIn = NULL | |||
| ) |
FFT-backwards a complex data vector.
The input data vector is defined by 2 arrays for the real and imaginary parts. A pointer to NULL can be used to set vectors to 0.0. These vectors should have the size of the FFT length defined in fft(): NO size check is performed!
| aReDataIn | data vector real part | |
| aImDataIn | data vector imaginary part |
| bool fft::Forward | ( | double * | aReDataIn = NULL, |
|
| double * | aImDataIn = NULL | |||
| ) |
FFT-forwards a complex data vector.
The input data vector is defined by 2 arrays for the real and imaginary parts. A pointer to NULL can be used to set vectors to 0.0. These vectors should have the size of the FFT length defined in fft(): NO size check is performed!
| aReDataIn | data vector real part | |
| aImDataIn | data vector imaginary part |
| double * fft::GetIm | ( | void | ) |
Returns the imaginary part vector after the last FFT.
The vector has the size of the FFT length. NULL is returned if this function fails. The user is in charge of deleting the returned array.
| double * fft::GetNorm | ( | void | ) |
Returns the norm vector after the last FFT.
The vector has the size of the FFT length. NULL is returned if this function fails. The user is in charge of deleting the returned array.
| double * fft::GetNorm2 | ( | void | ) |
Returns the squared norm vector after the last FFT.
The vector has the size of the FFT length. NULL is returned if this function fails. The user is in charge of deleting the returned array.
| double * fft::GetPhase | ( | void | ) |
Returns the phase after the last FFT.
The vector has the size of the FFT length. NULL is returned if this function fails. The user is in charge of deleting the returned array.
| double * fft::GetRe | ( | void | ) |
Returns the real part vector after the last FFT.
The vector has the size of the FFT length. NULL is returned if this function fails. The user is in charge of deleting the returned array.
1.6.1
