SPUC::cfft< CPLX > Class Template Reference
[Miscellaneous functions]

General Purpose C++ complex FFT Transform. More...

#include <cplxfft.h>

Collaboration diagram for SPUC::cfft< CPLX >:

[legend]List of all members.

Public Member Functions
	cfft (int size, double scalef1=0.5, double scalef2=1.0, double scalei1=1.0, double scalei2=1.0)
	~cfft ()
void	fft (CPLX *buf)
	perform forward fft on buffer
void	ifft (CPLX *buf)
	perform reverse fft on buffer
int	length () const
void	hermitian (CPLX *buf)

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Detailed Description

template<class CPLX>
class SPUC::cfft< CPLX >

General Purpose C++ complex FFT Transform.

This is a general-purpose C++ complex FFT transform class. it is defined as a template over a complex type. For instance, if using gnu gcc, the complex type is complex<double> And you declare the cfft class as cfft<complex<double>>

The underlying CPLX type requires: CPLX() operator = , CPLX(CPLX const&) CPLX(double,double) [used on cos/sin] CPLX operator*( CPLX , double ) CPLX conj(CPLX const &); [conjugate] ComPlex::operator @ (CPLX , CPLX ) [ where @ =* + - ]

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Constructor & Destructor Documentation

template<class CPLX> SPUC::cfft< CPLX >::cfft (  int  size, double  scalef1 = 0.5, double  scalef2 = 1.0, double  scalei1 = 1.0, double  scalei2 = 1.0 )

Here is the call graph for this function:

template<class CPLX> SPUC::cfft< CPLX >::~cfft (   )

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Member Function Documentation

template<class CPLX> void SPUC::cfft< CPLX >::fft (  CPLX *  buf  )  [inline]

perform forward fft on buffer

template<class CPLX> void SPUC::cfft< CPLX >::hermitian (  CPLX *  buf  )

used to fill in last half of complex spectrum of real signal when the first half is already there.

template<class CPLX> void SPUC::cfft< CPLX >::ifft (  CPLX *  buf  )  [inline]

perform reverse fft on buffer

template<class CPLX> int SPUC::cfft< CPLX >::length (   )  const [inline]

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The documentation for this class was generated from the following file:

• generic/cplxfft.h

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