wt::FFT Class Reference

Implements the generic FFT-plan interface for the FFTW3 library. More...

#include <fft_fftw3.hh>

Public Types
enum	Direction { FORWARD, BACKWARD }
	Specifies the possible FFT directions. More...

Public Member Functions
	FFT (CVector &in, CVector &out, Direction dir)
	Constructs the FFT of the input vector in and stores the result into out. More...
	FFT (CMatrix &in, CMatrix &out, Direction dir)
	Constructs the FFT of the column vectors in and stores the result into the columns of out. More...
	FFT (CVector &inout, Direction dir)
	Construts the in-place FFT of the vector inout. More...
	FFT (CMatrix &inout, Direction dir)
	Construts the in-place FFT of the column vectors inout. More...
virtual	~FFT ()
	Destructor. More...
void	exec ()
	Executes the FFT. More...

Static Public Member Functions
static void	exec (CVector &in, CVector &out, Direction dir)
	Executes the FFT of the input vector in and stores the result into out. More...
static void	exec (CMatrix &in, CMatrix &out, Direction dir)
	Executes the FFT of the input column vectors in and stores the result into the columns of out. More...
static void	exec (CVector &inout, Direction dir)
	Executes the in-place FFT of the vector inout. More...
static void	exec (CMatrix &inout, Direction dir)
	Executes the in-place FFT of the column vectors inout. More...
static size_t	roundUp (size_t N)
	Computes the smallest samples size larger than or equal to N for which the FFT can be computed fast. More...

Protected Attributes
fftw_plan	_plan
	The actual FFTW3 plan being executed. More...

Detailed Description

Implements the generic FFT-plan interface for the FFTW3 library.

Member Enumeration Documentation

enum wt::FFT::Direction

Specifies the possible FFT directions.

Enumerator
FORWARD	Forward transform.
BACKWARD	Backward transform.

Constructor & Destructor Documentation

FFT::FFT	(	CVector &	in,
		CVector &	out,
		Direction	dir
	)

Constructs the FFT of the input vector in and stores the result into out.

FFT::FFT	(	CMatrix &	in,
		CMatrix &	out,
		Direction	dir
	)

Constructs the FFT of the column vectors in and stores the result into the columns of out.

FFT::FFT	(	CVector &	inout,
		Direction	dir
	)

Construts the in-place FFT of the vector inout.

FFT::FFT	(	CMatrix &	inout,
		Direction	dir
	)

Construts the in-place FFT of the column vectors inout.

FFT::~FFT ( )

virtual

Destructor.

Member Function Documentation

void FFT::exec

(

)

Executes the FFT.

void FFT::exec ( CVector &  in, CVector &  out, Direction  dir  )

static

Executes the FFT of the input vector in and stores the result into out.

void FFT::exec ( CMatrix &  in, CMatrix &  out, Direction  dir  )

static

Executes the FFT of the input column vectors in and stores the result into the columns of out.

void FFT::exec ( CVector &  inout, Direction  dir  )

static

Executes the in-place FFT of the vector inout.

void FFT::exec ( CMatrix &  inout, Direction  dir  )

static

Executes the in-place FFT of the column vectors inout.

size_t FFT::roundUp ( size_t  N )

static

Computes the smallest samples size larger than or equal to N for which the FFT can be computed fast.

Member Data Documentation

fftw_plan wt::FFT::_plan

protected

The actual FFTW3 plan being executed.

---

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

• /Users/hannes/Uni/Wavelet/wt/lib/fft_fftw3.hh
• /Users/hannes/Uni/Wavelet/wt/lib/fft_fftw3.cc