Definition at line 67 of file TFFTReal.h.

Public Member Functions
	TFFTReal ()
	default More...

	TFFTReal (Int_t n, Bool_t inPlace=kFALSE)
	For 1d transforms n here is the physical size of the transform (see FFTW manual for more details) More...

	TFFTReal (Int_t ndim, Int_t *n, Bool_t inPlace=kFALSE)
	For multidimensional transforms 1st parameter is the # of dimensions, 2nd is the sizes (physical) of the transform in each dimension. More...

virtual	~TFFTReal ()
	clean-up More...

virtual Int_t *	GetN () const

virtual Int_t	GetNdim () const

virtual void	GetPointComplex (const Int_t *ipoint, Double_t &re, Double_t &im, Bool_t fromInput=kFALSE) const
	Only for input of HC2R and output of R2HC and for 1d. More...

virtual void	GetPointComplex (Int_t ipoint, Double_t &re, Double_t &im, Bool_t fromInput=kFALSE) const
	Only for input of HC2R and output of R2HC. More...

virtual Double_t	GetPointReal (Int_t ipoint, Bool_t fromInput=kFALSE) const
	For 1d tranforms. Returns point #ipoint. More...

virtual Double_t	GetPointReal (const Int_t *ipoint, Bool_t fromInput=kFALSE) const
	For multidim.transforms. Returns point #ipoint. More...

virtual void	GetPoints (Double_t *data, Bool_t fromInput=kFALSE) const
	Copies the output (or input) points into the provided array, that should be big enough. More...

virtual void	GetPointsComplex (Double_t , Double_t , Bool_t) const

virtual void	GetPointsComplex (Double_t *, Bool_t) const

virtual Double_t *	GetPointsReal (Bool_t fromInput=kFALSE) const
	Returns the output (or input) array. More...

virtual Int_t	GetSign () const

virtual Int_t	GetSize () const

virtual Option_t *	GetTransformFlag () const

virtual Option_t *	GetType () const
	Returns the type of the transform. More...

virtual void	Init (Option_t flags, Int_t sign, const Int_t kind)
	Creates the fftw-plan. More...

virtual Bool_t	IsInplace () const

virtual void	SetPoint (Int_t ipoint, Double_t re, Double_t im=0)

virtual void	SetPoint (const Int_t *ipoint, Double_t re, Double_t)
	Since multidimensional R2HC and HC2R transforms are not supported, third parameter is dummy. More...

virtual void	SetPointComplex (Int_t, TComplex &)

virtual void	SetPoints (const Double_t *data)
	Sets all points. More...

virtual void	SetPointsComplex (const Double_t , const Double_t )

virtual void	Transform ()
	Computes the transform, specified in Init() function. More...

Protected Member Functions
UInt_t	MapFlag (Option_t *flag)
	allowed options: "ES" - FFTW_ESTIMATE "M" - FFTW_MEASURE "P" - FFTW_PATIENT "EX" - FFTW_EXHAUSTIVE More...

Int_t	MapOptions (const Int_t *kind)
	transfers the r2r_kind parameters to fftw type More...

Protected Attributes
TString	fFlags

void *	fIn

void *	fKind

Int_t *	fN

Int_t	fNdim

void *	fOut

void *	fPlan

Int_t	fTotalSize

#include <TFFTReal.h>

Inheritance diagram for TFFTReal:

[legend]

Constructor & Destructor Documentation

◆ TFFTReal() [1/3]

TFFTReal::TFFTReal ( )

default

Definition at line 67 of file TFFTReal.cxx.

◆ TFFTReal() [2/3]

TFFTReal::TFFTReal	(	Int_t	n,
		Bool_t	inPlace = `kFALSE`
	)

For 1d transforms n here is the physical size of the transform (see FFTW manual for more details)

Definition at line 82 of file TFFTReal.cxx.

◆ TFFTReal() [3/3]

TFFTReal::TFFTReal	(	Int_t	ndim,
		Int_t *	n,
		Bool_t	inPlace = `kFALSE`
	)

For multidimensional transforms 1st parameter is the # of dimensions, 2nd is the sizes (physical) of the transform in each dimension.

Definition at line 101 of file TFFTReal.cxx.

◆ ~TFFTReal()

TFFTReal::~TFFTReal ( )

virtual

clean-up

Definition at line 122 of file TFFTReal.cxx.

Member Function Documentation

◆ GetN()

virtual Int_t* TFFTReal::GetN ( ) const

inlinevirtual

Definition at line 90 of file TFFTReal.h.

◆ GetNdim()

virtual Int_t TFFTReal::GetNdim ( ) const

inlinevirtual

Definition at line 91 of file TFFTReal.h.

◆ GetPointComplex() [1/2]

void TFFTReal::GetPointComplex	(	const Int_t *	ipoint,
		Double_t &	re,
		Double_t &	im,
		Bool_t	fromInput = `kFALSE`
	)		const

virtual

Only for input of HC2R and output of R2HC and for 1d.

Definition at line 274 of file TFFTReal.cxx.

◆ GetPointComplex() [2/2]

void TFFTReal::GetPointComplex	(	Int_t	ipoint,
		Double_t &	re,
		Double_t &	im,
		Bool_t	fromInput = `kFALSE`
	)		const

virtual

Only for input of HC2R and output of R2HC.

Definition at line 254 of file TFFTReal.cxx.

◆ GetPointReal() [1/2]

Double_t TFFTReal::GetPointReal	(	Int_t	ipoint,
		Bool_t	fromInput = `kFALSE`
	)		const

virtual

For 1d tranforms. Returns point #ipoint.

Definition at line 228 of file TFFTReal.cxx.

◆ GetPointReal() [2/2]

Double_t TFFTReal::GetPointReal	(	const Int_t *	ipoint,
		Bool_t	fromInput = `kFALSE`
	)		const

virtual

For multidim.transforms. Returns point #ipoint.

Definition at line 241 of file TFFTReal.cxx.

◆ GetPoints()

void TFFTReal::GetPoints	(	Double_t *	data,
		Bool_t	fromInput = `kFALSE`
	)		const

virtual

Copies the output (or input) points into the provided array, that should be big enough.

Definition at line 218 of file TFFTReal.cxx.

◆ GetPointsComplex() [1/2]

virtual void TFFTReal::GetPointsComplex	(	Double_t *	,
		Double_t *	,
		Bool_t
	)		const

inlinevirtual

Definition at line 105 of file TFFTReal.h.

◆ GetPointsComplex() [2/2]

virtual void TFFTReal::GetPointsComplex	(	Double_t *	,
		Bool_t
	)		const

inlinevirtual

Definition at line 106 of file TFFTReal.h.

◆ GetPointsReal()

Double_t * TFFTReal::GetPointsReal ( Bool_t fromInput = kFALSE ) const

virtual

Returns the output (or input) array.

Definition at line 282 of file TFFTReal.cxx.

◆ GetSign()

virtual Int_t TFFTReal::GetSign ( ) const

inlinevirtual

Definition at line 93 of file TFFTReal.h.

◆ GetSize()

virtual Int_t TFFTReal::GetSize ( ) const

inlinevirtual

Definition at line 89 of file TFFTReal.h.

◆ GetTransformFlag()

virtual Option_t* TFFTReal::GetTransformFlag ( ) const

inlinevirtual

Definition at line 94 of file TFFTReal.h.

◆ GetType()

Option_t * TFFTReal::GetType ( ) const

virtual

Returns the type of the transform.

Definition at line 202 of file TFFTReal.cxx.

◆ Init()

void TFFTReal::Init	(	Option_t *	flags,
		Int_t	sign,
		const Int_t *	kind
	)

virtual

Creates the fftw-plan.

NOTE: input and output arrays are overwritten during initialisation, so don't set any points, before running this function!!!!!

1st parameter: Possible flag_options: "ES" (from "estimate") - no time in preparing the transform, but probably sub-optimal performance "M" (from "measure") - some time spend in finding the optimal way to do the transform "P" (from "patient") - more time spend in finding the optimal way to do the transform "EX" (from "exhaustive") - the most optimal way is found This option should be chosen depending on how many transforms of the same size and type are going to be done. Planning is only done once, for the first transform of this size and type. 2nd parameter is dummy and doesn't need to be specified 3rd parameter- transform kind for each dimension 4 different kinds of sine and cosine transforms are available DCT-I - kind=0 DCT-II - kind=1 DCT-III - kind=2 DCT-IV - kind=3 DST-I - kind=4 DST-II - kind=5 DSTIII - kind=6 DSTIV - kind=7

Definition at line 168 of file TFFTReal.cxx.

◆ IsInplace()

virtual Bool_t TFFTReal::IsInplace ( ) const

inlinevirtual

Definition at line 95 of file TFFTReal.h.

◆ MapFlag()

UInt_t TFFTReal::MapFlag ( Option_t * flag )

protected

allowed options: "ES" - FFTW_ESTIMATE "M" - FFTW_MEASURE "P" - FFTW_PATIENT "EX" - FFTW_EXHAUSTIVE

Definition at line 394 of file TFFTReal.cxx.

◆ MapOptions()

Int_t TFFTReal::MapOptions ( const Int_t * kind )

protected

transfers the r2r_kind parameters to fftw type

Definition at line 348 of file TFFTReal.cxx.

◆ SetPoint() [1/2]

void TFFTReal::SetPoint	(	Int_t	ipoint,
		Double_t	re,
		Double_t	im = `0`
	)

virtual

Definition at line 302 of file TFFTReal.cxx.

◆ SetPoint() [2/2]

void TFFTReal::SetPoint	(	const Int_t *	ipoint,
		Double_t	re,
		Double_t
	)

virtual

Since multidimensional R2HC and HC2R transforms are not supported, third parameter is dummy.

Definition at line 324 of file TFFTReal.cxx.

◆ SetPointComplex()

virtual void TFFTReal::SetPointComplex	(	Int_t	,
		TComplex &
	)

inlinevirtual

Definition at line 111 of file TFFTReal.h.

◆ SetPoints()

void TFFTReal::SetPoints ( const Double_t * data )

virtual

Sets all points.

Definition at line 339 of file TFFTReal.cxx.

◆ SetPointsComplex()

virtual void TFFTReal::SetPointsComplex	(	const Double_t *	,
		const Double_t *
	)

inlinevirtual

Definition at line 112 of file TFFTReal.h.

◆ Transform()

void TFFTReal::Transform ( )

virtual

Computes the transform, specified in Init() function.

Definition at line 189 of file TFFTReal.cxx.

Member Data Documentation

◆ fFlags

TString TFFTReal::fFlags

protected

Definition at line 76 of file TFFTReal.h.

◆ fIn

void* TFFTReal::fIn

protected

Definition at line 69 of file TFFTReal.h.

◆ fKind

void* TFFTReal::fKind

protected

Definition at line 75 of file TFFTReal.h.

◆ fN

Int_t* TFFTReal::fN

protected

Definition at line 74 of file TFFTReal.h.

◆ fNdim

Int_t TFFTReal::fNdim

protected

Definition at line 72 of file TFFTReal.h.

◆ fOut

void* TFFTReal::fOut

protected

Definition at line 70 of file TFFTReal.h.

◆ fPlan

void* TFFTReal::fPlan

protected

Definition at line 71 of file TFFTReal.h.

◆ fTotalSize

Int_t TFFTReal::fTotalSize

protected

Definition at line 73 of file TFFTReal.h.

Libraries for TFFTReal:

[legend]

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

math/fftw/inc/TFFTReal.h
math/fftw/src/TFFTReal.cxx

Public Member Functions

Protected Member Functions

Protected Attributes

Constructor & Destructor Documentation

◆ TFFTReal() [1/3]

◆ TFFTReal() [2/3]

◆ TFFTReal() [3/3]

◆ ~TFFTReal()

Member Function Documentation

◆ GetN()

◆ GetNdim()

◆ GetPointComplex() [1/2]

◆ GetPointComplex() [2/2]

◆ GetPointReal() [1/2]

◆ GetPointReal() [2/2]

◆ GetPoints()

◆ GetPointsComplex() [1/2]

◆ GetPointsComplex() [2/2]

◆ GetPointsReal()

◆ GetSign()

◆ GetSize()

◆ GetTransformFlag()

◆ GetType()

◆ Init()

◆ IsInplace()

◆ MapFlag()

◆ MapOptions()

◆ SetPoint() [1/2]

◆ SetPoint() [2/2]

◆ SetPointComplex()

◆ SetPoints()

◆ SetPointsComplex()

◆ Transform()

Member Data Documentation

◆ fFlags

◆ fIn

◆ fKind

◆ fN

◆ fNdim

◆ fOut

◆ fPlan

◆ fTotalSize