Corrected UInt_t <-> Int_t conversion
[u/mrichter/AliRoot.git] / TPC / AliTPCMonitorFFT.h
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48265b32 1#ifndef ALITPCMONITORFFT_H
2#define ALITPCMONITORFFT_H
3
4/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * See cxx source for full Copyright notice */
6
7/* $Id$ */
8
9
10////////////////////////////////////////////////////////////////////////
fb3305d1 11////
12//// AliTPCMonitorFFT class
13////
14//// Wrapper class to perform Fast Fourier Transformations
15//// Code based on Gnu Scientific Library
16//// See documentation of gsl for further details
17////
18//// Author: Stefan Kniege, IKF, Frankfurt
19////
20////
48265b32 21/////////////////////////////////////////////////////////////////////////
22
23
24
25#include <iostream>
26#include "TNamed.h"
27#include <math.h>
28#define REAL(a,stride,i) ((a)[2*(stride)*(i)])
29#define IMAG(a,stride,i) ((a)[2*(stride)*(i)+1])
30using namespace std;
31
32class AliTPCMonitorFFT : public TNamed {
33 public:
34
35 AliTPCMonitorFFT();
36 ~AliTPCMonitorFFT();
37
38 Int_t ComplexRadix2ForwardWrap( Double_t* data, Int_t stride, size_t n );
39 Int_t ComplexRadix2BackwardWrap( Double_t* data, Int_t stride, size_t n );
40 Int_t ComplexRadix2InverseWrap( Double_t* data, Int_t stride, size_t n );
41 Int_t ComplexRadix2TransformWrap(Double_t* data, Int_t stride, size_t n, Int_t sign );
fb3305d1 42 Int_t ComplexBitReverseOrderWrap(Double_t* data, Int_t stride, size_t n, Int_t logn) const ;
43 Int_t FFTBinaryLogn(size_t n) const ;
48265b32 44
45 private:
46
47 ClassDef(AliTPCMonitorFFT,1);
48};
49#endif
50