00001 #ifndef FORIA_FFT_HH 00002 #define FORIA_FFT_HH 00003 00004 #include "ForIA/IFourMomentum.hh" 00005 00006 #include <complex> 00007 #include <vector> 00008 00009 namespace ForIA{ 00010 00011 using std::vector; 00012 using std::complex; 00013 class IFourMomentum; 00014 00015 typedef complex<double> Coefficient; 00016 typedef vector<complex<double> > FTCoefficients; 00017 00018 class FFT { 00019 00020 public: 00021 00022 FFT(); 00023 00024 bool setGrid(const vector<double> &grid); 00025 00026 const FTCoefficients &coefficients() const; 00027 const vector<double> &magnitudes() const; 00028 const vector<double> &reals() const; 00029 const vector<double> &imaginaries() const; 00030 00031 // int nCoefficients() const; 00032 00033 private: 00034 00035 mutable bool m_freshMagnitudes; 00036 mutable bool m_freshReals; 00037 mutable bool m_freshImgs; 00038 00039 FTCoefficients m_coefficients; 00040 mutable vector<double> m_magnitudes; 00041 mutable vector<double> m_reals; 00042 mutable vector<double> m_imgs; 00043 00044 }; 00045 } 00046 00047 #endif
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