RooMath

class RooMath

    private:

      static const char* cacheFileName() const
             static void initFastCERF(Int_t reBins = 800, Double_t reMin = -4.0, Double_t reMax = 4.0, Int_t imBins = 1000, Double_t imMin = -4.0, Double_t imMax = 6.0)
           static Bool_t loadCache()
             static void storeCache()

    public:

                        RooMath()
                        RooMath(const RooMath&)
                virtual ~RooMath()
            static void cacheCERF(Bool_t flag = kTRUE)
         static TClass* Class()
      static RooComplex ComplexErrFunc(Double_t re, Double_t im = 0)
      static RooComplex ComplexErrFunc(const RooComplex& z)
        static Double_t erf(Double_t x)
        static Double_t erfc(Double_t x)
      static RooComplex FastComplexErrFunc(const RooComplex& z)
        static Double_t FastComplexErrFuncIm(const RooComplex& z)
        static Double_t FastComplexErrFuncRe(const RooComplex& z)
        static Double_t interpolate(Double_t* yArr, Int_t nOrder, Double_t x)
        static Double_t interpolate(Double_t* xa, Double_t* ya, Int_t n, Double_t x)
        virtual TClass* IsA() const
      static RooComplex ITPComplexErrFunc(const RooComplex& z, Int_t nOrder)
        static Double_t ITPComplexErrFuncIm(const RooComplex& z, Int_t nOrder)
        static Double_t ITPComplexErrFuncRe(const RooComplex& z, Int_t nOrder)
               RooMath& operator=(const RooMath&)
           virtual void ShowMembers(TMemberInspector& insp, char* parent)
           virtual void Streamer(TBuffer& b)
                   void StreamerNVirtual(TBuffer& b)

Data Members

    private:

      static double** _imCerfArray  Lookup table for Im part of complex error function
      static double** _reCerfArray  Lookup table for Re part of complex error function
         static Int_t _reBins       Number of grid points in real dimension of CERF-LUT
      static Double_t _reMin        Low edge of real dimension of CERF-LUT
      static Double_t _reMax        High edge of real dimension of CERF-LUT
      static Double_t _reRange      Range in real dimension of CERF-LUT
      static Double_t _reStep       Grid spacing in real dimension of CERF-LUT
         static Int_t _imBins       Number of grid points in imaginary dimension of CERF-LUT    
      static Double_t _imMin        Low edge of imaginary dimension of CERF-LUT
      static Double_t _imMax        High edge of imaginary dimension of CERF-LUT
      static Double_t _imRange      Range in imaginary dimension of CERF-LUT
      static Double_t _imStep       Grid spacing in imaginary dimension of CERF-LUT
        static Bool_t _cacheTable   Switch activating use of file cache for CERF-LUT

Class Description

 Return CERNlib complex error function for Z(re,im)

 Return CERNlib complex error function

 This code is translated from the fortran version in the CERN mathlib.
 (see ftp://asisftp.cern.ch/cernlib/share/pro/src/mathlib/gen/c/cwerf64.F)

 Allocate and initialize lookup table for interpolated complex error function
 for given grid parameters

 Return complex error function interpolated from lookup tabel created
 by initFastCERF(). Interpolation is performed in Im and Re plane
 to specified order.

 Return real component of complex error function interpolated from
 lookup table created by initFastCERF(). Interpolation is performed in
 Im and Re plane to specified order. This functions is noticably faster
 than ITPComplexErrrFunc().re() because only the real lookup table
 is interpolated

 Return real component of complex error function interpolated from
 lookup table created by initFastCERF(). Interpolation is performed in
 Im and Re plane to specified order. This functions is noticably faster
 than ITPComplexErrrFunc().im() because only the imaginary lookup table
 is interpolated

 Interpolate array 'ya' with 'n' elements for 'x' (between 0 and 'n'-1)

 Interpolate array 'ya' with 'n' elements for 'xa'

 Load the complex error function lookup table from the cache file

 Store the complex error function lookup table in the cache file

 Construct and return the name of the complex error function cache file

Inline Functions

               void ~RooMath()
         RooComplex FastComplexErrFunc(const RooComplex& z)
           Double_t FastComplexErrFuncRe(const RooComplex& z)
           Double_t FastComplexErrFuncIm(const RooComplex& z)
               void cacheCERF(Bool_t flag = kTRUE)
            TClass* Class()
            TClass* IsA() const
               void ShowMembers(TMemberInspector& insp, char* parent)
               void Streamer(TBuffer& b)
               void StreamerNVirtual(TBuffer& b)
            RooMath RooMath()
            RooMath RooMath(const RooMath&)
           RooMath& operator=(const RooMath&)