add numerical recipes library
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309
lib/nr/cpp/other/nrutil_tnt.h
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309
lib/nr/cpp/other/nrutil_tnt.h
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#ifndef _NR_UTIL_H_
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#define _NR_UTIL_H_
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#include <string>
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#include <cmath>
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#include <complex>
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#include <iostream>
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using namespace std;
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typedef double DP;
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template<class T>
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inline const T SQR(const T a) {return a*a;}
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template<class T>
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inline const T MAX(const T &a, const T &b)
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{return b > a ? (b) : (a);}
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inline float MAX(const double &a, const float &b)
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{return b > a ? (b) : float(a);}
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inline float MAX(const float &a, const double &b)
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{return b > a ? float(b) : (a);}
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template<class T>
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inline const T MIN(const T &a, const T &b)
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{return b < a ? (b) : (a);}
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inline float MIN(const double &a, const float &b)
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{return b < a ? (b) : float(a);}
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inline float MIN(const float &a, const double &b)
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{return b < a ? float(b) : (a);}
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template<class T>
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inline const T SIGN(const T &a, const T &b)
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{return b >= 0 ? (a >= 0 ? a : -a) : (a >= 0 ? -a : a);}
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inline float SIGN(const float &a, const double &b)
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{return b >= 0 ? (a >= 0 ? a : -a) : (a >= 0 ? -a : a);}
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inline float SIGN(const double &a, const float &b)
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{return b >= 0 ? (a >= 0 ? a : -a) : (a >= 0 ? -a : a);}
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template<class T>
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inline void SWAP(T &a, T &b)
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{T dum=a; a=b; b=dum;}
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namespace NR {
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inline void nrerror(const string error_text)
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// Numerical Recipes standard error handler
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{
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cerr << "Numerical Recipes run-time error..." << endl;
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cerr << error_text << endl;
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cerr << "...now exiting to system..." << endl;
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exit(1);
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}
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}
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#include "tnt/tnt.h"
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#include "tnt/vec.h"
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#include "tnt/cmat.h"
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// TNT Wrapper File
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// This is the file that "joins" the TNT Vector<> and Matrix<> classes
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// to the NRVec and NRMat classes by the Wrapper Class Method
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// NRVec contains a Vector and a &Vector. All its constructors, except the
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// conversion constructor, create the Vector and point the &Vector to it.
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// The conversion constructor only points the &Vector. All operations
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// (size, subscript) are through the &Vector, which as a reference
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// (not pointer) has no indirection overhead.
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template<class T>
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class NRVec {
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private:
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TNT::Vector<T> myvec;
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TNT::Vector<T> &myref;
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public:
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NRVec<T>() : myvec(), myref(myvec) {}
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explicit NRVec<T>(const int n) : myvec(n), myref(myvec) {}
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NRVec<T>(const T &a, int n) : myvec(n,a), myref(myvec) {}
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NRVec<T>(const T *a, int n) : myvec(n,a), myref(myvec) {}
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NRVec<T>(TNT::Vector<T> &rhs) : myref(rhs) {}
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// conversion constructor makes a special NRVec pointing to Vector's data
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// this handles Vector actual args sent to NRVec formal args in functions
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NRVec(const NRVec<T>& rhs) : myvec(rhs.myref), myref(myvec) {}
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// copy constructor calls Vector copy constructor
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inline NRVec& operator=(const NRVec& rhs) { myref=rhs.myref; return *this;}
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// assignment operator calls Vector assignment operator
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inline NRVec& operator=(const T& rhs) { myvec=rhs; return *this;}
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// scalar assignment calls Vector assignment operator
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inline int size() const {return myref.size();}
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inline T & operator[](const int i) const {return myref[i];}
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// return element i
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inline operator TNT::Vector<T>() const {return myref;}
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// conversion operator to Vector
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// this handles NRVec function return types when used in Vector expressions
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~NRVec() {}
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};
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template <class T>
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class NRMat {
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private:
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TNT::Matrix<T> mymat;
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TNT::Matrix<T> &myref;
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public:
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NRMat() : mymat(), myref(mymat) {}
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NRMat(int n, int m) : mymat(n,m), myref(mymat) {}
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NRMat(const T& a, int n, int m) : mymat(n,m,a), myref(mymat) {}
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//Initialize to constant
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NRMat(const T* a, int n, int m) : mymat(n,m,a), myref(mymat) {}
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//Initialize to array
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NRMat<T>(TNT::Matrix<T> &rhs) : myref(rhs) {}
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// conversion constructor from Matrix
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NRMat(const NRMat& rhs) : mymat(rhs.myref), myref(mymat) {}
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// copy constructor
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inline NRMat& operator=(const NRMat& rhs) { myref=rhs.myref; return *this;}
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// assignment operator
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inline NRMat& operator=(const T& rhs) { mymat=rhs; return *this;}
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// scalar assignment calls Matrix assignment operator
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inline T* operator[](const int i) const {return myref[i];}
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//subscripting: pointer to row i
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//return type is whatever Matrix returns for a single [] dereference
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inline int nrows() const {return myref.num_rows();}
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inline int ncols() const {return myref.num_cols();}
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inline operator TNT::Matrix<T>() const {return myref;}
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// conversion operator to Matrix
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~NRMat() {}
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};
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template <class T>
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class NRMat3d {
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private:
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int nn;
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int mm;
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int kk;
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T ***v;
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public:
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NRMat3d();
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NRMat3d(int n, int m, int k);
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inline T** operator[](const int i); //subscripting: pointer to row i
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inline const T* const * operator[](const int i) const;
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inline int dim1() const;
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inline int dim2() const;
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inline int dim3() const;
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~NRMat3d();
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};
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template <class T>
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NRMat3d<T>::NRMat3d(): nn(0), mm(0), kk(0), v(0) {}
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template <class T>
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NRMat3d<T>::NRMat3d(int n, int m, int k) : nn(n), mm(m), kk(k), v(new T**[n])
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{
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int i,j;
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v[0] = new T*[n*m];
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v[0][0] = new T[n*m*k];
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for(j=1; j<m; j++)
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v[0][j] = v[0][j-1] + k;
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for(i=1; i<n; i++) {
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v[i] = v[i-1] + m;
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v[i][0] = v[i-1][0] + m*k;
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for(j=1; j<m; j++)
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v[i][j] = v[i][j-1] + k;
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}
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}
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template <class T>
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inline T** NRMat3d<T>::operator[](const int i) //subscripting: pointer to row i
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{
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return v[i];
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}
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template <class T>
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inline const T* const * NRMat3d<T>::operator[](const int i) const
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{
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return v[i];
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}
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template <class T>
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inline int NRMat3d<T>::dim1() const
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{
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return nn;
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}
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template <class T>
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inline int NRMat3d<T>::dim2() const
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{
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return mm;
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}
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template <class T>
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inline int NRMat3d<T>::dim3() const
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{
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return kk;
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}
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template <class T>
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NRMat3d<T>::~NRMat3d()
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{
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if (v != 0) {
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delete[] (v[0][0]);
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delete[] (v[0]);
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delete[] (v);
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}
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}
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//The next 3 classes are used in artihmetic coding, Huffman coding, and
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//wavelet transforms respectively. This is as good a place as any to put them!
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class arithcode {
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private:
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NRVec<unsigned long> *ilob_p,*iupb_p,*ncumfq_p;
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public:
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NRVec<unsigned long> &ilob,&iupb,&ncumfq;
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unsigned long jdif,nc,minint,nch,ncum,nrad;
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arithcode(unsigned long n1, unsigned long n2, unsigned long n3)
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: ilob_p(new NRVec<unsigned long>(n1)),
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iupb_p(new NRVec<unsigned long>(n2)),
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ncumfq_p(new NRVec<unsigned long>(n3)),
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ilob(*ilob_p),iupb(*iupb_p),ncumfq(*ncumfq_p) {}
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~arithcode() {
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if (ilob_p != 0) delete ilob_p;
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if (iupb_p != 0) delete iupb_p;
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if (ncumfq_p != 0) delete ncumfq_p;
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}
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};
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class huffcode {
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private:
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NRVec<unsigned long> *icod_p,*ncod_p,*left_p,*right_p;
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public:
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NRVec<unsigned long> &icod,&ncod,&left,&right;
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int nch,nodemax;
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huffcode(unsigned long n1, unsigned long n2, unsigned long n3,
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unsigned long n4) :
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icod_p(new NRVec<unsigned long>(n1)),
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ncod_p(new NRVec<unsigned long>(n2)),
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left_p(new NRVec<unsigned long>(n3)),
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right_p(new NRVec<unsigned long>(n4)),
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icod(*icod_p),ncod(*ncod_p),left(*left_p),right(*right_p) {}
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~huffcode() {
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if (icod_p != 0) delete icod_p;
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if (ncod_p != 0) delete ncod_p;
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if (left_p != 0) delete left_p;
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if (right_p != 0) delete right_p;
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}
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};
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class wavefilt {
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private:
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NRVec<DP> *cc_p,*cr_p;
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public:
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int ncof,ioff,joff;
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NRVec<DP> &cc,&cr;
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wavefilt() : cc(*cc_p),cr(*cr_p) {}
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wavefilt(const DP *a, const int n) : //initialize to array
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cc_p(new NRVec<DP>(n)),cr_p(new NRVec<DP>(n)),
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ncof(n),ioff(-(n >> 1)),joff(-(n >> 1)),cc(*cc_p),cr(*cr_p) {
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int i;
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for (i=0; i<n; i++)
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cc[i] = *a++;
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DP sig = -1.0;
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for (i=0; i<n; i++) {
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cr[n-1-i]=sig*cc[i];
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sig = -sig;
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}
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}
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~wavefilt() {
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if (cc_p != 0) delete cc_p;
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if (cr_p != 0) delete cr_p;
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}
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};
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//Overloaded complex operations to handle mixed float and double
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//This takes care of e.g. 1.0/z, z complex<float>
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inline const complex<float> operator+(const double &a,
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const complex<float> &b) { return float(a)+b; }
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inline const complex<float> operator+(const complex<float> &a,
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const double &b) { return a+float(b); }
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inline const complex<float> operator-(const double &a,
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const complex<float> &b) { return float(a)-b; }
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inline const complex<float> operator-(const complex<float> &a,
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const double &b) { return a-float(b); }
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inline const complex<float> operator*(const double &a,
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const complex<float> &b) { return float(a)*b; }
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inline const complex<float> operator*(const complex<float> &a,
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const double &b) { return a*float(b); }
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inline const complex<float> operator/(const double &a,
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const complex<float> &b) { return float(a)/b; }
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inline const complex<float> operator/(const complex<float> &a,
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const double &b) { return a/float(b); }
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//some compilers choke on pow(float,double) in single precision. also atan2
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inline float pow (float x, double y) {return pow(double(x),y);}
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inline float pow (double x, float y) {return pow(x,double(y));}
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inline float atan2 (float x, double y) {return atan2(double(x),y);}
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inline float atan2 (double x, float y) {return atan2(x,double(y));}
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#endif /* _NR_UTIL_H_ */
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