[aa639ea] | 1 | /* |
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| 2 | * |
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| 3 | * Template Numerical Toolkit (TNT) |
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| 4 | * |
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| 5 | * Mathematical and Computational Sciences Division |
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| 6 | * National Institute of Technology, |
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| 7 | * Gaithersburg, MD USA |
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| 8 | * |
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| 9 | * |
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| 10 | * This software was developed at the National Institute of Standards and |
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| 11 | * Technology (NIST) by employees of the Federal Government in the course |
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| 12 | * of their official duties. Pursuant to title 17 Section 105 of the |
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| 13 | * United States Code, this software is not subject to copyright protection |
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| 14 | * and is in the public domain. NIST assumes no responsibility whatsoever for |
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| 15 | * its use by other parties, and makes no guarantees, expressed or implied, |
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| 16 | * about its quality, reliability, or any other characteristic. |
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| 17 | * |
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| 18 | */ |
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| 19 | |
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| 20 | |
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| 21 | |
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| 22 | #ifndef TNT_FORTRAN_ARRAY1D_H |
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| 23 | #define TNT_FORTRAN_ARRAY1D_H |
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| 24 | |
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| 25 | #include <cstdlib> |
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| 26 | #include <iostream> |
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| 27 | |
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| 28 | #ifdef TNT_BOUNDS_CHECK |
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| 29 | #include <assert.h> |
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| 30 | #endif |
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| 31 | |
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| 32 | |
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| 33 | #include "tnt_i_refvec.h" |
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| 34 | |
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| 35 | namespace TNT |
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| 36 | { |
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| 37 | |
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| 38 | template <class T> |
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| 39 | class Fortran_Array1D |
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| 40 | { |
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| 41 | |
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| 42 | private: |
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| 43 | |
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| 44 | i_refvec<T> v_; |
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| 45 | int n_; |
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| 46 | T* data_; /* this normally points to v_.begin(), but |
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| 47 | * could also point to a portion (subvector) |
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| 48 | * of v_. |
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| 49 | */ |
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| 50 | |
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| 51 | void initialize_(int n); |
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| 52 | void copy_(T* p, const T* q, int len) const; |
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| 53 | void set_(T* begin, T* end, const T& val); |
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| 54 | |
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| 55 | |
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| 56 | public: |
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| 57 | |
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| 58 | typedef T value_type; |
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| 59 | |
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| 60 | |
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| 61 | Fortran_Array1D(); |
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| 62 | explicit Fortran_Array1D(int n); |
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| 63 | Fortran_Array1D(int n, const T &a); |
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| 64 | Fortran_Array1D(int n, T *a); |
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| 65 | inline Fortran_Array1D(const Fortran_Array1D &A); |
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| 66 | inline Fortran_Array1D & operator=(const T &a); |
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| 67 | inline Fortran_Array1D & operator=(const Fortran_Array1D &A); |
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| 68 | inline Fortran_Array1D & ref(const Fortran_Array1D &A); |
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| 69 | Fortran_Array1D copy() const; |
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| 70 | Fortran_Array1D & inject(const Fortran_Array1D & A); |
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| 71 | inline T& operator()(int i); |
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| 72 | inline const T& operator()(int i) const; |
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| 73 | inline int dim1() const; |
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| 74 | inline int dim() const; |
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| 75 | ~Fortran_Array1D(); |
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| 76 | |
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| 77 | |
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| 78 | /* ... extended interface ... */ |
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| 79 | |
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| 80 | inline int ref_count() const; |
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| 81 | inline Fortran_Array1D<T> subarray(int i0, int i1); |
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| 82 | |
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| 83 | }; |
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| 84 | |
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| 85 | |
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| 86 | |
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| 87 | |
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| 88 | template <class T> |
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| 89 | Fortran_Array1D<T>::Fortran_Array1D() : v_(), n_(0), data_(0) {} |
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| 90 | |
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| 91 | template <class T> |
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| 92 | Fortran_Array1D<T>::Fortran_Array1D(const Fortran_Array1D<T> &A) : v_(A.v_), n_(A.n_), |
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| 93 | data_(A.data_) |
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| 94 | { |
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| 95 | #ifdef TNT_DEBUG |
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| 96 | std::cout << "Created Fortran_Array1D(const Fortran_Array1D<T> &A) \n"; |
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| 97 | #endif |
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| 98 | |
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| 99 | } |
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| 100 | |
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| 101 | |
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| 102 | template <class T> |
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| 103 | Fortran_Array1D<T>::Fortran_Array1D(int n) : v_(n), n_(n), data_(v_.begin()) |
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| 104 | { |
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| 105 | #ifdef TNT_DEBUG |
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| 106 | std::cout << "Created Fortran_Array1D(int n) \n"; |
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| 107 | #endif |
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| 108 | } |
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| 109 | |
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| 110 | template <class T> |
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| 111 | Fortran_Array1D<T>::Fortran_Array1D(int n, const T &val) : v_(n), n_(n), data_(v_.begin()) |
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| 112 | { |
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| 113 | #ifdef TNT_DEBUG |
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| 114 | std::cout << "Created Fortran_Array1D(int n, const T& val) \n"; |
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| 115 | #endif |
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| 116 | set_(data_, data_+ n, val); |
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| 117 | |
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| 118 | } |
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| 119 | |
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| 120 | template <class T> |
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| 121 | Fortran_Array1D<T>::Fortran_Array1D(int n, T *a) : v_(a), n_(n) , data_(v_.begin()) |
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| 122 | { |
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| 123 | #ifdef TNT_DEBUG |
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| 124 | std::cout << "Created Fortran_Array1D(int n, T* a) \n"; |
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| 125 | #endif |
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| 126 | } |
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| 127 | |
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| 128 | template <class T> |
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| 129 | inline T& Fortran_Array1D<T>::operator()(int i) |
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| 130 | { |
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| 131 | #ifdef TNT_BOUNDS_CHECK |
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| 132 | assert(i>= 1); |
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| 133 | assert(i <= n_); |
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| 134 | #endif |
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| 135 | return data_[i-1]; |
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| 136 | } |
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| 137 | |
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| 138 | template <class T> |
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| 139 | inline const T& Fortran_Array1D<T>::operator()(int i) const |
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| 140 | { |
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| 141 | #ifdef TNT_BOUNDS_CHECK |
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| 142 | assert(i>= 1); |
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| 143 | assert(i <= n_); |
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| 144 | #endif |
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| 145 | return data_[i-1]; |
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| 146 | } |
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| 147 | |
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| 148 | |
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| 149 | |
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| 150 | |
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| 151 | template <class T> |
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| 152 | Fortran_Array1D<T> & Fortran_Array1D<T>::operator=(const T &a) |
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| 153 | { |
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| 154 | set_(data_, data_+n_, a); |
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| 155 | return *this; |
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| 156 | } |
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| 157 | |
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| 158 | template <class T> |
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| 159 | Fortran_Array1D<T> Fortran_Array1D<T>::copy() const |
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| 160 | { |
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| 161 | Fortran_Array1D A( n_); |
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| 162 | copy_(A.data_, data_, n_); |
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| 163 | |
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| 164 | return A; |
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| 165 | } |
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| 166 | |
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| 167 | |
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| 168 | template <class T> |
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| 169 | Fortran_Array1D<T> & Fortran_Array1D<T>::inject(const Fortran_Array1D &A) |
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| 170 | { |
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| 171 | if (A.n_ == n_) |
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| 172 | copy_(data_, A.data_, n_); |
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| 173 | |
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| 174 | return *this; |
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| 175 | } |
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| 176 | |
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| 177 | |
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| 178 | |
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| 179 | |
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| 180 | |
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| 181 | template <class T> |
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| 182 | Fortran_Array1D<T> & Fortran_Array1D<T>::ref(const Fortran_Array1D<T> &A) |
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| 183 | { |
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| 184 | if (this != &A) |
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| 185 | { |
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| 186 | v_ = A.v_; /* operator= handles the reference counting. */ |
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| 187 | n_ = A.n_; |
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| 188 | data_ = A.data_; |
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| 189 | |
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| 190 | } |
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| 191 | return *this; |
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| 192 | } |
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| 193 | |
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| 194 | template <class T> |
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| 195 | Fortran_Array1D<T> & Fortran_Array1D<T>::operator=(const Fortran_Array1D<T> &A) |
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| 196 | { |
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| 197 | return ref(A); |
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| 198 | } |
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| 199 | |
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| 200 | template <class T> |
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| 201 | inline int Fortran_Array1D<T>::dim1() const { return n_; } |
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| 202 | |
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| 203 | template <class T> |
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| 204 | inline int Fortran_Array1D<T>::dim() const { return n_; } |
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| 205 | |
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| 206 | template <class T> |
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| 207 | Fortran_Array1D<T>::~Fortran_Array1D() {} |
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| 208 | |
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| 209 | |
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| 210 | /* ............................ exented interface ......................*/ |
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| 211 | |
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| 212 | template <class T> |
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| 213 | inline int Fortran_Array1D<T>::ref_count() const |
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| 214 | { |
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| 215 | return v_.ref_count(); |
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| 216 | } |
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| 217 | |
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| 218 | template <class T> |
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| 219 | inline Fortran_Array1D<T> Fortran_Array1D<T>::subarray(int i0, int i1) |
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| 220 | { |
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| 221 | #ifdef TNT_DEBUG |
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| 222 | std::cout << "entered subarray. \n"; |
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| 223 | #endif |
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| 224 | if ((i0 > 0) && (i1 < n_) || (i0 <= i1)) |
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| 225 | { |
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| 226 | Fortran_Array1D<T> X(*this); /* create a new instance of this array. */ |
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| 227 | X.n_ = i1-i0+1; |
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| 228 | X.data_ += i0; |
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| 229 | |
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| 230 | return X; |
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| 231 | } |
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| 232 | else |
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| 233 | { |
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| 234 | #ifdef TNT_DEBUG |
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| 235 | std::cout << "subarray: null return.\n"; |
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| 236 | #endif |
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| 237 | return Fortran_Array1D<T>(); |
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| 238 | } |
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| 239 | } |
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| 240 | |
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| 241 | |
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| 242 | /* private internal functions */ |
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| 243 | |
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| 244 | |
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| 245 | template <class T> |
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| 246 | void Fortran_Array1D<T>::set_(T* begin, T* end, const T& a) |
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| 247 | { |
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| 248 | for (T* p=begin; p<end; p++) |
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| 249 | *p = a; |
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| 250 | |
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| 251 | } |
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| 252 | |
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| 253 | template <class T> |
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| 254 | void Fortran_Array1D<T>::copy_(T* p, const T* q, int len) const |
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| 255 | { |
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| 256 | T *end = p + len; |
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| 257 | while (p<end ) |
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| 258 | *p++ = *q++; |
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| 259 | |
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| 260 | } |
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| 261 | |
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| 262 | |
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| 263 | } /* namespace TNT */ |
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| 264 | |
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| 265 | #endif |
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| 266 | /* TNT_FORTRAN_ARRAY1D_H */ |
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| 267 | |
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