1 | /*************************************************************************** |
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2 | * blitz/tinymat.h Declaration of TinyMatrix<T, N, M> |
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3 | * |
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4 | * $Id: tinymat.h,v 1.6 2003/12/11 03:44:22 julianc Exp $ |
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5 | * |
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6 | * Copyright (C) 1997-2001 Todd Veldhuizen <tveldhui@oonumerics.org> |
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7 | * |
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8 | * This program is free software; you can redistribute it and/or |
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9 | * modify it under the terms of the GNU General Public License |
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10 | * as published by the Free Software Foundation; either version 2 |
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11 | * of the License, or (at your option) any later version. |
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12 | * |
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13 | * This program is distributed in the hope that it will be useful, |
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | * GNU General Public License for more details. |
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17 | * |
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18 | * Suggestions: blitz-dev@oonumerics.org |
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19 | * Bugs: blitz-bugs@oonumerics.org |
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20 | * |
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21 | * For more information, please see the Blitz++ Home Page: |
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22 | * http://oonumerics.org/blitz/ |
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23 | * |
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24 | ***************************************************************************/ |
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25 | |
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26 | #ifndef BZ_TINYMAT_H |
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27 | #define BZ_TINYMAT_H |
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28 | |
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29 | #ifndef BZ_BLITZ_H |
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30 | #include <blitz/blitz.h> |
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31 | #endif |
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32 | |
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33 | #ifndef BZ_TINYVEC_H |
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34 | #include <blitz/tinyvec.h> |
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35 | #endif |
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36 | |
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37 | #ifndef BZ_LISTINIT_H |
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38 | #include <blitz/listinit.h> |
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39 | #endif |
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40 | |
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41 | #include <blitz/tinymatexpr.h> |
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42 | #include <blitz/meta/matassign.h> |
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43 | |
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44 | BZ_NAMESPACE(blitz) |
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45 | |
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46 | // Forward declarations |
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47 | template<typename T_expr> |
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48 | class _bz_tinyMatExpr; |
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49 | |
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50 | template<typename T_numtype, int N_rows, int N_columns, int N_rowStride, |
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51 | int N_colStride> |
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52 | class _bz_tinyMatrixRef { |
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53 | |
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54 | public: |
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55 | _bz_tinyMatrixRef(T_numtype* restrict const data) |
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56 | : data_(data) |
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57 | { } |
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58 | |
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59 | T_numtype * restrict data() |
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60 | { return (T_numtype * restrict)data_; } |
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61 | |
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62 | T_numtype& restrict operator()(int i, int j) |
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63 | { return data_[i * N_rowStride + j * N_colStride]; } |
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64 | |
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65 | T_numtype operator()(int i, int j) const |
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66 | { return data_[i * N_rowStride + j * N_colStride]; } |
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67 | |
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68 | protected: |
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69 | T_numtype * restrict const data_; |
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70 | }; |
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71 | |
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72 | template<typename P_numtype, int N_rows, int N_columns> |
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73 | class TinyMatrix { |
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74 | |
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75 | public: |
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76 | typedef P_numtype T_numtype; |
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77 | typedef _bz_tinyMatrixRef<T_numtype, N_rows, N_columns, N_columns, 1> |
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78 | T_reference; |
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79 | typedef TinyMatrix<T_numtype, N_rows, N_columns> T_matrix; |
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80 | |
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81 | TinyMatrix() { } |
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82 | |
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83 | T_numtype* restrict data() |
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84 | { return data_; } |
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85 | |
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86 | const T_numtype* restrict data() const |
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87 | { return data_; } |
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88 | |
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89 | T_numtype* restrict dataFirst() |
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90 | { return data_; } |
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91 | |
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92 | const T_numtype* restrict dataFirst() const |
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93 | { return data_; } |
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94 | |
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95 | // NEEDS_WORK -- precondition checks |
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96 | T_numtype& restrict operator()(int i, int j) |
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97 | { return data_[i*N_columns + j]; } |
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98 | |
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99 | T_numtype operator()(int i, int j) const |
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100 | { return data_[i*N_columns + j]; } |
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101 | |
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102 | T_reference getRef() |
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103 | { return T_reference((T_numtype*)data_); } |
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104 | |
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105 | const T_reference getRef() const |
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106 | { return T_reference((T_numtype*)data_); } |
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107 | |
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108 | // Scalar operand |
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109 | ListInitializationSwitch<T_matrix,T_numtype*> |
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110 | operator=(T_numtype x) |
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111 | { |
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112 | return ListInitializationSwitch<T_matrix,T_numtype*>(*this, x); |
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113 | } |
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114 | |
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115 | template<typename T_expr> |
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116 | TinyMatrix<T_numtype, N_rows, N_columns>& |
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117 | operator=(_bz_tinyMatExpr<T_expr> expr) |
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118 | { |
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119 | _bz_meta_matAssign<N_rows, N_columns, 0>::f(*this, expr, |
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120 | _bz_update<T_numtype, _bz_typename T_expr::T_numtype>()); |
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121 | return *this; |
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122 | } |
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123 | |
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124 | void initialize(T_numtype x) |
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125 | { |
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126 | for (int i=0; i < N_rows; ++i) |
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127 | for (int j=0; j < N_columns; ++j) |
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128 | (*this)(i,j) = x; |
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129 | } |
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130 | |
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131 | T_numtype* restrict getInitializationIterator() |
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132 | { return dataFirst(); } |
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133 | |
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134 | protected: |
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135 | T_numtype data_[N_rows * N_columns]; |
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136 | }; |
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137 | |
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138 | BZ_NAMESPACE_END |
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139 | |
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140 | #include <blitz/meta/matvec.h> // Matrix-vector product metaprogram |
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141 | #include <blitz/meta/matmat.h> // Matrix-matrix products |
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142 | #include <blitz/tinymatio.cc> // I/O operations |
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143 | |
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144 | #endif // BZ_TINYMAT_H |
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145 | |
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