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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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1988
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #if defined (__GNUG__) && ! defined (NO_PRAGMA_INTERFACE_IMPLEMENTATION) |
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24 #pragma implementation |
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25 #endif |
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26 |
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27 #ifdef HAVE_CONFIG_H |
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28 #include <config.h> |
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29 #endif |
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30 |
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31 #include "MDiagArray2.h" |
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32 #include "lo-error.h" |
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33 |
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34 #include "MArray-defs.h" |
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35 |
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36 // Some functions return a reference to this object after a failure. |
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37 template <class T> MDiagArray2<T> MDiagArray2<T>::nil_array; |
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38 |
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39 // Two dimensional diagonal array with math ops. |
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40 |
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41 // Element by element MDiagArray2 by MDiagArray2 ops. |
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42 |
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43 template <class T> |
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44 MDiagArray2<T>& |
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45 operator += (MDiagArray2<T>& a, const MDiagArray2<T>& b) |
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46 { |
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47 int r = a.rows (); |
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48 int c = a.cols (); |
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49 |
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50 int b_nr = b.rows (); |
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51 int b_nc = b.cols (); |
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52 |
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53 if (r != b_nr || c != b_nc) |
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54 { |
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55 gripe_nonconformant ("operator +=", r, c, b_nr, b_nc); |
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56 return MDiagArray2<T>::nil_array; |
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57 } |
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58 else |
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59 { |
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60 int l = a.length (); |
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61 DO_VV_OP2 (+=); |
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62 } |
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63 return a; |
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64 } |
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65 |
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66 template <class T> |
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67 MDiagArray2<T>& |
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68 operator -= (MDiagArray2<T>& a, const MDiagArray2<T>& b) |
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69 { |
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70 int r = a.rows (); |
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71 int c = a.cols (); |
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72 |
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73 int b_nr = b.rows (); |
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74 int b_nc = b.cols (); |
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75 |
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76 if (r != b_nr || c != b_nc) |
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77 { |
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78 gripe_nonconformant ("operator -=", r, c, b_nr, b_nc); |
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79 return MDiagArray2<T>::nil_array; |
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80 } |
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81 else |
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82 { |
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83 int l = a.length (); |
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84 DO_VV_OP2 (-=); |
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85 } |
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86 return a; |
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87 } |
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88 |
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89 // Element by element MDiagArray2 by scalar ops. |
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90 |
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91 #define MARRAY_DAS_OP(OP) \ |
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92 template <class T> \ |
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93 MDiagArray2<T> \ |
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94 operator OP (const MDiagArray2<T>& a, const T& s) \ |
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95 { \ |
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96 MDiagArray2<T> result (a.rows (), a.cols ()); \ |
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97 T *r = result.fortran_vec (); \ |
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98 int l = a.length (); \ |
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99 const T *v = a.data (); \ |
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100 DO_VS_OP (r, l, v, OP, s); \ |
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101 return result; \ |
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102 } |
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103 |
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104 MARRAY_DAS_OP (*) |
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105 MARRAY_DAS_OP (/) |
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106 |
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107 // Element by element scalar by MDiagArray2 ops. |
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108 |
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109 template <class T> |
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110 MDiagArray2<T> |
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111 operator * (const T& s, const MDiagArray2<T>& a) |
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112 { |
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113 MDiagArray2<T> result (a.rows (), a.cols ()); \ |
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114 T *r = result.fortran_vec (); \ |
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115 int l = a.length (); \ |
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116 const T *v = a.data (); \ |
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117 DO_SV_OP (r, l, s, *, v); \ |
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118 return result; \ |
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119 } |
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120 |
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121 // Element by element MDiagArray2 by MDiagArray2 ops. |
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122 |
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123 #define MARRAY_DADA_OP(FCN, OP) \ |
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124 template <class T> \ |
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125 MDiagArray2<T> \ |
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126 FCN (const MDiagArray2<T>& a, const MDiagArray2<T>& b) \ |
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127 { \ |
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128 int a_nr = a.rows (); \ |
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129 int a_nc = a.cols (); \ |
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130 int b_nr = b.rows (); \ |
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131 int b_nc = b.cols (); \ |
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132 if (a_nr != b_nr || a_nc != b_nc) \ |
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133 { \ |
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134 gripe_nonconformant (#FCN, a_nr, a_nc, b_nr, b_nc); \ |
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135 return MDiagArray2<T> (); \ |
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136 } \ |
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137 if (a_nc == 0 || a_nr == 0) \ |
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138 return MDiagArray2<T> (); \ |
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139 int l = a.length (); \ |
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140 MDiagArray2<T> result (a_nr, a_nc); \ |
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141 T *r = result.fortran_vec (); \ |
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142 const T *x = a.data (); \ |
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143 const T *y = b.data (); \ |
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144 DO_VV_OP (r, l, x, OP, y); \ |
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145 return result; \ |
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146 } |
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147 |
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148 MARRAY_DADA_OP (operator +, +) |
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149 MARRAY_DADA_OP (operator -, -) |
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150 MARRAY_DADA_OP (product, *) |
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151 |
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152 // Unary MDiagArray2 ops. |
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153 |
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154 template <class T> |
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155 MDiagArray2<T> |
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156 operator + (const MDiagArray2<T>& a) |
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157 { |
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158 return a; |
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159 } |
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160 |
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161 template <class T> |
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162 MDiagArray2<T> |
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163 operator - (const MDiagArray2<T>& a) |
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164 { |
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165 int l = a.length (); |
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166 MDiagArray2<T> result (a.rows (), a.cols ()); |
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167 T *r = result.fortran_vec (); |
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168 const T *x = a.data (); |
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169 NEG_V (r, l, x); |
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170 return result; |
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171 } |
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172 |
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173 /* |
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174 ;;; Local Variables: *** |
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175 ;;; mode: C++ *** |
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176 ;;; End: *** |
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177 */ |
