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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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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 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #include "MDiagArray2.h" |
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28 #include "Array-util.h" |
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29 #include "lo-error.h" |
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30 |
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31 #include "MArray-defs.h" |
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32 |
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33 // Some functions return a reference to this object after a failure. |
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34 template <class T> MDiagArray2<T> MDiagArray2<T>::nil_array; |
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35 |
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36 // Two dimensional diagonal array with math ops. |
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37 |
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38 // Element by element MDiagArray2 by MDiagArray2 ops. |
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39 |
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40 template <class T> |
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41 MDiagArray2<T>& |
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42 operator += (MDiagArray2<T>& a, const MDiagArray2<T>& b) |
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43 { |
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44 int r = a.rows (); |
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45 int c = a.cols (); |
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46 |
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47 int b_nr = b.rows (); |
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48 int b_nc = b.cols (); |
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49 |
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50 if (r != b_nr || c != b_nc) |
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51 { |
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52 gripe_nonconformant ("operator +=", r, c, b_nr, b_nc); |
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53 return MDiagArray2<T>::nil_array; |
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54 } |
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55 else |
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56 { |
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57 int l = a.length (); |
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58 DO_VV_OP2 (T, a, +=, b); |
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59 } |
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60 return a; |
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61 } |
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62 |
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63 template <class T> |
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64 MDiagArray2<T>& |
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65 operator -= (MDiagArray2<T>& a, const MDiagArray2<T>& b) |
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66 { |
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67 int r = a.rows (); |
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68 int c = a.cols (); |
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69 |
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70 int b_nr = b.rows (); |
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71 int b_nc = b.cols (); |
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72 |
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73 if (r != b_nr || c != b_nc) |
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74 { |
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75 gripe_nonconformant ("operator -=", r, c, b_nr, b_nc); |
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76 return MDiagArray2<T>::nil_array; |
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77 } |
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78 else |
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79 { |
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80 int l = a.length (); |
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81 DO_VV_OP2 (T, a, -=, b); |
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82 } |
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83 return a; |
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84 } |
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85 |
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86 // Element by element MDiagArray2 by scalar ops. |
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87 |
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88 #define MARRAY_DAS_OP(OP) \ |
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89 template <class T> \ |
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90 MDiagArray2<T> \ |
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91 operator OP (const MDiagArray2<T>& a, const T& s) \ |
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92 { \ |
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93 MDiagArray2<T> result (a.rows (), a.cols ()); \ |
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94 T *r = result.fortran_vec (); \ |
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95 int l = a.length (); \ |
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96 const T *v = a.data (); \ |
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97 DO_VS_OP (r, l, v, OP, s); \ |
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98 return result; \ |
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99 } |
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100 |
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101 MARRAY_DAS_OP (*) |
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102 MARRAY_DAS_OP (/) |
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103 |
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104 // Element by element scalar by MDiagArray2 ops. |
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105 |
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106 template <class T> |
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107 MDiagArray2<T> |
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108 operator * (const T& s, const MDiagArray2<T>& a) |
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109 { |
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110 MDiagArray2<T> result (a.rows (), a.cols ()); \ |
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111 T *r = result.fortran_vec (); \ |
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112 int l = a.length (); \ |
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113 const T *v = a.data (); \ |
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114 DO_SV_OP (r, l, s, *, v); \ |
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115 return result; \ |
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116 } |
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117 |
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118 // Element by element MDiagArray2 by MDiagArray2 ops. |
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119 |
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120 #define MARRAY_DADA_OP(FCN, OP) \ |
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121 template <class T> \ |
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122 MDiagArray2<T> \ |
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123 FCN (const MDiagArray2<T>& a, const MDiagArray2<T>& b) \ |
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124 { \ |
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125 int a_nr = a.rows (); \ |
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126 int a_nc = a.cols (); \ |
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127 int b_nr = b.rows (); \ |
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128 int b_nc = b.cols (); \ |
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129 if (a_nr != b_nr || a_nc != b_nc) \ |
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130 { \ |
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131 gripe_nonconformant (#FCN, a_nr, a_nc, b_nr, b_nc); \ |
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132 return MDiagArray2<T> (); \ |
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133 } \ |
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134 if (a_nc == 0 || a_nr == 0) \ |
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135 return MDiagArray2<T> (); \ |
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136 int l = a.length (); \ |
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137 MDiagArray2<T> result (a_nr, a_nc); \ |
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138 T *r = result.fortran_vec (); \ |
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139 const T *x = a.data (); \ |
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140 const T *y = b.data (); \ |
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141 DO_VV_OP (r, l, x, OP, y); \ |
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142 return result; \ |
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143 } |
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144 |
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145 MARRAY_DADA_OP (operator +, +) |
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146 MARRAY_DADA_OP (operator -, -) |
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147 MARRAY_DADA_OP (product, *) |
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148 |
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149 // Unary MDiagArray2 ops. |
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150 |
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151 template <class T> |
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152 MDiagArray2<T> |
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153 operator + (const MDiagArray2<T>& a) |
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154 { |
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155 return a; |
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156 } |
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157 |
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158 template <class T> |
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159 MDiagArray2<T> |
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160 operator - (const MDiagArray2<T>& a) |
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161 { |
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162 int l = a.length (); |
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163 MDiagArray2<T> result (a.rows (), a.cols ()); |
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164 T *r = result.fortran_vec (); |
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165 const T *x = a.data (); |
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166 NEG_V (r, l, x); |
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167 return result; |
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168 } |
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169 |
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170 /* |
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171 ;;; Local Variables: *** |
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172 ;;; mode: C++ *** |
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173 ;;; End: *** |
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174 */ |
