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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 #if defined (__GNUG__) && defined (USE_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 "MArrayN.h" |
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32 #include "Array-util.h" |
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33 #include "ArrayN-idx.h" |
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34 #include "lo-error.h" |
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35 |
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36 #include "MArray-defs.h" |
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37 |
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38 // N-dimensional array with math ops. |
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39 |
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40 // Element by element MArrayN by scalar ops. |
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41 |
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42 template <class T> |
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43 MArrayN<T>& |
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44 operator += (MArrayN<T>& a, const T& s) |
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45 { |
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46 DO_VS_OP2 (T, a, +=, s) |
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47 return a; |
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48 } |
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49 |
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50 template <class T> |
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51 MArrayN<T>& |
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52 operator -= (MArrayN<T>& a, const T& s) |
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53 { |
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54 DO_VS_OP2 (T, a, -=, s) |
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55 return a; |
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56 } |
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57 |
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58 // Element by element MArrayN by MArrayN ops. |
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59 |
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60 template <class T> |
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61 MArrayN<T>& |
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62 operator += (MArrayN<T>& a, const MArrayN<T>& b) |
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63 { |
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64 int l = a.length (); |
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65 |
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66 if (l > 0) |
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67 { |
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68 dim_vector a_dims = a.dims (); |
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69 dim_vector b_dims = b.dims (); |
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70 |
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71 if (a_dims != b_dims) |
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72 gripe_nonconformant ("operator +=", a_dims, b_dims); |
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73 else |
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74 DO_VV_OP2 (T, a, +=, b); |
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75 } |
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76 |
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77 return a; |
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78 } |
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79 |
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80 template <class T> |
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81 MArrayN<T>& |
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82 operator -= (MArrayN<T>& a, const MArrayN<T>& b) |
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83 { |
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84 int l = a.length (); |
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85 |
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86 if (l > 0) |
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87 { |
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88 dim_vector a_dims = a.dims (); |
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89 dim_vector b_dims = b.dims (); |
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90 |
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91 if (a_dims != b_dims) |
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92 gripe_nonconformant ("operator -=", a_dims, b_dims); |
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93 else |
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94 DO_VV_OP2 (T, a, -=, b); |
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95 } |
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96 return a; |
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97 } |
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98 |
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99 // Element by element MArrayN by scalar ops. |
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100 |
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101 #define MARRAYN_NDS_OP(OP) \ |
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102 template <class T> \ |
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103 MArrayN<T> \ |
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104 operator OP (const MArrayN<T>& a, const T& s) \ |
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105 { \ |
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106 MArrayN<T> result (a.dims ()); \ |
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107 T *r = result.fortran_vec (); \ |
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108 int l = a.length (); \ |
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109 const T *v = a.data (); \ |
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110 DO_VS_OP (r, l, v, OP, s); \ |
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111 return result; \ |
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112 } |
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113 |
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114 MARRAYN_NDS_OP (+) |
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115 MARRAYN_NDS_OP (-) |
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116 MARRAYN_NDS_OP (*) |
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117 MARRAYN_NDS_OP (/) |
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118 |
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119 // Element by element MArrayN by scalar ops. |
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120 |
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121 #define MARRAYN_SND_OP(OP) \ |
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122 template <class T> \ |
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123 MArrayN<T> \ |
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124 operator OP (const T& s, const MArrayN<T>& a) \ |
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125 { \ |
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126 MArrayN<T> result (a.dims ()); \ |
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127 T *r = result.fortran_vec (); \ |
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128 int l = a.length (); \ |
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129 const T *v = a.data (); \ |
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130 DO_SV_OP (r, l, s, OP, v); \ |
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131 return result; \ |
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132 } |
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133 |
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134 MARRAYN_SND_OP (+) |
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135 MARRAYN_SND_OP (-) |
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136 MARRAYN_SND_OP (*) |
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137 MARRAYN_SND_OP (/) |
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138 |
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139 #define MARRAY_NDND_OP(FCN, OP) \ |
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140 template <class T> \ |
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141 MArrayN<T> \ |
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142 FCN (const MArrayN<T>& a, const MArrayN<T>& b) \ |
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143 { \ |
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144 dim_vector a_dims = a.dims (); \ |
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145 dim_vector b_dims = b.dims (); \ |
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146 int dims_ok = 1; \ |
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147 int any_dims_zero = 0; \ |
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148 if (a_dims.length () != b_dims.length ()) \ |
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149 dims_ok = 0; \ |
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150 else \ |
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151 { \ |
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152 for (int i = 0; i < a_dims.length (); i++) \ |
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153 { \ |
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154 if (a_dims (i) != b_dims (i)) \ |
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155 { dims_ok = 0; break; } \ |
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156 if (a_dims (i) == 0) \ |
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157 any_dims_zero = 1; \ |
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158 } \ |
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159 } \ |
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160 if (!dims_ok) \ |
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161 { \ |
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162 gripe_nonconformant (#FCN, a_dims, b_dims); \ |
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163 return MArrayN<T> (); \ |
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164 } \ |
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165 if (any_dims_zero) \ |
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166 return MArrayN<T> (a_dims); \ |
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167 int l = a.length (); \ |
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168 MArrayN<T> result (a_dims); \ |
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169 T* r = result.fortran_vec (); \ |
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170 const T *x = a.data (); \ |
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171 const T *y = b.data (); \ |
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172 DO_VV_OP (r, l, x, OP, y); \ |
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173 return result; \ |
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174 } |
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175 |
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176 MARRAY_NDND_OP (operator +, +) |
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177 MARRAY_NDND_OP (operator -, -) |
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178 MARRAY_NDND_OP (product, *) |
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179 MARRAY_NDND_OP (quotient, /) |
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180 |
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181 template <class T> |
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182 MArrayN<T> |
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183 operator + (const MArrayN<T>& a) |
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184 { |
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185 return a; |
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186 } |
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187 |
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188 template <class T> |
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189 MArrayN<T> |
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190 operator - (const MArrayN<T>& a) |
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191 { |
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192 int l = a.length (); |
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193 MArrayN<T> result (a.dims ()); |
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194 T *r = result.fortran_vec (); |
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195 const T *x = a.data (); |
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196 NEG_V (r, l, x); |
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197 return result; |
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198 } |
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199 |
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200 /* |
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201 ;;; Local Variables: *** |
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202 ;;; mode: C++ *** |
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203 ;;; End: *** |
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204 */ |
