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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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include "MArrayN.h" |
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29 #include "Array-util.h" |
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30 #include "ArrayN-idx.h" |
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31 #include "lo-error.h" |
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32 |
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33 #include "MArray-defs.h" |
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34 |
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35 // N-dimensional array with math ops. |
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36 |
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37 // Element by element MArrayN by scalar ops. |
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38 |
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39 template <class T> |
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40 MArrayN<T>& |
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41 operator += (MArrayN<T>& a, const T& s) |
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42 { |
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43 DO_VS_OP2 (T, a, +=, s) |
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44 return a; |
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45 } |
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46 |
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47 template <class T> |
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48 MArrayN<T>& |
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49 operator -= (MArrayN<T>& a, const T& s) |
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50 { |
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51 DO_VS_OP2 (T, a, -=, s) |
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52 return a; |
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53 } |
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54 |
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55 // Element by element MArrayN by MArrayN ops. |
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56 |
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57 template <class T> |
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58 MArrayN<T>& |
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59 operator += (MArrayN<T>& a, const MArrayN<T>& b) |
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60 { |
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61 octave_idx_type l = a.length (); |
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62 |
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63 if (l > 0) |
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64 { |
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65 dim_vector a_dims = a.dims (); |
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66 dim_vector b_dims = b.dims (); |
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67 |
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68 if (a_dims != b_dims) |
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69 gripe_nonconformant ("operator +=", a_dims, b_dims); |
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70 else |
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71 DO_VV_OP2 (T, a, +=, b); |
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72 } |
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73 |
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74 return a; |
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75 } |
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76 |
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77 template <class T> |
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78 MArrayN<T>& |
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79 operator -= (MArrayN<T>& a, const MArrayN<T>& b) |
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80 { |
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81 octave_idx_type l = a.length (); |
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82 |
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83 if (l > 0) |
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84 { |
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85 dim_vector a_dims = a.dims (); |
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86 dim_vector b_dims = b.dims (); |
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87 |
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88 if (a_dims != b_dims) |
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89 gripe_nonconformant ("operator -=", a_dims, b_dims); |
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90 else |
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91 DO_VV_OP2 (T, a, -=, b); |
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92 } |
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93 return a; |
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94 } |
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95 |
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96 // Element by element MArrayN by scalar ops. |
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97 |
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98 #define MARRAYN_NDS_OP(OP) \ |
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99 template <class T> \ |
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100 MArrayN<T> \ |
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101 operator OP (const MArrayN<T>& a, const T& s) \ |
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102 { \ |
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103 MArrayN<T> result (a.dims ()); \ |
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104 T *r = result.fortran_vec (); \ |
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105 octave_idx_type l = a.length (); \ |
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106 const T *v = a.data (); \ |
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107 DO_VS_OP (r, l, v, OP, s); \ |
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108 return result; \ |
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109 } |
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110 |
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111 MARRAYN_NDS_OP (+) |
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112 MARRAYN_NDS_OP (-) |
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113 MARRAYN_NDS_OP (*) |
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114 MARRAYN_NDS_OP (/) |
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115 |
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116 // Element by element MArrayN by scalar ops. |
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117 |
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118 #define MARRAYN_SND_OP(OP) \ |
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119 template <class T> \ |
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120 MArrayN<T> \ |
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121 operator OP (const T& s, const MArrayN<T>& a) \ |
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122 { \ |
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123 MArrayN<T> result (a.dims ()); \ |
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124 T *r = result.fortran_vec (); \ |
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125 octave_idx_type l = a.length (); \ |
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126 const T *v = a.data (); \ |
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127 DO_SV_OP (r, l, s, OP, v); \ |
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128 return result; \ |
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129 } |
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130 |
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131 MARRAYN_SND_OP (+) |
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132 MARRAYN_SND_OP (-) |
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133 MARRAYN_SND_OP (*) |
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134 MARRAYN_SND_OP (/) |
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135 |
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136 #define MARRAY_NDND_OP(FCN, OP) \ |
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137 template <class T> \ |
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138 MArrayN<T> \ |
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139 FCN (const MArrayN<T>& a, const MArrayN<T>& b) \ |
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140 { \ |
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141 dim_vector a_dims = a.dims (); \ |
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142 dim_vector b_dims = b.dims (); \ |
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143 int dims_ok = 1; \ |
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144 int any_dims_zero = 0; \ |
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145 if (a_dims.length () != b_dims.length ()) \ |
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146 dims_ok = 0; \ |
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147 else \ |
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148 { \ |
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149 for (int i = 0; i < a_dims.length (); i++) \ |
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150 { \ |
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151 if (a_dims (i) != b_dims (i)) \ |
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152 { dims_ok = 0; break; } \ |
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153 if (a_dims (i) == 0) \ |
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154 any_dims_zero = 1; \ |
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155 } \ |
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156 } \ |
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157 if (!dims_ok) \ |
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158 { \ |
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159 gripe_nonconformant (#FCN, a_dims, b_dims); \ |
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160 return MArrayN<T> (); \ |
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161 } \ |
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162 if (any_dims_zero) \ |
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163 return MArrayN<T> (a_dims); \ |
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164 octave_idx_type l = a.length (); \ |
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165 MArrayN<T> result (a_dims); \ |
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166 T* r = result.fortran_vec (); \ |
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167 const T *x = a.data (); \ |
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168 const T *y = b.data (); \ |
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169 DO_VV_OP (r, l, x, OP, y); \ |
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170 return result; \ |
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171 } |
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172 |
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173 MARRAY_NDND_OP (operator +, +) |
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174 MARRAY_NDND_OP (operator -, -) |
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175 MARRAY_NDND_OP (product, *) |
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176 MARRAY_NDND_OP (quotient, /) |
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177 |
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178 template <class T> |
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179 MArrayN<T> |
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180 operator + (const MArrayN<T>& a) |
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181 { |
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182 return a; |
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183 } |
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184 |
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185 template <class T> |
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186 MArrayN<T> |
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187 operator - (const MArrayN<T>& a) |
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188 { |
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189 octave_idx_type l = a.length (); |
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190 MArrayN<T> result (a.dims ()); |
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191 T *r = result.fortran_vec (); |
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192 const T *x = a.data (); |
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193 NEG_V (r, l, x); |
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194 return result; |
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195 } |
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196 |
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197 /* |
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198 ;;; Local Variables: *** |
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199 ;;; mode: C++ *** |
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200 ;;; End: *** |
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201 */ |
