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1 /* |
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2 |
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3 Copyright (C) 1996, 1997, 2003, 2004, 2005, 2007 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 3 of the License, or (at your |
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10 option) any 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, see |
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19 <http://www.gnu.org/licenses/>. |
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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 "MArrayN.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 // N-dimensional array with math ops. |
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34 |
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35 // Element by element MArrayN by scalar ops. |
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36 |
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37 template <class T> |
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38 MArrayN<T>& |
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39 operator += (MArrayN<T>& a, const T& s) |
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40 { |
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41 DO_VS_OP2 (T, a, +=, s) |
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42 return a; |
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43 } |
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44 |
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45 template <class T> |
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46 MArrayN<T>& |
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47 operator -= (MArrayN<T>& a, const T& s) |
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48 { |
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49 DO_VS_OP2 (T, a, -=, s) |
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50 return a; |
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51 } |
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52 |
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53 // Element by element MArrayN by MArrayN ops. |
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54 |
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55 template <class T> |
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56 MArrayN<T>& |
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57 operator += (MArrayN<T>& a, const MArrayN<T>& b) |
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58 { |
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59 octave_idx_type l = a.length (); |
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60 |
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61 if (l > 0) |
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62 { |
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63 dim_vector a_dims = a.dims (); |
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64 dim_vector b_dims = b.dims (); |
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65 |
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66 if (a_dims != b_dims) |
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67 gripe_nonconformant ("operator +=", a_dims, b_dims); |
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68 else |
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69 DO_VV_OP2 (T, a, +=, b); |
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70 } |
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71 |
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72 return a; |
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73 } |
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74 |
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75 template <class T> |
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76 MArrayN<T>& |
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77 operator -= (MArrayN<T>& a, const MArrayN<T>& b) |
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78 { |
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79 octave_idx_type l = a.length (); |
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80 |
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81 if (l > 0) |
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82 { |
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83 dim_vector a_dims = a.dims (); |
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84 dim_vector b_dims = b.dims (); |
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85 |
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86 if (a_dims != b_dims) |
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87 gripe_nonconformant ("operator -=", a_dims, b_dims); |
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88 else |
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89 DO_VV_OP2 (T, a, -=, b); |
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90 } |
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91 return a; |
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92 } |
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93 |
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94 // Element by element MArrayN by scalar ops. |
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95 |
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96 #define MARRAYN_NDS_OP(OP) \ |
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97 template <class T> \ |
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98 MArrayN<T> \ |
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99 operator OP (const MArrayN<T>& a, const T& s) \ |
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100 { \ |
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101 MArrayN<T> result (a.dims ()); \ |
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102 T *r = result.fortran_vec (); \ |
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103 octave_idx_type l = a.length (); \ |
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104 const T *v = a.data (); \ |
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105 DO_VS_OP (r, l, v, OP, s); \ |
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106 return result; \ |
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107 } |
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108 |
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109 MARRAYN_NDS_OP (+) |
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110 MARRAYN_NDS_OP (-) |
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111 MARRAYN_NDS_OP (*) |
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112 MARRAYN_NDS_OP (/) |
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113 |
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114 // Element by element MArrayN by scalar ops. |
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115 |
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116 #define MARRAYN_SND_OP(OP) \ |
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117 template <class T> \ |
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118 MArrayN<T> \ |
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119 operator OP (const T& s, const MArrayN<T>& a) \ |
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120 { \ |
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121 MArrayN<T> result (a.dims ()); \ |
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122 T *r = result.fortran_vec (); \ |
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123 octave_idx_type l = a.length (); \ |
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124 const T *v = a.data (); \ |
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125 DO_SV_OP (r, l, s, OP, v); \ |
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126 return result; \ |
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127 } |
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128 |
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129 MARRAYN_SND_OP (+) |
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130 MARRAYN_SND_OP (-) |
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131 MARRAYN_SND_OP (*) |
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132 MARRAYN_SND_OP (/) |
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133 |
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134 #define MARRAY_NDND_OP(FCN, OP) \ |
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135 template <class T> \ |
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136 MArrayN<T> \ |
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137 FCN (const MArrayN<T>& a, const MArrayN<T>& b) \ |
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138 { \ |
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139 dim_vector a_dims = a.dims (); \ |
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140 dim_vector b_dims = b.dims (); \ |
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141 int dims_ok = 1; \ |
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142 int any_dims_zero = 0; \ |
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143 if (a_dims.length () != b_dims.length ()) \ |
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144 dims_ok = 0; \ |
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145 else \ |
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146 { \ |
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147 for (int i = 0; i < a_dims.length (); i++) \ |
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148 { \ |
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149 if (a_dims (i) != b_dims (i)) \ |
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150 { dims_ok = 0; break; } \ |
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151 if (a_dims (i) == 0) \ |
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152 any_dims_zero = 1; \ |
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153 } \ |
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154 } \ |
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155 if (!dims_ok) \ |
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156 { \ |
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157 gripe_nonconformant (#FCN, a_dims, b_dims); \ |
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158 return MArrayN<T> (); \ |
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159 } \ |
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160 if (any_dims_zero) \ |
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161 return MArrayN<T> (a_dims); \ |
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162 octave_idx_type l = a.length (); \ |
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163 MArrayN<T> result (a_dims); \ |
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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 const T *y = b.data (); \ |
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167 DO_VV_OP (r, l, x, OP, y); \ |
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168 return result; \ |
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169 } |
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170 |
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171 MARRAY_NDND_OP (operator +, +) |
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172 MARRAY_NDND_OP (operator -, -) |
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173 MARRAY_NDND_OP (product, *) |
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174 MARRAY_NDND_OP (quotient, /) |
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175 |
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176 template <class T> |
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177 MArrayN<T> |
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178 operator + (const MArrayN<T>& a) |
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179 { |
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180 return a; |
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181 } |
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182 |
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183 template <class T> |
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184 MArrayN<T> |
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185 operator - (const MArrayN<T>& a) |
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186 { |
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187 octave_idx_type l = a.length (); |
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188 MArrayN<T> result (a.dims ()); |
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189 T *r = result.fortran_vec (); |
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190 const T *x = a.data (); |
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191 NEG_V (r, l, x); |
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192 return result; |
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193 } |
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194 |
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195 /* |
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196 ;;; Local Variables: *** |
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197 ;;; mode: C++ *** |
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198 ;;; End: *** |
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199 */ |
