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annotate src/ov-perm.cc @ 8367:445d27d79f4e

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support permutation matrix objects
author Jaroslav Hajek <highegg@gmail.com>
date Thu, 04 Dec 2008 08:31:56 +0100
parents
children c43481a19bfe
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8367
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1 /*
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2
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3 Copyright (C) 2008 Jaroslav Hajek <highegg@gmail.com>
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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 "ov-perm.h"
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28 #include "ov-flt-perm.h"
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29 #include "ov-re-mat.h"
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30 #include "ov-scalar.h"
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31 #include "error.h"
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32 #include "gripes.h"
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33 #include "ops.h"
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34
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35 octave_value
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36 octave_perm_matrix::subsref (const std::string& type,
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37 const std::list<octave_value_list>& idx)
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38 {
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39 octave_value retval;
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40
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41 switch (type[0])
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42 {
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43 case '(':
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44 retval = do_index_op (idx.front ());
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45 break;
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46
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47 case '{':
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48 case '.':
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49 {
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50 std::string nm = type_name ();
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51 error ("%s cannot be indexed with %c", nm.c_str (), type[0]);
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52 }
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53 break;
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54
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55 default:
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56 panic_impossible ();
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57 }
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58
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59 return retval.next_subsref (type, idx);
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60 }
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61
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62 octave_value
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63 octave_perm_matrix::do_index_op (const octave_value_list& idx,
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64 bool resize_ok)
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65 {
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66 octave_value retval;
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67 octave_idx_type nidx = idx.length ();
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68 idx_vector idx0, idx1;
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69 if (nidx == 2)
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70 {
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71 idx0 = idx(0).index_vector ();
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72 idx1 = idx(1).index_vector ();
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73 }
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74
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75 // This hack is to allow constructing permutation matrices using
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76 // eye(n)(p,:), eye(n)(:,q) && eye(n)(p,q) where p & q are permutation
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77 // vectors.
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78 // Note that, for better consistency, eye(n)(:,:) still converts to a full
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79 // matrix.
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80 if (! error_state && nidx == 2)
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81 {
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82 bool left = idx0.is_permutation (matrix.rows ());
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83 bool right = idx1.is_permutation (matrix.cols ());
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84
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85 if (left && right)
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86 {
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87 if (idx0.is_colon ()) left = false;
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88 if (idx1.is_colon ()) right = false;
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89 if (left || right)
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90 {
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91 PermMatrix p = matrix;
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92 if (left)
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93 p = PermMatrix (idx0, false) * p;
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94 if (right)
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95 p = p * PermMatrix (idx1, true);
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96 retval = octave_value (p, is_single_type ());
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97 }
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98 }
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99 }
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100
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101 // if error_state is set, we've already griped.
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102 if (! error_state && ! retval.is_defined ())
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103 {
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104 if (nidx == 2 && ! resize_ok &&
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105 idx0.is_scalar () && idx1.is_scalar ())
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106 {
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107 retval = matrix.checkelem (idx0(0), idx1(0));
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108 }
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109 else
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110 retval = to_dense ().do_index_op (idx, resize_ok);
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111 }
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112
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113 return retval;
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114 }
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115
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116 bool
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117 octave_perm_matrix::is_true (void) const
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118 {
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119 return to_dense ().is_true ();
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120 }
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121
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122 bool
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123 octave_perm_matrix::valid_as_scalar_index (void) const
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124 {
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125 return false;
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126 }
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127
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128 double
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129 octave_perm_matrix::double_value (bool) const
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130 {
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131 double retval = lo_ieee_nan_value ();
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132
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133 if (numel () > 0)
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134 {
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135 gripe_implicit_conversion ("Octave:array-as-scalar",
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136 type_name (), "real scalar");
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137
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138 retval = matrix (0, 0);
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139 }
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140 else
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141 gripe_invalid_conversion (type_name (), "real scalar");
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142
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143 return retval;
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144 }
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145
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146 float
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147 octave_perm_matrix::float_value (bool) const
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148 {
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149 float retval = lo_ieee_float_nan_value ();
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150
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151 if (numel () > 0)
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152 {
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153 gripe_implicit_conversion ("Octave:array-as-scalar",
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154 type_name (), "real scalar");
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155
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156 retval = matrix (0, 0);
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157 }
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158 else
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159 gripe_invalid_conversion (type_name (), "real scalar");
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160
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161 return retval;
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162 }
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163
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164 Complex
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165 octave_perm_matrix::complex_value (bool) const
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166 {
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167 double tmp = lo_ieee_nan_value ();
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168
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169 Complex retval (tmp, tmp);
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170
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171 if (rows () > 0 && columns () > 0)
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172 {
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173 gripe_implicit_conversion ("Octave:array-as-scalar",
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174 type_name (), "complex scalar");
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175
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176 retval = matrix (0, 0);
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177 }
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178 else
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179 gripe_invalid_conversion (type_name (), "complex scalar");
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180
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181 return retval;
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182 }
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183
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184 FloatComplex
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185 octave_perm_matrix::float_complex_value (bool) const
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186 {
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187 float tmp = lo_ieee_float_nan_value ();
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188
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189 FloatComplex retval (tmp, tmp);
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190
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191 if (rows () > 0 && columns () > 0)
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192 {
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193 gripe_implicit_conversion ("Octave:array-as-scalar",
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194 type_name (), "complex scalar");
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195
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196 retval = matrix (0, 0);
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197 }
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198 else
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199 gripe_invalid_conversion (type_name (), "complex scalar");
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200
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201 return retval;
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202 }
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203
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204 #define FORWARD_MATRIX_VALUE(TYPE, PREFIX) \
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205 TYPE \
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206 octave_perm_matrix::PREFIX ## _value (bool frc_str_conv) const \
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207 { \
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208 return to_dense ().PREFIX ## _value (frc_str_conv); \
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209 }
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210
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211 FORWARD_MATRIX_VALUE (Matrix, matrix)
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212 FORWARD_MATRIX_VALUE (FloatMatrix, float_matrix)
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213 FORWARD_MATRIX_VALUE (ComplexMatrix, complex_matrix)
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214 FORWARD_MATRIX_VALUE (FloatComplexMatrix, float_complex_matrix)
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215
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216 FORWARD_MATRIX_VALUE (NDArray, array)
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217 FORWARD_MATRIX_VALUE (FloatNDArray, float_array)
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218 FORWARD_MATRIX_VALUE (ComplexNDArray, complex_array)
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219 FORWARD_MATRIX_VALUE (FloatComplexNDArray, float_complex_array)
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220
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221 FORWARD_MATRIX_VALUE (boolNDArray, bool_array)
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222 FORWARD_MATRIX_VALUE (charNDArray, char_array)
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223
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224 FORWARD_MATRIX_VALUE (SparseMatrix, sparse_matrix)
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225 FORWARD_MATRIX_VALUE (SparseComplexMatrix, sparse_complex_matrix)
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226
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227 idx_vector
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228 octave_perm_matrix::index_vector (void) const
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229 {
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230 return to_dense ().index_vector ();
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231 }
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232
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233 octave_value
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234 octave_perm_matrix::convert_to_str_internal (bool pad, bool force, char type) const
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235 {
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236 return to_dense ().convert_to_str_internal (pad, force, type);
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237 }
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238
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239 bool
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240 octave_perm_matrix::save_ascii (std::ostream& os)
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241 {
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242 // FIXME: this should probably save the matrix as permutation.
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243 return to_dense ().save_ascii (os);
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244 }
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245
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246 bool
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247 octave_perm_matrix::save_binary (std::ostream& os, bool& save_as_floats)
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248 {
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249 return to_dense ().save_binary (os, save_as_floats);
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250 }
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251
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252 #if defined (HAVE_HDF5)
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253
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254 bool
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255 octave_perm_matrix::save_hdf5 (hid_t loc_id, const char *name, bool save_as_floats)
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256 {
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257 return to_dense ().save_hdf5 (loc_id, name, save_as_floats);
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258 }
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259
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260 #endif
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261
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262 void
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263 octave_perm_matrix::print_raw (std::ostream& os,
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264 bool pr_as_read_syntax) const
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265 {
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266 return to_dense ().print_raw (os, pr_as_read_syntax);
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267 }
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268
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269 mxArray *
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270 octave_perm_matrix::as_mxArray (void) const
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271 {
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272 return to_dense ().as_mxArray ();
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273 }
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274
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275 bool
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276 octave_perm_matrix::print_as_scalar (void) const
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277 {
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278 dim_vector dv = dims ();
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279
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280 return (dv.all_ones () || dv.any_zero ());
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281 }
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282
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283 void
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284 octave_perm_matrix::print (std::ostream& os, bool pr_as_read_syntax) const
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285 {
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286 to_dense ().print (os, pr_as_read_syntax);
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287 }
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288
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289 int
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290 octave_perm_matrix::write (octave_stream& os, int block_size,
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291 oct_data_conv::data_type output_type, int skip,
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292 oct_mach_info::float_format flt_fmt) const
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293 {
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294 return to_dense ().write (os, block_size, output_type, skip, flt_fmt);
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295 }
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296
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297 void
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298 octave_perm_matrix::print_info (std::ostream& os,
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299 const std::string& prefix) const
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300 {
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301 matrix.print_info (os, prefix);
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302 }
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303
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304
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305 octave_value
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306 octave_perm_matrix::to_dense (void) const
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307 {
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308 if (! dense_cache.is_defined ())
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309 dense_cache = Matrix (matrix);
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310
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311 return dense_cache;
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312 }
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313
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314 #define FORWARD_MAPPER(MAP) \
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315 octave_value \
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316 octave_perm_matrix::MAP (void) const \
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317 { \
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318 return to_dense ().MAP (); \
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319 }
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320
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321 FORWARD_MAPPER (erf)
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322 FORWARD_MAPPER (erfc)
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323 FORWARD_MAPPER (gamma)
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324 FORWARD_MAPPER (lgamma)
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325 FORWARD_MAPPER (abs)
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326 FORWARD_MAPPER (acos)
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327 FORWARD_MAPPER (acosh)
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328 FORWARD_MAPPER (angle)
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329 FORWARD_MAPPER (arg)
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330 FORWARD_MAPPER (asin)
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331 FORWARD_MAPPER (asinh)
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332 FORWARD_MAPPER (atan)
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333 FORWARD_MAPPER (atanh)
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334 FORWARD_MAPPER (ceil)
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335 FORWARD_MAPPER (conj)
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336 FORWARD_MAPPER (cos)
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337 FORWARD_MAPPER (cosh)
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338 FORWARD_MAPPER (exp)
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339 FORWARD_MAPPER (expm1)
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340 FORWARD_MAPPER (fix)
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341 FORWARD_MAPPER (floor)
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342 FORWARD_MAPPER (imag)
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343 FORWARD_MAPPER (log)
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344 FORWARD_MAPPER (log2)
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345 FORWARD_MAPPER (log10)
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346 FORWARD_MAPPER (log1p)
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347 FORWARD_MAPPER (real)
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348 FORWARD_MAPPER (round)
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349 FORWARD_MAPPER (roundb)
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350 FORWARD_MAPPER (signum)
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351 FORWARD_MAPPER (sin)
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352 FORWARD_MAPPER (sinh)
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353 FORWARD_MAPPER (sqrt)
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354 FORWARD_MAPPER (tan)
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355 FORWARD_MAPPER (tanh)
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356 FORWARD_MAPPER (finite)
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357 FORWARD_MAPPER (isinf)
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358 FORWARD_MAPPER (isna)
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359 FORWARD_MAPPER (isnan)
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360
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361 DEFINE_OCTAVE_ALLOCATOR (octave_perm_matrix);
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362
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363 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_perm_matrix,
445d27d79f4e support permutation matrix objects
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364 "permutation matrix", "double");
445d27d79f4e support permutation matrix objects
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365
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366 static octave_base_value *
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367 default_numeric_conversion_function (const octave_base_value& a)
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368 {
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369 CAST_CONV_ARG (const octave_perm_matrix&);
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370
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371 return new octave_matrix (v.matrix_value ());
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372 }
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373
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374 octave_base_value::type_conv_info
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375 octave_perm_matrix::numeric_conversion_function (void) const
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376 {
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377 return octave_base_value::type_conv_info (default_numeric_conversion_function,
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378 octave_matrix::static_type_id ());
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379 }
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380
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381 static octave_base_value *
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382 default_numeric_demotion_function (const octave_base_value& a)
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383 {
445d27d79f4e support permutation matrix objects
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384 CAST_CONV_ARG (const octave_perm_matrix&);
445d27d79f4e support permutation matrix objects
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385
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386 return new octave_float_perm_matrix (v.perm_matrix_value ());
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387 }
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388
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389 octave_base_value::type_conv_info
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390 octave_perm_matrix::numeric_demotion_function (void) const
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391 {
445d27d79f4e support permutation matrix objects
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392 return octave_base_value::type_conv_info (default_numeric_demotion_function,
445d27d79f4e support permutation matrix objects
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393 octave_float_perm_matrix::static_type_id ());
445d27d79f4e support permutation matrix objects
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394 }
445d27d79f4e support permutation matrix objects
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395
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396 octave_base_value *
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397 octave_perm_matrix::try_narrowing_conversion (void)
445d27d79f4e support permutation matrix objects
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398 {
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399 octave_base_value *retval = 0;
445d27d79f4e support permutation matrix objects
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400
445d27d79f4e support permutation matrix objects
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401 if (matrix.nelem () == 1)
445d27d79f4e support permutation matrix objects
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402 retval = new octave_scalar (matrix (0, 0));
445d27d79f4e support permutation matrix objects
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403
445d27d79f4e support permutation matrix objects
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404 return retval;
445d27d79f4e support permutation matrix objects
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405 }
445d27d79f4e support permutation matrix objects
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406