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annotate src/ov-perm.cc @ 8376:c43481a19bfe

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implement ASCII saving of diag & perm matrices
author Jaroslav Hajek <highegg@gmail.com>
date Fri, 05 Dec 2008 12:51:48 +0100
parents 445d27d79f4e
children ad896677a2e2
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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 #include "ls-oct-ascii.h"
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36
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37 octave_value
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38 octave_perm_matrix::subsref (const std::string& type,
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39 const std::list<octave_value_list>& idx)
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40 {
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41 octave_value retval;
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42
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43 switch (type[0])
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44 {
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45 case '(':
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46 retval = do_index_op (idx.front ());
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47 break;
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48
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49 case '{':
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50 case '.':
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51 {
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52 std::string nm = type_name ();
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53 error ("%s cannot be indexed with %c", nm.c_str (), type[0]);
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54 }
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55 break;
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56
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57 default:
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58 panic_impossible ();
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59 }
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60
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61 return retval.next_subsref (type, idx);
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62 }
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63
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64 octave_value
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65 octave_perm_matrix::do_index_op (const octave_value_list& idx,
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66 bool resize_ok)
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67 {
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68 octave_value retval;
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69 octave_idx_type nidx = idx.length ();
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70 idx_vector idx0, idx1;
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71 if (nidx == 2)
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72 {
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73 idx0 = idx(0).index_vector ();
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74 idx1 = idx(1).index_vector ();
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75 }
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76
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77 // This hack is to allow constructing permutation matrices using
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78 // eye(n)(p,:), eye(n)(:,q) && eye(n)(p,q) where p & q are permutation
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79 // vectors.
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80 // Note that, for better consistency, eye(n)(:,:) still converts to a full
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81 // matrix.
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82 if (! error_state && nidx == 2)
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83 {
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84 bool left = idx0.is_permutation (matrix.rows ());
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85 bool right = idx1.is_permutation (matrix.cols ());
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86
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87 if (left && right)
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88 {
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89 if (idx0.is_colon ()) left = false;
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90 if (idx1.is_colon ()) right = false;
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91 if (left || right)
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92 {
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93 PermMatrix p = matrix;
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94 if (left)
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95 p = PermMatrix (idx0, false) * p;
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96 if (right)
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97 p = p * PermMatrix (idx1, true);
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98 retval = octave_value (p, is_single_type ());
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99 }
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100 }
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101 }
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102
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103 // if error_state is set, we've already griped.
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104 if (! error_state && ! retval.is_defined ())
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105 {
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106 if (nidx == 2 && ! resize_ok &&
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107 idx0.is_scalar () && idx1.is_scalar ())
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108 {
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109 retval = matrix.checkelem (idx0(0), idx1(0));
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110 }
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111 else
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112 retval = to_dense ().do_index_op (idx, resize_ok);
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113 }
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114
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115 return retval;
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116 }
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117
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118 bool
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119 octave_perm_matrix::is_true (void) const
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120 {
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121 return to_dense ().is_true ();
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122 }
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123
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124 bool
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125 octave_perm_matrix::valid_as_scalar_index (void) const
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126 {
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127 return false;
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128 }
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129
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130 double
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131 octave_perm_matrix::double_value (bool) const
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132 {
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133 double retval = lo_ieee_nan_value ();
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134
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135 if (numel () > 0)
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136 {
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137 gripe_implicit_conversion ("Octave:array-as-scalar",
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138 type_name (), "real scalar");
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139
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140 retval = matrix (0, 0);
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141 }
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142 else
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143 gripe_invalid_conversion (type_name (), "real scalar");
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144
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145 return retval;
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146 }
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147
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148 float
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149 octave_perm_matrix::float_value (bool) const
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150 {
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151 float retval = lo_ieee_float_nan_value ();
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152
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153 if (numel () > 0)
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154 {
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155 gripe_implicit_conversion ("Octave:array-as-scalar",
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156 type_name (), "real scalar");
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157
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158 retval = matrix (0, 0);
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159 }
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160 else
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161 gripe_invalid_conversion (type_name (), "real scalar");
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162
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163 return retval;
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164 }
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165
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166 Complex
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167 octave_perm_matrix::complex_value (bool) const
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168 {
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169 double tmp = lo_ieee_nan_value ();
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170
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171 Complex retval (tmp, tmp);
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172
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173 if (rows () > 0 && columns () > 0)
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174 {
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175 gripe_implicit_conversion ("Octave:array-as-scalar",
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176 type_name (), "complex scalar");
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177
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178 retval = matrix (0, 0);
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179 }
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180 else
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181 gripe_invalid_conversion (type_name (), "complex scalar");
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182
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183 return retval;
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184 }
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185
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186 FloatComplex
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187 octave_perm_matrix::float_complex_value (bool) const
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188 {
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189 float tmp = lo_ieee_float_nan_value ();
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190
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191 FloatComplex retval (tmp, tmp);
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192
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193 if (rows () > 0 && columns () > 0)
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194 {
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195 gripe_implicit_conversion ("Octave:array-as-scalar",
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196 type_name (), "complex scalar");
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197
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198 retval = matrix (0, 0);
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199 }
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200 else
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201 gripe_invalid_conversion (type_name (), "complex scalar");
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202
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203 return retval;
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204 }
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205
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206 #define FORWARD_MATRIX_VALUE(TYPE, PREFIX) \
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207 TYPE \
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208 octave_perm_matrix::PREFIX ## _value (bool frc_str_conv) const \
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209 { \
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210 return to_dense ().PREFIX ## _value (frc_str_conv); \
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211 }
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212
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213 FORWARD_MATRIX_VALUE (Matrix, matrix)
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214 FORWARD_MATRIX_VALUE (FloatMatrix, float_matrix)
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215 FORWARD_MATRIX_VALUE (ComplexMatrix, complex_matrix)
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216 FORWARD_MATRIX_VALUE (FloatComplexMatrix, float_complex_matrix)
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217
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218 FORWARD_MATRIX_VALUE (NDArray, array)
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219 FORWARD_MATRIX_VALUE (FloatNDArray, float_array)
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220 FORWARD_MATRIX_VALUE (ComplexNDArray, complex_array)
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221 FORWARD_MATRIX_VALUE (FloatComplexNDArray, float_complex_array)
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222
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223 FORWARD_MATRIX_VALUE (boolNDArray, bool_array)
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224 FORWARD_MATRIX_VALUE (charNDArray, char_array)
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225
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226 FORWARD_MATRIX_VALUE (SparseMatrix, sparse_matrix)
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227 FORWARD_MATRIX_VALUE (SparseComplexMatrix, sparse_complex_matrix)
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228
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229 idx_vector
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230 octave_perm_matrix::index_vector (void) const
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231 {
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232 return to_dense ().index_vector ();
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233 }
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234
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235 octave_value
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236 octave_perm_matrix::convert_to_str_internal (bool pad, bool force, char type) const
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237 {
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238 return to_dense ().convert_to_str_internal (pad, force, type);
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239 }
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240
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241 bool
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242 octave_perm_matrix::save_ascii (std::ostream& os)
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243 {
8376
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244 typedef octave_int<octave_idx_type> idx_int_type;
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245
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246 os << "# size: " << matrix.rows () << "\n";
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247 os << "# orient: " << (matrix.is_col_perm () ? 'c' : 'r') << '\n';
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248
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249 Array<octave_idx_type> pvec = matrix.pvec ();
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250 octave_idx_type n = pvec.length ();
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251 ColumnVector tmp (n);
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252 for (octave_idx_type i = 0; i < n; i++) tmp(i) = pvec(i) + 1;
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253 os << tmp;
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254
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255 return true;
8367
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256 }
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257
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258 bool
8376
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259 octave_perm_matrix::load_ascii (std::istream& is)
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260 {
8376
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261 typedef octave_int<octave_idx_type> idx_int_type;
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262 octave_idx_type n;
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263 bool success = true;
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264 char orient;
8367
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265
8376
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266 if (extract_keyword (is, "size", n, true)
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267 && extract_keyword (is, "orient", orient, true))
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268 {
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269 bool colp = orient == 'c';
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270 dim_vector dv (n);
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271 ColumnVector tmp (n);
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272 is >> tmp;
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273 if (!is)
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274 {
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275 error ("load: failed to load permutation matrix constant");
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276 success = false;
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277 }
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278 else
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279 {
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280 Array<octave_idx_type> pvec (n);
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281 for (octave_idx_type i = 0; i < n; i++) pvec(i) = tmp(i) - 1;
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282 matrix = PermMatrix (pvec, colp);
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283
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284 // Invalidate cache. Probably not necessary, but safe.
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285 dense_cache = octave_value ();
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286 }
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287 }
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288 else
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289 {
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290 error ("load: failed to extract size & orientation");
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291 success = false;
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292 }
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293
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294 return success;
8367
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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_raw (std::ostream& os,
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299 bool pr_as_read_syntax) const
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300 {
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301 return to_dense ().print_raw (os, pr_as_read_syntax);
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302 }
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303
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304 mxArray *
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305 octave_perm_matrix::as_mxArray (void) const
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306 {
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307 return to_dense ().as_mxArray ();
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308 }
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309
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310 bool
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311 octave_perm_matrix::print_as_scalar (void) const
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312 {
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313 dim_vector dv = dims ();
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314
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315 return (dv.all_ones () || dv.any_zero ());
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316 }
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317
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318 void
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319 octave_perm_matrix::print (std::ostream& os, bool pr_as_read_syntax) const
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320 {
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321 to_dense ().print (os, pr_as_read_syntax);
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322 }
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323
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324 int
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325 octave_perm_matrix::write (octave_stream& os, int block_size,
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326 oct_data_conv::data_type output_type, int skip,
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327 oct_mach_info::float_format flt_fmt) const
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328 {
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329 return to_dense ().write (os, block_size, output_type, skip, flt_fmt);
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330 }
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331
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332 void
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333 octave_perm_matrix::print_info (std::ostream& os,
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334 const std::string& prefix) const
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335 {
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336 matrix.print_info (os, prefix);
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337 }
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338
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339
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340 octave_value
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341 octave_perm_matrix::to_dense (void) const
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342 {
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343 if (! dense_cache.is_defined ())
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344 dense_cache = Matrix (matrix);
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345
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346 return dense_cache;
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347 }
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348
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349 #define FORWARD_MAPPER(MAP) \
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350 octave_value \
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351 octave_perm_matrix::MAP (void) const \
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352 { \
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353 return to_dense ().MAP (); \
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354 }
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355
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356 FORWARD_MAPPER (erf)
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357 FORWARD_MAPPER (erfc)
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358 FORWARD_MAPPER (gamma)
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359 FORWARD_MAPPER (lgamma)
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360 FORWARD_MAPPER (abs)
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361 FORWARD_MAPPER (acos)
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362 FORWARD_MAPPER (acosh)
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363 FORWARD_MAPPER (angle)
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364 FORWARD_MAPPER (arg)
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365 FORWARD_MAPPER (asin)
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366 FORWARD_MAPPER (asinh)
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367 FORWARD_MAPPER (atan)
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368 FORWARD_MAPPER (atanh)
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369 FORWARD_MAPPER (ceil)
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370 FORWARD_MAPPER (conj)
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371 FORWARD_MAPPER (cos)
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372 FORWARD_MAPPER (cosh)
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373 FORWARD_MAPPER (exp)
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374 FORWARD_MAPPER (expm1)
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375 FORWARD_MAPPER (fix)
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376 FORWARD_MAPPER (floor)
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377 FORWARD_MAPPER (imag)
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378 FORWARD_MAPPER (log)
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379 FORWARD_MAPPER (log2)
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380 FORWARD_MAPPER (log10)
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381 FORWARD_MAPPER (log1p)
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382 FORWARD_MAPPER (real)
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383 FORWARD_MAPPER (round)
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384 FORWARD_MAPPER (roundb)
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385 FORWARD_MAPPER (signum)
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386 FORWARD_MAPPER (sin)
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387 FORWARD_MAPPER (sinh)
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388 FORWARD_MAPPER (sqrt)
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389 FORWARD_MAPPER (tan)
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390 FORWARD_MAPPER (tanh)
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391 FORWARD_MAPPER (finite)
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392 FORWARD_MAPPER (isinf)
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393 FORWARD_MAPPER (isna)
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394 FORWARD_MAPPER (isnan)
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395
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396 DEFINE_OCTAVE_ALLOCATOR (octave_perm_matrix);
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397
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398 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_perm_matrix,
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399 "permutation matrix", "double");
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400
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401 static octave_base_value *
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402 default_numeric_conversion_function (const octave_base_value& a)
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403 {
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404 CAST_CONV_ARG (const octave_perm_matrix&);
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405
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406 return new octave_matrix (v.matrix_value ());
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407 }
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408
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409 octave_base_value::type_conv_info
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410 octave_perm_matrix::numeric_conversion_function (void) const
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411 {
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412 return octave_base_value::type_conv_info (default_numeric_conversion_function,
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413 octave_matrix::static_type_id ());
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414 }
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415
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416 static octave_base_value *
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417 default_numeric_demotion_function (const octave_base_value& a)
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418 {
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419 CAST_CONV_ARG (const octave_perm_matrix&);
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420
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421 return new octave_float_perm_matrix (v.perm_matrix_value ());
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422 }
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423
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424 octave_base_value::type_conv_info
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425 octave_perm_matrix::numeric_demotion_function (void) const
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426 {
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427 return octave_base_value::type_conv_info (default_numeric_demotion_function,
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428 octave_float_perm_matrix::static_type_id ());
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429 }
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430
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431 octave_base_value *
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432 octave_perm_matrix::try_narrowing_conversion (void)
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433 {
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434 octave_base_value *retval = 0;
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435
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436 if (matrix.nelem () == 1)
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437 retval = new octave_scalar (matrix (0, 0));
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438
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439 return retval;
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440 }
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441