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annotate src/ov-perm.cc @ 8381:ad896677a2e2

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implement binary saving of diag & perm matrices
author Jaroslav Hajek <highegg@gmail.com>
date Mon, 08 Dec 2008 12:31:57 +0100
parents c43481a19bfe
children f00578b495e9
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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 "byte-swap.h"
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28
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29 #include "ov-perm.h"
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30 #include "ov-flt-perm.h"
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31 #include "ov-re-mat.h"
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32 #include "ov-scalar.h"
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33 #include "error.h"
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34 #include "gripes.h"
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35 #include "ops.h"
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36
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37 #include "ls-oct-ascii.h"
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38
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39 octave_value
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40 octave_perm_matrix::subsref (const std::string& type,
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41 const std::list<octave_value_list>& idx)
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42 {
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43 octave_value retval;
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44
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45 switch (type[0])
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46 {
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47 case '(':
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48 retval = do_index_op (idx.front ());
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49 break;
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50
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51 case '{':
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52 case '.':
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53 {
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54 std::string nm = type_name ();
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55 error ("%s cannot be indexed with %c", nm.c_str (), type[0]);
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56 }
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57 break;
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58
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59 default:
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60 panic_impossible ();
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61 }
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62
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63 return retval.next_subsref (type, idx);
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64 }
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65
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66 octave_value
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67 octave_perm_matrix::do_index_op (const octave_value_list& idx,
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68 bool resize_ok)
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69 {
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70 octave_value retval;
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71 octave_idx_type nidx = idx.length ();
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72 idx_vector idx0, idx1;
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73 if (nidx == 2)
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74 {
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75 idx0 = idx(0).index_vector ();
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76 idx1 = idx(1).index_vector ();
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77 }
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78
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79 // This hack is to allow constructing permutation matrices using
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80 // eye(n)(p,:), eye(n)(:,q) && eye(n)(p,q) where p & q are permutation
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81 // vectors.
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82 // Note that, for better consistency, eye(n)(:,:) still converts to a full
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83 // matrix.
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84 if (! error_state && nidx == 2)
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85 {
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86 bool left = idx0.is_permutation (matrix.rows ());
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87 bool right = idx1.is_permutation (matrix.cols ());
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88
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89 if (left && right)
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90 {
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91 if (idx0.is_colon ()) left = false;
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92 if (idx1.is_colon ()) right = false;
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93 if (left || right)
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94 {
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95 PermMatrix p = matrix;
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96 if (left)
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97 p = PermMatrix (idx0, false) * p;
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98 if (right)
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99 p = p * PermMatrix (idx1, true);
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100 retval = octave_value (p, is_single_type ());
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101 }
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102 }
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103 }
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104
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105 // if error_state is set, we've already griped.
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106 if (! error_state && ! retval.is_defined ())
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107 {
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108 if (nidx == 2 && ! resize_ok &&
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109 idx0.is_scalar () && idx1.is_scalar ())
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110 {
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111 retval = matrix.checkelem (idx0(0), idx1(0));
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112 }
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113 else
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114 retval = to_dense ().do_index_op (idx, resize_ok);
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115 }
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116
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117 return retval;
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118 }
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119
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120 bool
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121 octave_perm_matrix::is_true (void) const
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122 {
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123 return to_dense ().is_true ();
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124 }
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125
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126 bool
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127 octave_perm_matrix::valid_as_scalar_index (void) const
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128 {
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129 return false;
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130 }
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131
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132 double
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133 octave_perm_matrix::double_value (bool) const
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134 {
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135 double retval = lo_ieee_nan_value ();
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136
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137 if (numel () > 0)
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138 {
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139 gripe_implicit_conversion ("Octave:array-as-scalar",
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140 type_name (), "real scalar");
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141
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142 retval = matrix (0, 0);
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143 }
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144 else
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145 gripe_invalid_conversion (type_name (), "real scalar");
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146
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147 return retval;
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148 }
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149
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150 float
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151 octave_perm_matrix::float_value (bool) const
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152 {
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153 float retval = lo_ieee_float_nan_value ();
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154
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155 if (numel () > 0)
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156 {
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157 gripe_implicit_conversion ("Octave:array-as-scalar",
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158 type_name (), "real scalar");
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159
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160 retval = matrix (0, 0);
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161 }
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162 else
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163 gripe_invalid_conversion (type_name (), "real scalar");
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164
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165 return retval;
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166 }
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167
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168 Complex
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169 octave_perm_matrix::complex_value (bool) const
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170 {
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171 double tmp = lo_ieee_nan_value ();
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172
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173 Complex retval (tmp, tmp);
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174
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175 if (rows () > 0 && columns () > 0)
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176 {
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177 gripe_implicit_conversion ("Octave:array-as-scalar",
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178 type_name (), "complex scalar");
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179
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180 retval = matrix (0, 0);
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181 }
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182 else
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183 gripe_invalid_conversion (type_name (), "complex scalar");
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184
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185 return retval;
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186 }
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187
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188 FloatComplex
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189 octave_perm_matrix::float_complex_value (bool) const
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190 {
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191 float tmp = lo_ieee_float_nan_value ();
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192
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193 FloatComplex retval (tmp, tmp);
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194
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195 if (rows () > 0 && columns () > 0)
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196 {
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197 gripe_implicit_conversion ("Octave:array-as-scalar",
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198 type_name (), "complex scalar");
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199
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200 retval = matrix (0, 0);
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201 }
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202 else
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203 gripe_invalid_conversion (type_name (), "complex scalar");
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204
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205 return retval;
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206 }
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207
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208 #define FORWARD_MATRIX_VALUE(TYPE, PREFIX) \
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209 TYPE \
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210 octave_perm_matrix::PREFIX ## _value (bool frc_str_conv) const \
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211 { \
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212 return to_dense ().PREFIX ## _value (frc_str_conv); \
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213 }
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214
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215 FORWARD_MATRIX_VALUE (Matrix, matrix)
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216 FORWARD_MATRIX_VALUE (FloatMatrix, float_matrix)
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217 FORWARD_MATRIX_VALUE (ComplexMatrix, complex_matrix)
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218 FORWARD_MATRIX_VALUE (FloatComplexMatrix, float_complex_matrix)
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219
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220 FORWARD_MATRIX_VALUE (NDArray, array)
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221 FORWARD_MATRIX_VALUE (FloatNDArray, float_array)
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222 FORWARD_MATRIX_VALUE (ComplexNDArray, complex_array)
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223 FORWARD_MATRIX_VALUE (FloatComplexNDArray, float_complex_array)
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224
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225 FORWARD_MATRIX_VALUE (boolNDArray, bool_array)
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226 FORWARD_MATRIX_VALUE (charNDArray, char_array)
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227
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228 FORWARD_MATRIX_VALUE (SparseMatrix, sparse_matrix)
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229 FORWARD_MATRIX_VALUE (SparseComplexMatrix, sparse_complex_matrix)
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230
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231 idx_vector
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232 octave_perm_matrix::index_vector (void) const
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233 {
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234 return to_dense ().index_vector ();
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235 }
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236
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237 octave_value
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238 octave_perm_matrix::convert_to_str_internal (bool pad, bool force, char type) const
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239 {
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240 return to_dense ().convert_to_str_internal (pad, force, type);
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241 }
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242
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243 bool
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244 octave_perm_matrix::save_ascii (std::ostream& os)
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245 {
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246 typedef octave_int<octave_idx_type> idx_int_type;
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247
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248 os << "# size: " << matrix.rows () << "\n";
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249 os << "# orient: " << (matrix.is_col_perm () ? 'c' : 'r') << '\n';
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250
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251 Array<octave_idx_type> pvec = matrix.pvec ();
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252 octave_idx_type n = pvec.length ();
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253 ColumnVector tmp (n);
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254 for (octave_idx_type i = 0; i < n; i++) tmp(i) = pvec(i) + 1;
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255 os << tmp;
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256
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257 return true;
8367
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258 }
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259
445d27d79f4e support permutation matrix objects
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260 bool
8376
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261 octave_perm_matrix::load_ascii (std::istream& is)
8367
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262 {
8376
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263 typedef octave_int<octave_idx_type> idx_int_type;
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264 octave_idx_type n;
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265 bool success = true;
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266 char orient;
8367
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267
8376
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268 if (extract_keyword (is, "size", n, true)
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269 && extract_keyword (is, "orient", orient, true))
c43481a19bfe implement ASCII saving of diag & perm matrices
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270 {
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271 bool colp = orient == 'c';
c43481a19bfe implement ASCII saving of diag & perm matrices
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272 dim_vector dv (n);
c43481a19bfe implement ASCII saving of diag & perm matrices
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273 ColumnVector tmp (n);
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274 is >> tmp;
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275 if (!is)
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276 {
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277 error ("load: failed to load permutation matrix constant");
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278 success = false;
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279 }
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280 else
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281 {
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282 Array<octave_idx_type> pvec (n);
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283 for (octave_idx_type i = 0; i < n; i++) pvec(i) = tmp(i) - 1;
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284 matrix = PermMatrix (pvec, colp);
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285
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286 // Invalidate cache. Probably not necessary, but safe.
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287 dense_cache = octave_value ();
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288 }
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289 }
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290 else
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291 {
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292 error ("load: failed to extract size & orientation");
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293 success = false;
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294 }
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295
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296 return success;
8367
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297 }
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298
8381
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299 bool
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300 octave_perm_matrix::save_binary (std::ostream& os, bool&)
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301 {
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302
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303 int32_t size = matrix.rows ();
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304 bool colp = matrix.is_col_perm ();
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diff changeset
305 os.write (reinterpret_cast<char *> (&size), 4);
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306 os.write (reinterpret_cast<char *> (&colp), 1);
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307 os.write (reinterpret_cast<const char *> (matrix.data ()), matrix.byte_size());
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diff changeset
308
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309 return true;
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310 }
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311
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312 bool
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313 octave_perm_matrix::load_binary (std::istream& is, bool swap,
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314 oct_mach_info::float_format )
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315 {
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diff changeset
316 int32_t size;
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317 bool colp;
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318 if (! (is.read (reinterpret_cast<char *> (&size), 4)
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319 && is.read (reinterpret_cast<char *> (&colp), 1)))
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320 return false;
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321
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322 MArray<octave_idx_type> m (size);
ad896677a2e2 implement binary saving of diag & perm matrices
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323
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324 if (! is.read (reinterpret_cast<char *> (m.fortran_vec ()), m.byte_size ()))
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325 return false;
ad896677a2e2 implement binary saving of diag & perm matrices
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326
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327 if (swap)
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328 {
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329 int nel = m.numel ();
ad896677a2e2 implement binary saving of diag & perm matrices
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330 for (int i = 0; i < nel; i++)
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331 switch (sizeof (octave_idx_type))
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332 {
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333 case 8:
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334 swap_bytes<8> (&m(i));
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335 break;
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336 case 4:
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337 swap_bytes<4> (&m(i));
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338 break;
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339 case 2:
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340 swap_bytes<2> (&m(i));
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341 break;
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342 case 1:
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343 default:
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344 break;
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345 }
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346 }
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347
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348 matrix = PermMatrix (m, colp);
ad896677a2e2 implement binary saving of diag & perm matrices
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349 return true;
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350 }
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351
8367
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352 void
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353 octave_perm_matrix::print_raw (std::ostream& os,
8381
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354 bool pr_as_read_syntax) const
8367
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355 {
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356 return to_dense ().print_raw (os, pr_as_read_syntax);
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357 }
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358
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359 mxArray *
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360 octave_perm_matrix::as_mxArray (void) const
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361 {
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362 return to_dense ().as_mxArray ();
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363 }
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364
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365 bool
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366 octave_perm_matrix::print_as_scalar (void) const
445d27d79f4e support permutation matrix objects
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367 {
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368 dim_vector dv = dims ();
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369
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370 return (dv.all_ones () || dv.any_zero ());
445d27d79f4e support permutation matrix objects
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371 }
445d27d79f4e support permutation matrix objects
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372
445d27d79f4e support permutation matrix objects
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373 void
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374 octave_perm_matrix::print (std::ostream& os, bool pr_as_read_syntax) const
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375 {
445d27d79f4e support permutation matrix objects
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376 to_dense ().print (os, pr_as_read_syntax);
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377 }
445d27d79f4e support permutation matrix objects
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378
445d27d79f4e support permutation matrix objects
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379 int
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380 octave_perm_matrix::write (octave_stream& os, int block_size,
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381 oct_data_conv::data_type output_type, int skip,
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382 oct_mach_info::float_format flt_fmt) const
445d27d79f4e support permutation matrix objects
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383 {
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diff changeset
384 return to_dense ().write (os, block_size, output_type, skip, flt_fmt);
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385 }
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386
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387 void
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388 octave_perm_matrix::print_info (std::ostream& os,
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389 const std::string& prefix) const
445d27d79f4e support permutation matrix objects
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390 {
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391 matrix.print_info (os, prefix);
445d27d79f4e support permutation matrix objects
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392 }
445d27d79f4e support permutation matrix objects
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parents:
diff changeset
393
445d27d79f4e support permutation matrix objects
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parents:
diff changeset
394
445d27d79f4e support permutation matrix objects
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diff changeset
395 octave_value
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diff changeset
396 octave_perm_matrix::to_dense (void) const
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diff changeset
397 {
445d27d79f4e support permutation matrix objects
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diff changeset
398 if (! dense_cache.is_defined ())
445d27d79f4e support permutation matrix objects
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diff changeset
399 dense_cache = Matrix (matrix);
445d27d79f4e support permutation matrix objects
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diff changeset
400
445d27d79f4e support permutation matrix objects
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diff changeset
401 return dense_cache;
445d27d79f4e support permutation matrix objects
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parents:
diff changeset
402 }
445d27d79f4e support permutation matrix objects
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parents:
diff changeset
403
445d27d79f4e support permutation matrix objects
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parents:
diff changeset
404 #define FORWARD_MAPPER(MAP) \
445d27d79f4e support permutation matrix objects
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parents:
diff changeset
405 octave_value \
445d27d79f4e support permutation matrix objects
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parents:
diff changeset
406 octave_perm_matrix::MAP (void) const \
445d27d79f4e support permutation matrix objects
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parents:
diff changeset
407 { \
445d27d79f4e support permutation matrix objects
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parents:
diff changeset
408 return to_dense ().MAP (); \
445d27d79f4e support permutation matrix objects
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parents:
diff changeset
409 }
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
410
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
411 FORWARD_MAPPER (erf)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
412 FORWARD_MAPPER (erfc)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
413 FORWARD_MAPPER (gamma)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
414 FORWARD_MAPPER (lgamma)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
415 FORWARD_MAPPER (abs)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
416 FORWARD_MAPPER (acos)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
417 FORWARD_MAPPER (acosh)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
418 FORWARD_MAPPER (angle)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
419 FORWARD_MAPPER (arg)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
420 FORWARD_MAPPER (asin)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
421 FORWARD_MAPPER (asinh)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
422 FORWARD_MAPPER (atan)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
423 FORWARD_MAPPER (atanh)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
424 FORWARD_MAPPER (ceil)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
425 FORWARD_MAPPER (conj)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
426 FORWARD_MAPPER (cos)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
427 FORWARD_MAPPER (cosh)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
428 FORWARD_MAPPER (exp)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
429 FORWARD_MAPPER (expm1)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
430 FORWARD_MAPPER (fix)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
431 FORWARD_MAPPER (floor)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
432 FORWARD_MAPPER (imag)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
433 FORWARD_MAPPER (log)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
434 FORWARD_MAPPER (log2)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
435 FORWARD_MAPPER (log10)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
436 FORWARD_MAPPER (log1p)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
437 FORWARD_MAPPER (real)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
438 FORWARD_MAPPER (round)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
439 FORWARD_MAPPER (roundb)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
440 FORWARD_MAPPER (signum)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
441 FORWARD_MAPPER (sin)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
442 FORWARD_MAPPER (sinh)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
443 FORWARD_MAPPER (sqrt)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
444 FORWARD_MAPPER (tan)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
445 FORWARD_MAPPER (tanh)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
446 FORWARD_MAPPER (finite)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
447 FORWARD_MAPPER (isinf)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
448 FORWARD_MAPPER (isna)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
449 FORWARD_MAPPER (isnan)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
450
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
451 DEFINE_OCTAVE_ALLOCATOR (octave_perm_matrix);
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
452
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
453 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_perm_matrix,
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
454 "permutation matrix", "double");
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
455
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
456 static octave_base_value *
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
457 default_numeric_conversion_function (const octave_base_value& a)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
458 {
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
459 CAST_CONV_ARG (const octave_perm_matrix&);
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
460
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
461 return new octave_matrix (v.matrix_value ());
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
462 }
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
463
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
464 octave_base_value::type_conv_info
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
465 octave_perm_matrix::numeric_conversion_function (void) const
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
466 {
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
467 return octave_base_value::type_conv_info (default_numeric_conversion_function,
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
468 octave_matrix::static_type_id ());
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
469 }
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
470
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
471 static octave_base_value *
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
472 default_numeric_demotion_function (const octave_base_value& a)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
473 {
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
474 CAST_CONV_ARG (const octave_perm_matrix&);
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
475
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
476 return new octave_float_perm_matrix (v.perm_matrix_value ());
445d27d79f4e support permutation matrix objects
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477 }
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478
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479 octave_base_value::type_conv_info
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480 octave_perm_matrix::numeric_demotion_function (void) const
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481 {
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482 return octave_base_value::type_conv_info (default_numeric_demotion_function,
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483 octave_float_perm_matrix::static_type_id ());
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484 }
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485
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486 octave_base_value *
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487 octave_perm_matrix::try_narrowing_conversion (void)
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488 {
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489 octave_base_value *retval = 0;
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490
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491 if (matrix.nelem () == 1)
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492 retval = new octave_scalar (matrix (0, 0));
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493
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494 return retval;
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495 }
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496