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annotate src/ov-perm.cc @ 8437:f00578b495e9

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remove valid_as_scalar_index
author Jaroslav Hajek <highegg@gmail.com>
date Sat, 27 Dec 2008 17:01:52 +0100
parents ad896677a2e2
children d17874a6f161
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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 double
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127 octave_perm_matrix::double_value (bool) const
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128 {
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129 double retval = lo_ieee_nan_value ();
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130
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131 if (numel () > 0)
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132 {
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133 gripe_implicit_conversion ("Octave:array-as-scalar",
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134 type_name (), "real scalar");
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135
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136 retval = matrix (0, 0);
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137 }
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138 else
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139 gripe_invalid_conversion (type_name (), "real scalar");
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140
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141 return retval;
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142 }
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143
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144 float
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145 octave_perm_matrix::float_value (bool) const
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146 {
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147 float retval = lo_ieee_float_nan_value ();
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148
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149 if (numel () > 0)
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150 {
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151 gripe_implicit_conversion ("Octave:array-as-scalar",
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152 type_name (), "real scalar");
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153
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154 retval = matrix (0, 0);
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155 }
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156 else
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157 gripe_invalid_conversion (type_name (), "real scalar");
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158
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159 return retval;
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160 }
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161
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162 Complex
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163 octave_perm_matrix::complex_value (bool) const
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164 {
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165 double tmp = lo_ieee_nan_value ();
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166
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167 Complex retval (tmp, tmp);
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168
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169 if (rows () > 0 && columns () > 0)
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170 {
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171 gripe_implicit_conversion ("Octave:array-as-scalar",
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172 type_name (), "complex scalar");
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173
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174 retval = matrix (0, 0);
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175 }
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176 else
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177 gripe_invalid_conversion (type_name (), "complex scalar");
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178
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179 return retval;
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180 }
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181
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182 FloatComplex
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183 octave_perm_matrix::float_complex_value (bool) const
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184 {
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185 float tmp = lo_ieee_float_nan_value ();
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186
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187 FloatComplex retval (tmp, tmp);
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188
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189 if (rows () > 0 && columns () > 0)
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190 {
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191 gripe_implicit_conversion ("Octave:array-as-scalar",
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192 type_name (), "complex scalar");
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193
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194 retval = matrix (0, 0);
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195 }
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196 else
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197 gripe_invalid_conversion (type_name (), "complex scalar");
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198
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199 return retval;
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200 }
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201
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202 #define FORWARD_MATRIX_VALUE(TYPE, PREFIX) \
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203 TYPE \
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204 octave_perm_matrix::PREFIX ## _value (bool frc_str_conv) const \
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205 { \
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206 return to_dense ().PREFIX ## _value (frc_str_conv); \
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207 }
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208
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209 FORWARD_MATRIX_VALUE (Matrix, matrix)
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210 FORWARD_MATRIX_VALUE (FloatMatrix, float_matrix)
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211 FORWARD_MATRIX_VALUE (ComplexMatrix, complex_matrix)
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212 FORWARD_MATRIX_VALUE (FloatComplexMatrix, float_complex_matrix)
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213
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214 FORWARD_MATRIX_VALUE (NDArray, array)
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215 FORWARD_MATRIX_VALUE (FloatNDArray, float_array)
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216 FORWARD_MATRIX_VALUE (ComplexNDArray, complex_array)
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217 FORWARD_MATRIX_VALUE (FloatComplexNDArray, float_complex_array)
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218
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219 FORWARD_MATRIX_VALUE (boolNDArray, bool_array)
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220 FORWARD_MATRIX_VALUE (charNDArray, char_array)
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221
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222 FORWARD_MATRIX_VALUE (SparseMatrix, sparse_matrix)
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223 FORWARD_MATRIX_VALUE (SparseComplexMatrix, sparse_complex_matrix)
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224
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225 idx_vector
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226 octave_perm_matrix::index_vector (void) const
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227 {
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228 return to_dense ().index_vector ();
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229 }
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230
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231 octave_value
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232 octave_perm_matrix::convert_to_str_internal (bool pad, bool force, char type) const
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233 {
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234 return to_dense ().convert_to_str_internal (pad, force, type);
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235 }
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236
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237 bool
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238 octave_perm_matrix::save_ascii (std::ostream& os)
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239 {
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240 typedef octave_int<octave_idx_type> idx_int_type;
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241
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242 os << "# size: " << matrix.rows () << "\n";
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243 os << "# orient: " << (matrix.is_col_perm () ? 'c' : 'r') << '\n';
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244
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245 Array<octave_idx_type> pvec = matrix.pvec ();
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246 octave_idx_type n = pvec.length ();
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247 ColumnVector tmp (n);
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248 for (octave_idx_type i = 0; i < n; i++) tmp(i) = pvec(i) + 1;
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249 os << tmp;
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250
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251 return true;
8367
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252 }
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253
445d27d79f4e support permutation matrix objects
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254 bool
8376
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255 octave_perm_matrix::load_ascii (std::istream& is)
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256 {
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257 typedef octave_int<octave_idx_type> idx_int_type;
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258 octave_idx_type n;
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259 bool success = true;
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260 char orient;
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261
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262 if (extract_keyword (is, "size", n, true)
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263 && extract_keyword (is, "orient", orient, true))
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264 {
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265 bool colp = orient == 'c';
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266 dim_vector dv (n);
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267 ColumnVector tmp (n);
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268 is >> tmp;
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269 if (!is)
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270 {
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271 error ("load: failed to load permutation matrix constant");
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272 success = false;
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273 }
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274 else
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275 {
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276 Array<octave_idx_type> pvec (n);
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277 for (octave_idx_type i = 0; i < n; i++) pvec(i) = tmp(i) - 1;
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278 matrix = PermMatrix (pvec, colp);
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279
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280 // Invalidate cache. Probably not necessary, but safe.
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281 dense_cache = octave_value ();
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282 }
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283 }
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284 else
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285 {
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286 error ("load: failed to extract size & orientation");
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287 success = false;
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288 }
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289
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290 return success;
8367
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291 }
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292
8381
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293 bool
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294 octave_perm_matrix::save_binary (std::ostream& os, bool&)
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295 {
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296
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297 int32_t size = matrix.rows ();
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298 bool colp = matrix.is_col_perm ();
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299 os.write (reinterpret_cast<char *> (&size), 4);
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300 os.write (reinterpret_cast<char *> (&colp), 1);
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301 os.write (reinterpret_cast<const char *> (matrix.data ()), matrix.byte_size());
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302
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303 return true;
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304 }
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305
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306 bool
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307 octave_perm_matrix::load_binary (std::istream& is, bool swap,
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308 oct_mach_info::float_format )
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309 {
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310 int32_t size;
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311 bool colp;
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312 if (! (is.read (reinterpret_cast<char *> (&size), 4)
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313 && is.read (reinterpret_cast<char *> (&colp), 1)))
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314 return false;
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315
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diff changeset
316 MArray<octave_idx_type> m (size);
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317
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318 if (! is.read (reinterpret_cast<char *> (m.fortran_vec ()), m.byte_size ()))
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319 return false;
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320
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321 if (swap)
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322 {
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323 int nel = m.numel ();
ad896677a2e2 implement binary saving of diag & perm matrices
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324 for (int i = 0; i < nel; i++)
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325 switch (sizeof (octave_idx_type))
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326 {
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327 case 8:
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328 swap_bytes<8> (&m(i));
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329 break;
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330 case 4:
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331 swap_bytes<4> (&m(i));
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332 break;
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333 case 2:
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334 swap_bytes<2> (&m(i));
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335 break;
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336 case 1:
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337 default:
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338 break;
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339 }
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340 }
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341
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342 matrix = PermMatrix (m, colp);
ad896677a2e2 implement binary saving of diag & perm matrices
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343 return true;
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344 }
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345
8367
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346 void
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347 octave_perm_matrix::print_raw (std::ostream& os,
8381
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348 bool pr_as_read_syntax) const
8367
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349 {
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350 return to_dense ().print_raw (os, pr_as_read_syntax);
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351 }
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352
445d27d79f4e support permutation matrix objects
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353 mxArray *
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354 octave_perm_matrix::as_mxArray (void) const
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355 {
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356 return to_dense ().as_mxArray ();
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357 }
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358
445d27d79f4e support permutation matrix objects
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359 bool
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360 octave_perm_matrix::print_as_scalar (void) const
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361 {
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362 dim_vector dv = dims ();
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363
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364 return (dv.all_ones () || dv.any_zero ());
445d27d79f4e support permutation matrix objects
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365 }
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366
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367 void
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368 octave_perm_matrix::print (std::ostream& os, bool pr_as_read_syntax) const
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369 {
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370 to_dense ().print (os, pr_as_read_syntax);
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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 int
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374 octave_perm_matrix::write (octave_stream& os, int block_size,
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375 oct_data_conv::data_type output_type, int skip,
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376 oct_mach_info::float_format flt_fmt) const
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377 {
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378 return to_dense ().write (os, block_size, output_type, skip, flt_fmt);
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379 }
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380
445d27d79f4e support permutation matrix objects
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381 void
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382 octave_perm_matrix::print_info (std::ostream& os,
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383 const std::string& prefix) const
445d27d79f4e support permutation matrix objects
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384 {
445d27d79f4e support permutation matrix objects
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385 matrix.print_info (os, prefix);
445d27d79f4e support permutation matrix objects
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386 }
445d27d79f4e support permutation matrix objects
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387
445d27d79f4e support permutation matrix objects
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diff changeset
388
445d27d79f4e support permutation matrix objects
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389 octave_value
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390 octave_perm_matrix::to_dense (void) const
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391 {
445d27d79f4e support permutation matrix objects
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diff changeset
392 if (! dense_cache.is_defined ())
445d27d79f4e support permutation matrix objects
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393 dense_cache = Matrix (matrix);
445d27d79f4e support permutation matrix objects
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394
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395 return dense_cache;
445d27d79f4e support permutation matrix objects
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396 }
445d27d79f4e support permutation matrix objects
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diff changeset
397
445d27d79f4e support permutation matrix objects
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diff changeset
398 #define FORWARD_MAPPER(MAP) \
445d27d79f4e support permutation matrix objects
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diff changeset
399 octave_value \
445d27d79f4e support permutation matrix objects
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diff changeset
400 octave_perm_matrix::MAP (void) const \
445d27d79f4e support permutation matrix objects
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401 { \
445d27d79f4e support permutation matrix objects
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diff changeset
402 return to_dense ().MAP (); \
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
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
405 FORWARD_MAPPER (erf)
445d27d79f4e support permutation matrix objects
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parents:
diff changeset
406 FORWARD_MAPPER (erfc)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
407 FORWARD_MAPPER (gamma)
445d27d79f4e support permutation matrix objects
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parents:
diff changeset
408 FORWARD_MAPPER (lgamma)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
409 FORWARD_MAPPER (abs)
445d27d79f4e support permutation matrix objects
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parents:
diff changeset
410 FORWARD_MAPPER (acos)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
411 FORWARD_MAPPER (acosh)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
412 FORWARD_MAPPER (angle)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
413 FORWARD_MAPPER (arg)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
414 FORWARD_MAPPER (asin)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
415 FORWARD_MAPPER (asinh)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
416 FORWARD_MAPPER (atan)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
417 FORWARD_MAPPER (atanh)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
418 FORWARD_MAPPER (ceil)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
419 FORWARD_MAPPER (conj)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
420 FORWARD_MAPPER (cos)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
421 FORWARD_MAPPER (cosh)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
422 FORWARD_MAPPER (exp)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
423 FORWARD_MAPPER (expm1)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
424 FORWARD_MAPPER (fix)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
425 FORWARD_MAPPER (floor)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
426 FORWARD_MAPPER (imag)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
427 FORWARD_MAPPER (log)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
428 FORWARD_MAPPER (log2)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
429 FORWARD_MAPPER (log10)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
430 FORWARD_MAPPER (log1p)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
431 FORWARD_MAPPER (real)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
432 FORWARD_MAPPER (round)
445d27d79f4e support permutation matrix objects
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parents:
diff changeset
433 FORWARD_MAPPER (roundb)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
434 FORWARD_MAPPER (signum)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
435 FORWARD_MAPPER (sin)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
436 FORWARD_MAPPER (sinh)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
437 FORWARD_MAPPER (sqrt)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
438 FORWARD_MAPPER (tan)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
439 FORWARD_MAPPER (tanh)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
440 FORWARD_MAPPER (finite)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
441 FORWARD_MAPPER (isinf)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
442 FORWARD_MAPPER (isna)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
443 FORWARD_MAPPER (isnan)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
444
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
445 DEFINE_OCTAVE_ALLOCATOR (octave_perm_matrix);
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
446
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
447 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_perm_matrix,
445d27d79f4e support permutation matrix objects
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parents:
diff changeset
448 "permutation matrix", "double");
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
449
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
450 static octave_base_value *
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
451 default_numeric_conversion_function (const octave_base_value& a)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
452 {
445d27d79f4e support permutation matrix objects
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parents:
diff changeset
453 CAST_CONV_ARG (const octave_perm_matrix&);
445d27d79f4e support permutation matrix objects
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parents:
diff changeset
454
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
455 return new octave_matrix (v.matrix_value ());
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
456 }
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
457
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
458 octave_base_value::type_conv_info
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
459 octave_perm_matrix::numeric_conversion_function (void) const
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 octave_base_value::type_conv_info (default_numeric_conversion_function,
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
462 octave_matrix::static_type_id ());
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
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
465 static octave_base_value *
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
466 default_numeric_demotion_function (const octave_base_value& a)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
467 {
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
468 CAST_CONV_ARG (const octave_perm_matrix&);
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 return new octave_float_perm_matrix (v.perm_matrix_value ());
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
471 }
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
472
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
473 octave_base_value::type_conv_info
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
474 octave_perm_matrix::numeric_demotion_function (void) const
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 octave_base_value::type_conv_info (default_numeric_demotion_function,
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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477 octave_float_perm_matrix::static_type_id ());
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
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478 }
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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479
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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480 octave_base_value *
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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481 octave_perm_matrix::try_narrowing_conversion (void)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
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482 {
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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483 octave_base_value *retval = 0;
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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484
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
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485 if (matrix.nelem () == 1)
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
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486 retval = new octave_scalar (matrix (0, 0));
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
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487
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
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488 return retval;
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
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489 }
445d27d79f4e support permutation matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
490