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annotate libinterp/octave-value/ov-base-diag.cc @ 17402:b6867a09d7cf

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Return correct status code for copyfile, movefile. * scripts/miscellaneous/copyfile.m, scripts/miscellaneous/movefile.m: Return correct status (inversion of system function). Put input validation first. Use single quotes to simplify expressions. Redo docstrings.
author Rik <rik@octave.org>
date Sun, 08 Sep 2013 21:11:45 -0700
parents 1c8234f0b642
children
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1 /*
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2
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72c96de7a403 maint: update copyright notices for 2012
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3 Copyright (C) 2008-2012 Jaroslav Hajek
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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 <iostream>
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28
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29 #include "mach-info.h"
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30 #include "lo-ieee.h"
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31
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32 #include "mxarray.h"
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33 #include "ov-base.h"
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34 #include "ov-base-mat.h"
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35 #include "pr-output.h"
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36 #include "error.h"
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37 #include "gripes.h"
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38 #include "oct-stream.h"
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39 #include "ops.h"
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40
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41 #include "ls-oct-ascii.h"
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42
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43 template <class DMT, class MT>
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44 octave_value
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45 octave_base_diag<DMT, MT>::subsref (const std::string& type,
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46 const std::list<octave_value_list>& idx)
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47 {
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48 octave_value retval;
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49
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50 switch (type[0])
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51 {
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52 case '(':
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53 retval = do_index_op (idx.front ());
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54 break;
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55
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56 case '{':
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57 case '.':
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58 {
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59 std::string nm = type_name ();
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60 error ("%s cannot be indexed with %c", nm.c_str (), type[0]);
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61 }
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62 break;
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63
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64 default:
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65 panic_impossible ();
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66 }
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67
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68 return retval.next_subsref (type, idx);
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69 }
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70
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71
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72 template <class DMT, class MT>
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73 octave_value
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74 octave_base_diag<DMT,MT>::diag (octave_idx_type k) const
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75 {
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76 octave_value retval;
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77 if (matrix.rows () == 1 || matrix.cols () == 1)
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78 {
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79 // Rather odd special case. This is a row or column vector
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80 // represented as a diagonal matrix with a single nonzero entry, but
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81 // Fdiag semantics are to product a diagonal matrix for vector
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82 // inputs.
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83 if (k == 0)
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84 // Returns Diag2Array<T> with nnz <= 1.
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85 retval = matrix.build_diag_matrix ();
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86 else
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87 // Returns Array<T> matrix
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88 retval = matrix.array_value ().diag (k);
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89 }
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90 else
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91 // Returns Array<T> vector
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92 retval = matrix.extract_diag (k);
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93 return retval;
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94 }
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95
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96
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97 template <class DMT, class MT>
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98 octave_value
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99 octave_base_diag<DMT, MT>::do_index_op (const octave_value_list& idx,
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100 bool resize_ok)
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101 {
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102 octave_value retval;
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103 typedef typename DMT::element_type el_type;
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104
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105 if (idx.length () == 2 && ! resize_ok)
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106 {
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107 idx_vector idx0 = idx(0).index_vector ();
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108 idx_vector idx1 = idx(1).index_vector ();
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109
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110 if (idx0.is_scalar () && idx1.is_scalar ())
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111 {
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112 retval = matrix.checkelem (idx0(0), idx1(0));
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113 }
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114 else
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115 {
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116 octave_idx_type m = idx0.length (matrix.rows ());
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117 octave_idx_type n = idx1.length (matrix.columns ());
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118 if (idx0.is_colon_equiv (m) && idx1.is_colon_equiv (n)
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119 && m <= matrix.rows () && n <= matrix.rows ())
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120 {
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121 DMT rm (matrix);
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122 rm.resize (m, n);
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123 retval = rm;
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124 }
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125 else
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126 retval = to_dense ().do_index_op (idx, resize_ok);
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127 }
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128 }
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129 else
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130 retval = to_dense ().do_index_op (idx, resize_ok);
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131
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132 return retval;
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133 }
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134
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135 template <class DMT, class MT>
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136 octave_value
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137 octave_base_diag<DMT, MT>::subsasgn (const std::string& type,
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138 const std::list<octave_value_list>& idx,
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139 const octave_value& rhs)
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140 {
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141 octave_value retval;
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142
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143 switch (type[0])
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144 {
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145 case '(':
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146 {
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147 if (type.length () == 1)
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148 {
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149 octave_value_list jdx = idx.front ();
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150 // Check for a simple element assignment. That means, if D is a diagonal matrix,
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151 // 'D(i,i) = x' will not destroy its diagonality (provided i is a valid index).
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152 if (jdx.length () == 2 && jdx(0).is_scalar_type () && jdx(1).is_scalar_type ())
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153 {
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154 typename DMT::element_type val;
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155 idx_vector i0 = jdx(0).index_vector (), i1 = jdx(1).index_vector ();
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156 if (! error_state && i0(0) == i1(0)
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157 && i0(0) < matrix.rows () && i1(0) < matrix.cols ()
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158 && chk_valid_scalar (rhs, val))
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159 {
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160 matrix.dgelem (i0(0)) = val;
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161 retval = this;
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162 this->count++;
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163 // invalidate cache
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164 dense_cache = octave_value ();
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165 }
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166 }
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167
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168 if (! error_state && ! retval.is_defined ())
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169 retval = numeric_assign (type, idx, rhs);
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170 }
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171 else
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172 {
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173 std::string nm = type_name ();
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174 error ("in indexed assignment of %s, last lhs index must be ()",
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175 nm.c_str ());
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176 }
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177 }
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178 break;
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179
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180 case '{':
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181 case '.':
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182 {
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183 if (is_empty ())
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184 {
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185 octave_value tmp = octave_value::empty_conv (type, rhs);
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186
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187 retval = tmp.subsasgn (type, idx, rhs);
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188 }
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189 else
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190 {
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191 std::string nm = type_name ();
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192 error ("%s cannot be indexed with %c", nm.c_str (), type[0]);
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193 }
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194 }
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195 break;
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196
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197 default:
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198 panic_impossible ();
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199 }
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200
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201 return retval;
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202 }
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203
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204 template <class DMT, class MT>
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205 octave_value
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206 octave_base_diag<DMT, MT>::resize (const dim_vector& dv, bool fill) const
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207 {
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208 octave_value retval;
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209 if (dv.length () == 2)
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210 {
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211 DMT rm (matrix);
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212 rm.resize (dv(0), dv(1));
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213 retval = rm;
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214 }
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215 else
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216 retval = to_dense ().resize (dv, fill);
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217 return retval;
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218 }
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219
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220 template <class DMT, class MT>
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221 bool
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222 octave_base_diag<DMT, MT>::is_true (void) const
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223 {
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224 return to_dense ().is_true ();
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225 }
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226
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227 // FIXME: this should be achieveable using ::real
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228 template <class T> inline T helper_getreal (T x) { return x; }
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229 template <class T> inline T helper_getreal (std::complex<T> x) { return x.real (); }
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230 // FIXME: we really need some traits so that ad hoc hooks like this are not necessary
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231 template <class T> inline T helper_iscomplex (T) { return false; }
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232 template <class T> inline T helper_iscomplex (std::complex<T>) { return true; }
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233
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234 template <class DMT, class MT>
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235 double
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236 octave_base_diag<DMT, MT>::double_value (bool force_conversion) const
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237 {
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238 double retval = lo_ieee_nan_value ();
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239 typedef typename DMT::element_type el_type;
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240
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241 if (helper_iscomplex (el_type ()) && ! force_conversion)
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242 gripe_implicit_conversion ("Octave:imag-to-real",
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243 "complex matrix", "real scalar");
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244
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245 if (numel () > 0)
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246 {
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247 gripe_implicit_conversion ("Octave:array-to-scalar",
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248 type_name (), "real scalar");
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249
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250 retval = helper_getreal (el_type (matrix (0, 0)));
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251 }
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252 else
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253 gripe_invalid_conversion (type_name (), "real scalar");
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254
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255 return retval;
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256 }
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257
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258 template <class DMT, class MT>
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259 float
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260 octave_base_diag<DMT, MT>::float_value (bool force_conversion) const
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261 {
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262 float retval = lo_ieee_float_nan_value ();
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263 typedef typename DMT::element_type el_type;
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264
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265 if (helper_iscomplex (el_type ()) && ! force_conversion)
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266 gripe_implicit_conversion ("Octave:imag-to-real",
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267 "complex matrix", "real scalar");
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268
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269 if (numel () > 0)
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diff changeset
270 {
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diff changeset
271 gripe_implicit_conversion ("Octave:array-to-scalar",
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272 type_name (), "real scalar");
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273
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274 retval = helper_getreal (el_type (matrix (0, 0)));
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275 }
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276 else
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277 gripe_invalid_conversion (type_name (), "real scalar");
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278
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279 return retval;
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280 }
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281
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diff changeset
282 template <class DMT, class MT>
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diff changeset
283 Complex
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284 octave_base_diag<DMT, MT>::complex_value (bool) const
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285 {
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diff changeset
286 double tmp = lo_ieee_nan_value ();
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287
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diff changeset
288 Complex retval (tmp, tmp);
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289
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diff changeset
290 if (rows () > 0 && columns () > 0)
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diff changeset
291 {
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diff changeset
292 gripe_implicit_conversion ("Octave:array-to-scalar",
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diff changeset
293 type_name (), "complex scalar");
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294
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295 retval = matrix (0, 0);
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296 }
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297 else
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298 gripe_invalid_conversion (type_name (), "complex scalar");
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299
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300 return retval;
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301 }
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302
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303 template <class DMT, class MT>
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304 FloatComplex
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305 octave_base_diag<DMT, MT>::float_complex_value (bool) const
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306 {
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307 float tmp = lo_ieee_float_nan_value ();
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308
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309 FloatComplex retval (tmp, tmp);
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310
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311 if (rows () > 0 && columns () > 0)
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312 {
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313 gripe_implicit_conversion ("Octave:array-to-scalar",
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314 type_name (), "complex scalar");
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315
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316 retval = matrix (0, 0);
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317 }
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318 else
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319 gripe_invalid_conversion (type_name (), "complex scalar");
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320
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321 return retval;
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322 }
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323
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324 template <class DMT, class MT>
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325 Matrix
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326 octave_base_diag<DMT, MT>::matrix_value (bool) const
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327 {
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328 return Matrix (diag_matrix_value ());
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329 }
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330
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331 template <class DMT, class MT>
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332 FloatMatrix
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333 octave_base_diag<DMT, MT>::float_matrix_value (bool) const
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334 {
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335 return FloatMatrix (float_diag_matrix_value ());
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336 }
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337
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338 template <class DMT, class MT>
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339 ComplexMatrix
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340 octave_base_diag<DMT, MT>::complex_matrix_value (bool) const
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341 {
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342 return ComplexMatrix (complex_diag_matrix_value ());
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343 }
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344
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345 template <class DMT, class MT>
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346 FloatComplexMatrix
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347 octave_base_diag<DMT, MT>::float_complex_matrix_value (bool) const
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348 {
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349 return FloatComplexMatrix (float_complex_diag_matrix_value ());
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350 }
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351
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352 template <class DMT, class MT>
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353 NDArray
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354 octave_base_diag<DMT, MT>::array_value (bool) const
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355 {
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356 return NDArray (matrix_value ());
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357 }
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358
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359 template <class DMT, class MT>
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360 FloatNDArray
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361 octave_base_diag<DMT, MT>::float_array_value (bool) const
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362 {
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363 return FloatNDArray (float_matrix_value ());
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364 }
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365
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366 template <class DMT, class MT>
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367 ComplexNDArray
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368 octave_base_diag<DMT, MT>::complex_array_value (bool) const
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369 {
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370 return ComplexNDArray (complex_matrix_value ());
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371 }
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372
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373 template <class DMT, class MT>
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374 FloatComplexNDArray
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375 octave_base_diag<DMT, MT>::float_complex_array_value (bool) const
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376 {
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377 return FloatComplexNDArray (float_complex_matrix_value ());
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378 }
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379
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380 template <class DMT, class MT>
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381 boolNDArray
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382 octave_base_diag<DMT, MT>::bool_array_value (bool warn) const
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383 {
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384 return to_dense ().bool_array_value (warn);
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385 }
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386
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387 template <class DMT, class MT>
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388 charNDArray
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389 octave_base_diag<DMT, MT>::char_array_value (bool warn) const
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390 {
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391 return to_dense ().char_array_value (warn);
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392 }
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diff changeset
393
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394 template <class DMT, class MT>
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395 SparseMatrix
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396 octave_base_diag<DMT, MT>::sparse_matrix_value (bool) const
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diff changeset
397 {
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398 return SparseMatrix (diag_matrix_value ());
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399 }
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400
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diff changeset
401 template <class DMT, class MT>
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402 SparseComplexMatrix
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403 octave_base_diag<DMT, MT>::sparse_complex_matrix_value (bool) const
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diff changeset
404 {
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405 return SparseComplexMatrix (complex_diag_matrix_value ());
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diff changeset
406 }
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diff changeset
407
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diff changeset
408 template <class DMT, class MT>
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409 idx_vector
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diff changeset
410 octave_base_diag<DMT, MT>::index_vector (void) const
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diff changeset
411 {
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412 return to_dense ().index_vector ();
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diff changeset
413 }
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parents:
diff changeset
414
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parents:
diff changeset
415 template <class DMT, class MT>
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diff changeset
416 octave_value
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diff changeset
417 octave_base_diag<DMT, MT>::convert_to_str_internal (bool pad, bool force, char type) const
8b1a2555c4e2 implement diagonal matrix objects
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diff changeset
418 {
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419 return to_dense ().convert_to_str_internal (pad, force, type);
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diff changeset
420 }
8b1a2555c4e2 implement diagonal matrix objects
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parents:
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421
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diff changeset
422 template <class DMT, class MT>
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diff changeset
423 bool
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424 octave_base_diag<DMT, MT>::save_ascii (std::ostream& os)
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diff changeset
425 {
8376
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426 os << "# rows: " << matrix.rows () << "\n"
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diff changeset
427 << "# columns: " << matrix.columns () << "\n";
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
428
15448
0a0912a9ab6e Replace deprecated DiagArray2<T>::diag calls with DiagArray2<T>::extract_diag
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents: 15429
diff changeset
429 os << matrix.extract_diag ();
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diff changeset
430
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
431 return true;
8366
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432 }
8b1a2555c4e2 implement diagonal matrix objects
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433
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diff changeset
434 template <class DMT, class MT>
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diff changeset
435 bool
8376
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diff changeset
436 octave_base_diag<DMT, MT>::load_ascii (std::istream& is)
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diff changeset
437 {
8376
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diff changeset
438 octave_idx_type r = 0, c = 0;
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
439 bool success = true;
8366
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diff changeset
440
8376
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diff changeset
441 if (extract_keyword (is, "rows", r, true)
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
442 && extract_keyword (is, "columns", c, true))
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
443 {
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
444 octave_idx_type l = r < c ? r : c;
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
445 MT tmp (l, 1);
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
446 is >> tmp;
8366
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diff changeset
447
11586
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diff changeset
448 if (!is)
10315
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diff changeset
449 {
57a59eae83cc untabify src C++ source files
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diff changeset
450 error ("load: failed to load diagonal matrix constant");
57a59eae83cc untabify src C++ source files
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451 success = false;
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452 }
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453 else
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454 {
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455 // This is a little tricky, as we have the Matrix type, but
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456 // not ColumnVector type. We need to help the compiler get
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457 // through the inheritance tree.
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458 typedef typename DMT::element_type el_type;
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459 matrix = DMT (MDiagArray2<el_type> (MArray<el_type> (tmp)));
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460 matrix.resize (r, c);
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461
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462 // Invalidate cache. Probably not necessary, but safe.
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463 dense_cache = octave_value ();
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464 }
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465 }
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466 else
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467 {
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468 error ("load: failed to extract number of rows and columns");
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469 success = false;
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470 }
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471
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472 return success;
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473 }
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474
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475 template <class DMT, class MT>
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476 void
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477 octave_base_diag<DMT, MT>::print_raw (std::ostream& os,
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478 bool pr_as_read_syntax) const
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479 {
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480 return octave_print_internal (os, matrix, pr_as_read_syntax,
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481 current_print_indent_level ());
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482 }
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483
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484 template <class DMT, class MT>
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485 mxArray *
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486 octave_base_diag<DMT, MT>::as_mxArray (void) const
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487 {
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488 return to_dense ().as_mxArray ();
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489 }
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490
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491 template <class DMT, class MT>
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492 bool
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493 octave_base_diag<DMT, MT>::print_as_scalar (void) const
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494 {
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495 dim_vector dv = dims ();
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496
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497 return (dv.all_ones () || dv.any_zero ());
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498 }
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499
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500 template <class DMT, class MT>
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501 void
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502 octave_base_diag<DMT, MT>::print (std::ostream& os, bool pr_as_read_syntax) const
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503 {
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504 print_raw (os, pr_as_read_syntax);
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505 newline (os);
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506 }
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507 template <class DMT, class MT>
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508 int
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509 octave_base_diag<DMT, MT>::write (octave_stream& os, int block_size,
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510 oct_data_conv::data_type output_type, int skip,
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511 oct_mach_info::float_format flt_fmt) const
11586
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512 {
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513 return to_dense ().write (os, block_size, output_type, skip, flt_fmt);
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514 }
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515
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516 template <class DMT, class MT>
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517 void
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518 octave_base_diag<DMT, MT>::print_info (std::ostream& os,
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519 const std::string& prefix) const
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520 {
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521 matrix.print_info (os, prefix);
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522 }
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523
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524 template <class DMT, class MT>
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525 octave_value
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526 octave_base_diag<DMT, MT>::to_dense (void) const
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527 {
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528 if (! dense_cache.is_defined ())
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529 dense_cache = MT (matrix);
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530
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531 return dense_cache;
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532 }
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533