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annotate src/ov-base-diag.cc @ 14138:72c96de7a403 stable

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maint: update copyright notices for 2012
author John W. Eaton <jwe@octave.org>
date Mon, 02 Jan 2012 14:25:41 -0500
parents 12df7854fa7c
children 29aabe9b37a2 6250e1232c9c
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1 /*
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2
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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 "ov-base.h"
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33 #include "ov-base-mat.h"
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34 #include "pr-output.h"
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35 #include "error.h"
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36 #include "gripes.h"
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37 #include "oct-stream.h"
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38 #include "ops.h"
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39
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40 #include "ls-oct-ascii.h"
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41
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42 template <class DMT, class MT>
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43 octave_value
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44 octave_base_diag<DMT, MT>::subsref (const std::string& type,
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45 const std::list<octave_value_list>& idx)
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46 {
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47 octave_value retval;
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48
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49 switch (type[0])
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50 {
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51 case '(':
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52 retval = do_index_op (idx.front ());
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53 break;
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54
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55 case '{':
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56 case '.':
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57 {
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58 std::string nm = type_name ();
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59 error ("%s cannot be indexed with %c", nm.c_str (), type[0]);
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60 }
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61 break;
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62
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63 default:
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64 panic_impossible ();
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65 }
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66
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67 return retval.next_subsref (type, idx);
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68 }
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69
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70 template <class DMT, class MT>
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71 octave_value
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72 octave_base_diag<DMT, MT>::do_index_op (const octave_value_list& idx,
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73 bool resize_ok)
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74 {
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75 octave_value retval;
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76 typedef typename DMT::element_type el_type;
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77
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78 if (idx.length () == 2 && ! resize_ok)
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79 {
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80 idx_vector idx0 = idx(0).index_vector ();
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81 idx_vector idx1 = idx(1).index_vector ();
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82
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83 if (idx0.is_scalar () && idx1.is_scalar ())
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84 {
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85 retval = matrix.checkelem (idx0(0), idx1(0));
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86 }
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87 else
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88 {
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89 octave_idx_type m = idx0.length (matrix.rows ());
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90 octave_idx_type n = idx1.length (matrix.columns ());
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91 if (idx0.is_colon_equiv (m) && idx1.is_colon_equiv (n)
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92 && m <= matrix.rows () && n <= matrix.rows ())
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93 {
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94 DMT rm (matrix);
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95 rm.resize (m, n);
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96 retval = rm;
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97 }
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98 else
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99 retval = to_dense ().do_index_op (idx, resize_ok);
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100 }
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101 }
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102 else
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103 retval = to_dense ().do_index_op (idx, resize_ok);
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104
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105 return retval;
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106 }
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107
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108 template <class DMT, class MT>
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109 octave_value
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110 octave_base_diag<DMT, MT>::subsasgn (const std::string& type,
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111 const std::list<octave_value_list>& idx,
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112 const octave_value& rhs)
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113 {
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114 octave_value retval;
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115
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116 switch (type[0])
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117 {
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118 case '(':
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119 {
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120 if (type.length () == 1)
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121 {
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122 octave_value_list jdx = idx.front ();
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123 // Check for a simple element assignment. That means, if D is a diagonal matrix,
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124 // `D(i,i) = x' will not destroy its diagonality (provided i is a valid index).
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125 if (jdx.length () == 2 && jdx(0).is_scalar_type () && jdx(1).is_scalar_type ())
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126 {
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127 typename DMT::element_type val;
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128 idx_vector i0 = jdx(0).index_vector (), i1 = jdx(1).index_vector ();
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129 if (! error_state && i0(0) == i1(0)
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130 && i0(0) < matrix.rows () && i1(0) < matrix.cols ()
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131 && chk_valid_scalar (rhs, val))
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132 {
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133 matrix.dgelem (i0(0)) = val;
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134 retval = this;
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135 this->count++;
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136 // invalidate cache
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137 dense_cache = octave_value ();
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138 }
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139 }
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140
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141 if (! error_state && ! retval.is_defined ())
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142 retval = numeric_assign (type, idx, rhs);
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143 }
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144 else
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145 {
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146 std::string nm = type_name ();
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147 error ("in indexed assignment of %s, last lhs index must be ()",
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148 nm.c_str ());
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149 }
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150 }
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151 break;
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152
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153 case '{':
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154 case '.':
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155 {
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156 if (is_empty ())
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157 {
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158 octave_value tmp = octave_value::empty_conv (type, rhs);
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159
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160 retval = tmp.subsasgn (type, idx, rhs);
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161 }
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162 else
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163 {
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164 std::string nm = type_name ();
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165 error ("%s cannot be indexed with %c", nm.c_str (), type[0]);
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166 }
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167 }
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168 break;
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169
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170 default:
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171 panic_impossible ();
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172 }
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173
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174 return retval;
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175 }
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176
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177 template <class DMT, class MT>
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178 octave_value
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179 octave_base_diag<DMT, MT>::resize (const dim_vector& dv, bool fill) const
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180 {
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181 octave_value retval;
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182 if (dv.length () == 2)
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183 {
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184 DMT rm (matrix);
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185 rm.resize (dv(0), dv(1));
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186 retval = rm;
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187 }
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188 else
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189 retval = to_dense ().resize (dv, fill);
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190 return retval;
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191 }
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192
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193 template <class DMT, class MT>
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194 bool
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195 octave_base_diag<DMT, MT>::is_true (void) const
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196 {
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197 return to_dense ().is_true ();
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198 }
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199
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200 // FIXME: this should be achieveable using ::real
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201 template <class T> inline T helper_getreal (T x) { return x; }
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202 template <class T> inline T helper_getreal (std::complex<T> x) { return x.real (); }
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203 // FIXME: we really need some traits so that ad hoc hooks like this are not necessary
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204 template <class T> inline T helper_iscomplex (T) { return false; }
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205 template <class T> inline T helper_iscomplex (std::complex<T>) { return true; }
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206
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207 template <class DMT, class MT>
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208 double
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209 octave_base_diag<DMT, MT>::double_value (bool force_conversion) const
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210 {
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211 double retval = lo_ieee_nan_value ();
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212 typedef typename DMT::element_type el_type;
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213
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214 if (helper_iscomplex (el_type ()) && ! force_conversion)
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215 gripe_implicit_conversion ("Octave:imag-to-real",
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216 "complex matrix", "real scalar");
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217
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218 if (numel () > 0)
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219 {
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220 gripe_implicit_conversion ("Octave:array-as-scalar",
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221 type_name (), "real scalar");
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222
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223 retval = helper_getreal (el_type (matrix (0, 0)));
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224 }
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225 else
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226 gripe_invalid_conversion (type_name (), "real scalar");
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227
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228 return retval;
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229 }
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230
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231 template <class DMT, class MT>
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232 float
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233 octave_base_diag<DMT, MT>::float_value (bool force_conversion) const
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234 {
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235 float retval = lo_ieee_float_nan_value ();
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236 typedef typename DMT::element_type el_type;
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237
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238 if (helper_iscomplex (el_type ()) && ! force_conversion)
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239 gripe_implicit_conversion ("Octave:imag-to-real",
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240 "complex matrix", "real scalar");
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241
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242 if (numel () > 0)
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243 {
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244 gripe_implicit_conversion ("Octave:array-as-scalar",
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245 type_name (), "real scalar");
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246
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247 retval = helper_getreal (el_type (matrix (0, 0)));
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248 }
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249 else
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250 gripe_invalid_conversion (type_name (), "real scalar");
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251
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252 return retval;
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253 }
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254
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255 template <class DMT, class MT>
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256 Complex
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257 octave_base_diag<DMT, MT>::complex_value (bool) const
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258 {
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259 double tmp = lo_ieee_nan_value ();
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260
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261 Complex retval (tmp, tmp);
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262
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263 if (rows () > 0 && columns () > 0)
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264 {
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265 gripe_implicit_conversion ("Octave:array-as-scalar",
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266 type_name (), "complex scalar");
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267
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268 retval = matrix (0, 0);
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269 }
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270 else
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271 gripe_invalid_conversion (type_name (), "complex scalar");
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272
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273 return retval;
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274 }
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275
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276 template <class DMT, class MT>
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277 FloatComplex
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278 octave_base_diag<DMT, MT>::float_complex_value (bool) const
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279 {
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280 float tmp = lo_ieee_float_nan_value ();
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281
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282 FloatComplex retval (tmp, tmp);
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283
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284 if (rows () > 0 && columns () > 0)
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285 {
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286 gripe_implicit_conversion ("Octave:array-as-scalar",
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287 type_name (), "complex scalar");
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288
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289 retval = matrix (0, 0);
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290 }
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291 else
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292 gripe_invalid_conversion (type_name (), "complex scalar");
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293
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294 return retval;
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295 }
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296
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297 template <class DMT, class MT>
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298 Matrix
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299 octave_base_diag<DMT, MT>::matrix_value (bool) const
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300 {
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301 return Matrix (diag_matrix_value ());
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302 }
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303
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304 template <class DMT, class MT>
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305 FloatMatrix
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306 octave_base_diag<DMT, MT>::float_matrix_value (bool) const
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307 {
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308 return FloatMatrix (float_diag_matrix_value ());
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309 }
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310
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311 template <class DMT, class MT>
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312 ComplexMatrix
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313 octave_base_diag<DMT, MT>::complex_matrix_value (bool) const
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314 {
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315 return ComplexMatrix (complex_diag_matrix_value ());
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316 }
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317
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318 template <class DMT, class MT>
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319 FloatComplexMatrix
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320 octave_base_diag<DMT, MT>::float_complex_matrix_value (bool) const
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321 {
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322 return FloatComplexMatrix (float_complex_diag_matrix_value ());
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323 }
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324
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325 template <class DMT, class MT>
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326 NDArray
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327 octave_base_diag<DMT, MT>::array_value (bool) const
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328 {
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329 return NDArray (matrix_value ());
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330 }
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331
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332 template <class DMT, class MT>
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333 FloatNDArray
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334 octave_base_diag<DMT, MT>::float_array_value (bool) const
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335 {
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336 return FloatNDArray (float_matrix_value ());
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337 }
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338
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339 template <class DMT, class MT>
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340 ComplexNDArray
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341 octave_base_diag<DMT, MT>::complex_array_value (bool) const
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342 {
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343 return ComplexNDArray (complex_matrix_value ());
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344 }
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345
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346 template <class DMT, class MT>
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347 FloatComplexNDArray
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348 octave_base_diag<DMT, MT>::float_complex_array_value (bool) const
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349 {
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350 return FloatComplexNDArray (float_complex_matrix_value ());
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351 }
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352
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353 template <class DMT, class MT>
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354 boolNDArray
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355 octave_base_diag<DMT, MT>::bool_array_value (bool warn) const
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356 {
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357 return to_dense ().bool_array_value (warn);
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358 }
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359
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360 template <class DMT, class MT>
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361 charNDArray
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362 octave_base_diag<DMT, MT>::char_array_value (bool warn) const
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363 {
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364 return to_dense ().char_array_value (warn);
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365 }
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366
8366
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367 template <class DMT, class MT>
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368 SparseMatrix
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369 octave_base_diag<DMT, MT>::sparse_matrix_value (bool) const
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370 {
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371 return SparseMatrix (diag_matrix_value ());
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372 }
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373
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374 template <class DMT, class MT>
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375 SparseComplexMatrix
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376 octave_base_diag<DMT, MT>::sparse_complex_matrix_value (bool) const
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377 {
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378 return SparseComplexMatrix (complex_diag_matrix_value ());
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379 }
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380
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381 template <class DMT, class MT>
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382 idx_vector
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383 octave_base_diag<DMT, MT>::index_vector (void) const
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384 {
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385 return to_dense ().index_vector ();
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386 }
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387
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diff changeset
388 template <class DMT, class MT>
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389 octave_value
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390 octave_base_diag<DMT, MT>::convert_to_str_internal (bool pad, bool force, char type) const
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391 {
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392 return to_dense ().convert_to_str_internal (pad, force, type);
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393 }
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parents:
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394
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diff changeset
395 template <class DMT, class MT>
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396 bool
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397 octave_base_diag<DMT, MT>::save_ascii (std::ostream& os)
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diff changeset
398 {
8376
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399 os << "# rows: " << matrix.rows () << "\n"
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400 << "# columns: " << matrix.columns () << "\n";
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diff changeset
401
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diff changeset
402 os << matrix.diag ();
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diff changeset
403
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
404 return true;
8366
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405 }
8b1a2555c4e2 implement diagonal matrix objects
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parents:
diff changeset
406
8b1a2555c4e2 implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
407 template <class DMT, class MT>
11586
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diff changeset
408 bool
8376
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diff changeset
409 octave_base_diag<DMT, MT>::load_ascii (std::istream& is)
8366
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parents:
diff changeset
410 {
8376
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diff changeset
411 octave_idx_type r = 0, c = 0;
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
412 bool success = true;
8366
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diff changeset
413
8376
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
414 if (extract_keyword (is, "rows", r, true)
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
415 && extract_keyword (is, "columns", c, true))
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
416 {
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
417 octave_idx_type l = r < c ? r : c;
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
418 MT tmp (l, 1);
c43481a19bfe implement ASCII saving of diag & perm matrices
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419 is >> tmp;
8366
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diff changeset
420
11586
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diff changeset
421 if (!is)
10315
57a59eae83cc untabify src C++ source files
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parents: 9812
diff changeset
422 {
57a59eae83cc untabify src C++ source files
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diff changeset
423 error ("load: failed to load diagonal matrix constant");
57a59eae83cc untabify src C++ source files
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diff changeset
424 success = false;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
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diff changeset
425 }
8376
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diff changeset
426 else
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
427 {
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
428 // This is a little tricky, as we have the Matrix type, but
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
429 // not ColumnVector type. We need to help the compiler get
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
430 // through the inheritance tree.
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diff changeset
431 typedef typename DMT::element_type el_type;
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diff changeset
432 matrix = DMT (MDiagArray2<el_type> (MArray<el_type> (tmp)));
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diff changeset
433 matrix.resize (r, c);
c43481a19bfe implement ASCII saving of diag & perm matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
434
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
435 // Invalidate cache. Probably not necessary, but safe.
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
436 dense_cache = octave_value ();
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
437 }
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
438 }
c43481a19bfe implement ASCII saving of diag & perm matrices
Jaroslav Hajek <highegg@gmail.com>
parents: 8367
diff changeset
439 else
c43481a19bfe implement ASCII saving of diag & perm matrices
Jaroslav Hajek <highegg@gmail.com>
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diff changeset
440 {
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
441 error ("load: failed to extract number of rows and columns");
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
442 success = false;
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diff changeset
443 }
c43481a19bfe implement ASCII saving of diag & perm matrices
Jaroslav Hajek <highegg@gmail.com>
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diff changeset
444
c43481a19bfe implement ASCII saving of diag & perm matrices
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diff changeset
445 return success;
8366
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446 }
8b1a2555c4e2 implement diagonal matrix objects
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parents:
diff changeset
447
8b1a2555c4e2 implement diagonal matrix objects
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diff changeset
448 template <class DMT, class MT>
8b1a2555c4e2 implement diagonal matrix objects
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parents:
diff changeset
449 void
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diff changeset
450 octave_base_diag<DMT, MT>::print_raw (std::ostream& os,
8376
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diff changeset
451 bool pr_as_read_syntax) const
8366
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diff changeset
452 {
8625
4d90d21a9cd9 special printing of diagonal matrices
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diff changeset
453 return octave_print_internal (os, matrix, pr_as_read_syntax,
4d90d21a9cd9 special printing of diagonal matrices
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parents: 8459
diff changeset
454 current_print_indent_level ());
8366
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diff changeset
455 }
8b1a2555c4e2 implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
456
8b1a2555c4e2 implement diagonal matrix objects
Jaroslav Hajek <highegg@gmail.com>
parents:
diff changeset
457 template <class DMT, class MT>
8b1a2555c4e2 implement diagonal matrix objects
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diff changeset
458 mxArray *
8b1a2555c4e2 implement diagonal matrix objects
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parents:
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459 octave_base_diag<DMT, MT>::as_mxArray (void) const
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460 {
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461 return to_dense ().as_mxArray ();
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462 }
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463
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464 template <class DMT, class MT>
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465 bool
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466 octave_base_diag<DMT, MT>::print_as_scalar (void) const
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467 {
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468 dim_vector dv = dims ();
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469
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470 return (dv.all_ones () || dv.any_zero ());
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471 }
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472
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473 template <class DMT, class MT>
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474 void
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475 octave_base_diag<DMT, MT>::print (std::ostream& os, bool pr_as_read_syntax) const
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476 {
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477 print_raw (os, pr_as_read_syntax);
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478 newline (os);
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479 }
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480 template <class DMT, class MT>
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481 int
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482 octave_base_diag<DMT, MT>::write (octave_stream& os, int block_size,
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483 oct_data_conv::data_type output_type, int skip,
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484 oct_mach_info::float_format flt_fmt) const
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485 {
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486 return to_dense ().write (os, block_size, output_type, skip, flt_fmt);
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487 }
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488
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489 template <class DMT, class MT>
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490 void
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491 octave_base_diag<DMT, MT>::print_info (std::ostream& os,
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492 const std::string& prefix) const
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493 {
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494 matrix.print_info (os, prefix);
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495 }
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496
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497 template <class DMT, class MT>
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498 octave_value
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499 octave_base_diag<DMT, MT>::to_dense (void) const
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500 {
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501 if (! dense_cache.is_defined ())
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502 dense_cache = MT (matrix);
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503
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504 return dense_cache;
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505 }
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506