Mercurial > octave
annotate src/ov-base-diag.cc @ 8367:445d27d79f4e
support permutation matrix objects
author | Jaroslav Hajek <highegg@gmail.com> |
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date | Thu, 04 Dec 2008 08:31:56 +0100 |
parents | 8b1a2555c4e2 |
children | c43481a19bfe |
rev | line source |
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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 <iostream> |
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28 |
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29 #include "mach-info.h" |
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30 |
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31 #include "ov-base.h" |
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32 #include "ov-base-mat.h" |
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33 #include "pr-output.h" |
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34 #include "error.h" |
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35 #include "gripes.h" |
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36 #include "oct-stream.h" |
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37 #include "ops.h" |
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38 |
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39 template <class DMT, class MT> |
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40 octave_value |
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41 octave_base_diag<DMT, MT>::subsref (const std::string& type, |
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42 const std::list<octave_value_list>& idx) |
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43 { |
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44 octave_value retval; |
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45 |
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46 switch (type[0]) |
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47 { |
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48 case '(': |
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49 retval = do_index_op (idx.front ()); |
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50 break; |
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51 |
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52 case '{': |
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53 case '.': |
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54 { |
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55 std::string nm = type_name (); |
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56 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); |
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57 } |
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58 break; |
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59 |
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60 default: |
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61 panic_impossible (); |
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62 } |
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63 |
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64 return retval.next_subsref (type, idx); |
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65 } |
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66 |
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67 template <class DMT, class MT> |
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68 octave_value |
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69 octave_base_diag<DMT, MT>::do_index_op (const octave_value_list& idx, |
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70 bool resize_ok) |
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71 { |
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72 octave_value retval; |
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73 typedef typename DMT::element_type el_type; |
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74 el_type one = 1; |
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75 |
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76 octave_idx_type nidx = idx.length (); |
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77 idx_vector idx0, idx1; |
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78 if (nidx == 2) |
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79 { |
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80 idx0 = idx(0).index_vector (); |
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81 idx1 = idx(1).index_vector (); |
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82 } |
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83 |
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84 // This hack is to allow constructing permutation matrices using |
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85 // eye(n)(p,:), eye(n)(:,q) && eye(n)(p,q) where p & q are permutation |
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86 // vectors. |
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87 // Note that, for better consistency, eye(n)(:,:) still converts to a full |
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88 // matrix. |
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89 // FIXME: This check is probably unnecessary for complex matrices. |
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90 if (! error_state && nidx == 2 && matrix.is_multiple_of_identity (one)) |
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91 { |
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92 |
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93 bool left = idx0.is_permutation (matrix.rows ()); |
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94 bool right = idx1.is_permutation (matrix.cols ()); |
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95 |
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96 if (left && right) |
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97 { |
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98 if (idx0.is_colon ()) left = false; |
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99 if (idx1.is_colon ()) right = false; |
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100 if (left && right) |
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101 retval = octave_value (PermMatrix (idx0, false) * PermMatrix (idx1, true), |
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102 is_single_type ()); |
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103 else if (left) |
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104 retval = octave_value (PermMatrix (idx0, false), |
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105 is_single_type ()); |
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106 else if (right) |
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107 retval = octave_value (PermMatrix (idx1, true), |
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108 is_single_type ()); |
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109 } |
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110 } |
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111 |
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112 // if error_state is set, we've already griped. |
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113 if (! error_state && ! retval.is_defined ()) |
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114 { |
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115 if (nidx == 2 && ! resize_ok && |
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116 idx0.is_scalar () && idx1.is_scalar ()) |
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117 { |
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118 // FIXME: the proxy mechanism of DiagArray2 causes problems here. |
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119 retval = el_type (matrix.checkelem (idx0(0), idx1(0))); |
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120 } |
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121 else |
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122 retval = to_dense ().do_index_op (idx, resize_ok); |
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123 } |
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124 |
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125 return retval; |
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126 } |
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127 |
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128 template <class DMT, class MT> |
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129 octave_value |
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130 octave_base_diag<DMT, MT>::resize (const dim_vector& dv, bool fill) const |
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131 { |
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132 octave_value retval; |
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133 if (dv.length () == 2) |
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134 { |
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135 DMT rm (matrix); |
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136 rm.resize (dv(0), dv(1)); |
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137 retval = rm; |
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138 } |
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139 else |
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140 retval = to_dense ().resize (dv, fill); |
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141 return retval; |
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142 } |
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143 |
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144 template <class DMT, class MT> |
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145 bool |
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146 octave_base_diag<DMT, MT>::is_true (void) const |
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147 { |
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148 return to_dense ().is_true (); |
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149 } |
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150 |
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151 template <class DMT, class MT> |
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152 bool |
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153 octave_base_diag<DMT, MT>::valid_as_scalar_index (void) const |
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154 { |
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155 // FIXME |
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156 return false; |
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157 } |
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158 |
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159 // FIXME: this should be achieveable using ::real |
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160 template <class T> inline T helper_getreal (T x) { return x; } |
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161 template <class T> inline T helper_getreal (std::complex<T> x) { return x.real (); } |
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162 // FIXME: we really need some traits so that ad hoc hooks like this are not necessary |
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163 template <class T> inline T helper_iscomplex (T) { return false; } |
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164 template <class T> inline T helper_iscomplex (std::complex<T>) { return true; } |
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165 |
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166 template <class DMT, class MT> |
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167 double |
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168 octave_base_diag<DMT, MT>::double_value (bool force_conversion) const |
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169 { |
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170 double retval = lo_ieee_nan_value (); |
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171 typedef typename DMT::element_type el_type; |
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172 |
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173 if (helper_iscomplex (el_type ()) && ! force_conversion) |
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174 gripe_implicit_conversion ("Octave:imag-to-real", |
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175 "complex matrix", "real scalar"); |
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176 |
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177 if (numel () > 0) |
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178 { |
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179 gripe_implicit_conversion ("Octave:array-as-scalar", |
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180 type_name (), "real scalar"); |
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181 |
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182 retval = helper_getreal (el_type (matrix (0, 0))); |
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183 } |
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184 else |
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185 gripe_invalid_conversion (type_name (), "real scalar"); |
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186 |
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187 return retval; |
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188 } |
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189 |
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190 template <class DMT, class MT> |
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191 float |
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192 octave_base_diag<DMT, MT>::float_value (bool force_conversion) const |
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193 { |
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194 float retval = lo_ieee_float_nan_value (); |
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195 typedef typename DMT::element_type el_type; |
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196 |
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197 if (helper_iscomplex (el_type ()) && ! force_conversion) |
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198 gripe_implicit_conversion ("Octave:imag-to-real", |
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199 "complex matrix", "real scalar"); |
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200 |
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201 if (numel () > 0) |
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202 { |
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203 gripe_implicit_conversion ("Octave:array-as-scalar", |
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204 type_name (), "real scalar"); |
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205 |
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206 retval = helper_getreal (el_type (matrix (0, 0))); |
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207 } |
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208 else |
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209 gripe_invalid_conversion (type_name (), "real scalar"); |
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210 |
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211 return retval; |
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212 } |
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213 |
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214 template <class DMT, class MT> |
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215 Complex |
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216 octave_base_diag<DMT, MT>::complex_value (bool) const |
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217 { |
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218 double tmp = lo_ieee_nan_value (); |
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219 |
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220 Complex retval (tmp, tmp); |
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221 |
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222 if (rows () > 0 && columns () > 0) |
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223 { |
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224 gripe_implicit_conversion ("Octave:array-as-scalar", |
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225 type_name (), "complex scalar"); |
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226 |
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227 retval = matrix (0, 0); |
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228 } |
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229 else |
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230 gripe_invalid_conversion (type_name (), "complex scalar"); |
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231 |
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232 return retval; |
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233 } |
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234 |
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235 template <class DMT, class MT> |
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236 FloatComplex |
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237 octave_base_diag<DMT, MT>::float_complex_value (bool) const |
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238 { |
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239 float tmp = lo_ieee_float_nan_value (); |
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240 |
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241 FloatComplex retval (tmp, tmp); |
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242 |
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243 if (rows () > 0 && columns () > 0) |
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244 { |
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245 gripe_implicit_conversion ("Octave:array-as-scalar", |
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246 type_name (), "complex scalar"); |
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247 |
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248 retval = matrix (0, 0); |
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249 } |
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250 else |
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251 gripe_invalid_conversion (type_name (), "complex scalar"); |
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252 |
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253 return retval; |
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254 } |
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255 |
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256 template <class DMT, class MT> |
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257 Matrix |
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258 octave_base_diag<DMT, MT>::matrix_value (bool) const |
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259 { |
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260 return Matrix (diag_matrix_value ()); |
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261 } |
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262 |
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263 template <class DMT, class MT> |
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264 FloatMatrix |
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265 octave_base_diag<DMT, MT>::float_matrix_value (bool) const |
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266 { |
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267 return FloatMatrix (float_diag_matrix_value ()); |
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268 } |
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269 |
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270 template <class DMT, class MT> |
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271 ComplexMatrix |
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272 octave_base_diag<DMT, MT>::complex_matrix_value (bool) const |
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273 { |
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274 return ComplexMatrix (complex_diag_matrix_value ()); |
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275 } |
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276 |
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277 template <class DMT, class MT> |
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278 FloatComplexMatrix |
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279 octave_base_diag<DMT, MT>::float_complex_matrix_value (bool) const |
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280 { |
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281 return FloatComplexMatrix (float_complex_diag_matrix_value ()); |
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282 } |
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283 |
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284 template <class DMT, class MT> |
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285 NDArray |
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286 octave_base_diag<DMT, MT>::array_value (bool) const |
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287 { |
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288 return NDArray (matrix_value ()); |
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289 } |
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290 |
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291 template <class DMT, class MT> |
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292 FloatNDArray |
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293 octave_base_diag<DMT, MT>::float_array_value (bool) const |
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294 { |
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295 return FloatNDArray (float_matrix_value ()); |
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296 } |
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297 |
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298 template <class DMT, class MT> |
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299 ComplexNDArray |
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300 octave_base_diag<DMT, MT>::complex_array_value (bool) const |
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301 { |
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302 return ComplexNDArray (complex_matrix_value ()); |
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303 } |
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304 |
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305 template <class DMT, class MT> |
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306 FloatComplexNDArray |
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307 octave_base_diag<DMT, MT>::float_complex_array_value (bool) const |
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308 { |
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309 return FloatComplexNDArray (float_complex_matrix_value ()); |
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310 } |
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311 |
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312 template <class DMT, class MT> |
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313 boolNDArray |
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314 octave_base_diag<DMT, MT>::bool_array_value (bool warn) const |
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315 { |
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316 return to_dense ().bool_array_value (warn); |
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317 } |
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318 |
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319 template <class DMT, class MT> |
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320 charNDArray |
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321 octave_base_diag<DMT, MT>::char_array_value (bool warn) const |
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322 { |
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323 return to_dense ().char_array_value (warn); |
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324 } |
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325 |
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326 template <class DMT, class MT> |
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327 SparseMatrix |
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328 octave_base_diag<DMT, MT>::sparse_matrix_value (bool) const |
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329 { |
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330 return SparseMatrix (diag_matrix_value ()); |
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331 } |
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332 |
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333 template <class DMT, class MT> |
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334 SparseComplexMatrix |
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335 octave_base_diag<DMT, MT>::sparse_complex_matrix_value (bool) const |
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336 { |
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337 return SparseComplexMatrix (complex_diag_matrix_value ()); |
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338 } |
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339 |
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340 template <class DMT, class MT> |
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341 idx_vector |
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342 octave_base_diag<DMT, MT>::index_vector (void) const |
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343 { |
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344 return to_dense ().index_vector (); |
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345 } |
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346 |
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347 template <class DMT, class MT> |
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348 octave_value |
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349 octave_base_diag<DMT, MT>::convert_to_str_internal (bool pad, bool force, char type) const |
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350 { |
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351 return to_dense ().convert_to_str_internal (pad, force, type); |
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352 } |
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353 |
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354 template <class DMT, class MT> |
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355 bool |
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356 octave_base_diag<DMT, MT>::save_ascii (std::ostream& os) |
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357 { |
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358 // FIXME: this should probably save the matrix as diagonal. |
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359 return to_dense ().save_ascii (os); |
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360 } |
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361 |
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362 template <class DMT, class MT> |
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363 bool |
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364 octave_base_diag<DMT, MT>::save_binary (std::ostream& os, bool& save_as_floats) |
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365 { |
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366 return to_dense ().save_binary (os, save_as_floats); |
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367 } |
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368 |
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369 #if defined (HAVE_HDF5) |
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370 |
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371 template <class DMT, class MT> |
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372 bool |
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373 octave_base_diag<DMT, MT>::save_hdf5 (hid_t loc_id, const char *name, bool save_as_floats) |
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374 { |
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375 return to_dense ().save_hdf5 (loc_id, name, save_as_floats); |
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376 } |
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377 |
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378 #endif |
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379 |
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380 template <class DMT, class MT> |
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381 void |
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382 octave_base_diag<DMT, MT>::print_raw (std::ostream& os, |
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383 bool pr_as_read_syntax) const |
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384 { |
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385 return to_dense ().print_raw (os, pr_as_read_syntax); |
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386 } |
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387 |
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388 template <class DMT, class MT> |
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389 mxArray * |
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390 octave_base_diag<DMT, MT>::as_mxArray (void) const |
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391 { |
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392 return to_dense ().as_mxArray (); |
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393 } |
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394 |
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395 template <class DMT, class MT> |
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396 bool |
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397 octave_base_diag<DMT, MT>::print_as_scalar (void) const |
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398 { |
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399 dim_vector dv = dims (); |
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400 |
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401 return (dv.all_ones () || dv.any_zero ()); |
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402 } |
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403 |
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404 template <class DMT, class MT> |
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405 void |
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406 octave_base_diag<DMT, MT>::print (std::ostream& os, bool pr_as_read_syntax) const |
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407 { |
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408 to_dense ().print (os, pr_as_read_syntax); |
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409 } |
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410 template <class DMT, class MT> |
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411 int |
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412 octave_base_diag<DMT, MT>::write (octave_stream& os, int block_size, |
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413 oct_data_conv::data_type output_type, int skip, |
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414 oct_mach_info::float_format flt_fmt) const |
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415 { |
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416 return to_dense ().write (os, block_size, output_type, skip, flt_fmt); |
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417 } |
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418 |
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419 template <class DMT, class MT> |
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420 void |
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421 octave_base_diag<DMT, MT>::print_info (std::ostream& os, |
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422 const std::string& prefix) const |
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423 { |
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424 matrix.print_info (os, prefix); |
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425 } |
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426 |
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427 template <class DMT, class MT> |
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428 octave_value |
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429 octave_base_diag<DMT, MT>::to_dense (void) const |
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430 { |
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431 if (! dense_cache.is_defined ()) |
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432 dense_cache = MT (matrix); |
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433 |
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434 return dense_cache; |
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435 } |
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436 |
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437 #define FORWARD_MAPPER(MAP) \ |
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438 template <class DMT, class MT> \ |
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439 octave_value \ |
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440 octave_base_diag<DMT, MT>::MAP (void) const \ |
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441 { \ |
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442 return to_dense ().MAP (); \ |
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443 } |
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444 |
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445 FORWARD_MAPPER (erf) |
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446 FORWARD_MAPPER (erfc) |
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447 FORWARD_MAPPER (gamma) |
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448 FORWARD_MAPPER (lgamma) |
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449 FORWARD_MAPPER (acos) |
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450 FORWARD_MAPPER (acosh) |
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451 FORWARD_MAPPER (angle) |
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452 FORWARD_MAPPER (arg) |
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453 FORWARD_MAPPER (asin) |
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454 FORWARD_MAPPER (asinh) |
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455 FORWARD_MAPPER (atan) |
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456 FORWARD_MAPPER (atanh) |
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457 FORWARD_MAPPER (ceil) |
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458 FORWARD_MAPPER (cos) |
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459 FORWARD_MAPPER (cosh) |
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460 FORWARD_MAPPER (exp) |
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461 FORWARD_MAPPER (expm1) |
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462 FORWARD_MAPPER (fix) |
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463 FORWARD_MAPPER (floor) |
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464 FORWARD_MAPPER (log) |
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465 FORWARD_MAPPER (log2) |
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466 FORWARD_MAPPER (log10) |
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467 FORWARD_MAPPER (log1p) |
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468 FORWARD_MAPPER (round) |
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469 FORWARD_MAPPER (roundb) |
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470 FORWARD_MAPPER (signum) |
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471 FORWARD_MAPPER (sin) |
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472 FORWARD_MAPPER (sinh) |
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473 FORWARD_MAPPER (sqrt) |
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474 FORWARD_MAPPER (tan) |
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475 FORWARD_MAPPER (tanh) |
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476 FORWARD_MAPPER (finite) |
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477 FORWARD_MAPPER (isinf) |
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478 FORWARD_MAPPER (isna) |
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479 FORWARD_MAPPER (isnan) |
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480 |