Mercurial > octave
annotate liboctave/array/fCDiagMatrix.cc @ 25054:6652d3823428 stable
maint: Update copyright dates in all source files.
author | John W. Eaton <jwe@octave.org> |
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date | Fri, 30 Mar 2018 09:19:05 -0400 |
parents | 194eb4bd202b |
children | cb1606f78f6b |
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1 /* |
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2 |
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3 Copyright (C) 1994-2018 John W. Eaton |
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4 Copyright (C) 2009 VZLU Prague |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software: you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by |
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10 the Free Software Foundation, either version 3 of the License, or |
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11 (at your option) any later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but |
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14 WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 GNU General Public License for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, see |
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20 <https://www.gnu.org/licenses/>. |
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21 |
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22 */ |
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23 |
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24 #if defined (HAVE_CONFIG_H) |
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25 # include "config.h" |
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26 #endif |
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27 |
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28 #include <iostream> |
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29 |
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30 #include "Array-util.h" |
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31 #include "lo-error.h" |
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32 #include "lo-ieee.h" |
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33 #include "mx-base.h" |
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34 #include "mx-inlines.cc" |
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35 #include "oct-cmplx.h" |
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36 |
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37 // FloatComplex Diagonal Matrix class |
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38 |
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39 FloatComplexDiagMatrix::FloatComplexDiagMatrix (const FloatDiagMatrix& a) |
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40 : MDiagArray2<FloatComplex> (a.rows (), a.cols ()) |
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41 { |
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42 for (octave_idx_type i = 0; i < length (); i++) |
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43 elem (i, i) = a.elem (i, i); |
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44 } |
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45 |
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46 bool |
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47 FloatComplexDiagMatrix::operator == (const FloatComplexDiagMatrix& a) const |
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48 { |
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49 if (rows () != a.rows () || cols () != a.cols ()) |
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50 return 0; |
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51 |
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52 return mx_inline_equal (length (), data (), a.data ()); |
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53 } |
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54 |
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55 bool |
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56 FloatComplexDiagMatrix::operator != (const FloatComplexDiagMatrix& a) const |
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57 { |
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58 return !(*this == a); |
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59 } |
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60 |
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61 FloatComplexDiagMatrix& |
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62 FloatComplexDiagMatrix::fill (float val) |
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63 { |
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64 for (octave_idx_type i = 0; i < length (); i++) |
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65 elem (i, i) = val; |
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66 return *this; |
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67 } |
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68 |
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69 FloatComplexDiagMatrix& |
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70 FloatComplexDiagMatrix::fill (const FloatComplex& val) |
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71 { |
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72 for (octave_idx_type i = 0; i < length (); i++) |
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73 elem (i, i) = val; |
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74 return *this; |
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75 } |
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76 |
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77 FloatComplexDiagMatrix& |
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78 FloatComplexDiagMatrix::fill (float val, |
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79 octave_idx_type beg, octave_idx_type end) |
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80 { |
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81 if (beg < 0 || end >= length () || end < beg) |
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82 (*current_liboctave_error_handler) ("range error for fill"); |
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83 |
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84 for (octave_idx_type i = beg; i <= end; i++) |
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85 elem (i, i) = val; |
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86 |
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87 return *this; |
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88 } |
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89 |
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90 FloatComplexDiagMatrix& |
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91 FloatComplexDiagMatrix::fill (const FloatComplex& val, |
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92 octave_idx_type beg, octave_idx_type end) |
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93 { |
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94 if (beg < 0 || end >= length () || end < beg) |
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95 (*current_liboctave_error_handler) ("range error for fill"); |
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96 |
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97 for (octave_idx_type i = beg; i <= end; i++) |
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98 elem (i, i) = val; |
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99 |
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100 return *this; |
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101 } |
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102 |
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103 FloatComplexDiagMatrix& |
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104 FloatComplexDiagMatrix::fill (const FloatColumnVector& a) |
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105 { |
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106 octave_idx_type len = length (); |
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107 if (a.numel () != len) |
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108 (*current_liboctave_error_handler) ("range error for fill"); |
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109 |
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110 for (octave_idx_type i = 0; i < len; i++) |
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111 elem (i, i) = a.elem (i); |
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112 |
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113 return *this; |
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114 } |
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115 |
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116 FloatComplexDiagMatrix& |
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117 FloatComplexDiagMatrix::fill (const FloatComplexColumnVector& a) |
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118 { |
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119 octave_idx_type len = length (); |
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120 if (a.numel () != len) |
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121 (*current_liboctave_error_handler) ("range error for fill"); |
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122 |
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123 for (octave_idx_type i = 0; i < len; i++) |
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124 elem (i, i) = a.elem (i); |
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125 |
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126 return *this; |
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127 } |
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128 |
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129 FloatComplexDiagMatrix& |
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130 FloatComplexDiagMatrix::fill (const FloatRowVector& a) |
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131 { |
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132 octave_idx_type len = length (); |
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133 if (a.numel () != len) |
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134 (*current_liboctave_error_handler) ("range error for fill"); |
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135 |
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136 for (octave_idx_type i = 0; i < len; i++) |
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137 elem (i, i) = a.elem (i); |
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138 |
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139 return *this; |
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140 } |
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141 |
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142 FloatComplexDiagMatrix& |
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143 FloatComplexDiagMatrix::fill (const FloatComplexRowVector& a) |
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144 { |
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145 octave_idx_type len = length (); |
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146 if (a.numel () != len) |
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147 (*current_liboctave_error_handler) ("range error for fill"); |
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148 |
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149 for (octave_idx_type i = 0; i < len; i++) |
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150 elem (i, i) = a.elem (i); |
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151 |
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152 return *this; |
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153 } |
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154 |
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155 FloatComplexDiagMatrix& |
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156 FloatComplexDiagMatrix::fill (const FloatColumnVector& a, octave_idx_type beg) |
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157 { |
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158 octave_idx_type a_len = a.numel (); |
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159 if (beg < 0 || beg + a_len >= length ()) |
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160 (*current_liboctave_error_handler) ("range error for fill"); |
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161 |
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162 for (octave_idx_type i = 0; i < a_len; i++) |
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163 elem (i+beg, i+beg) = a.elem (i); |
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164 |
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165 return *this; |
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166 } |
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167 |
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168 FloatComplexDiagMatrix& |
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169 FloatComplexDiagMatrix::fill (const FloatComplexColumnVector& a, |
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170 octave_idx_type beg) |
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171 { |
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172 octave_idx_type a_len = a.numel (); |
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173 if (beg < 0 || beg + a_len >= length ()) |
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174 (*current_liboctave_error_handler) ("range error for fill"); |
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175 |
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176 for (octave_idx_type i = 0; i < a_len; i++) |
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177 elem (i+beg, i+beg) = a.elem (i); |
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178 |
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179 return *this; |
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180 } |
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181 |
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182 FloatComplexDiagMatrix& |
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183 FloatComplexDiagMatrix::fill (const FloatRowVector& a, octave_idx_type beg) |
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184 { |
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185 octave_idx_type a_len = a.numel (); |
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186 if (beg < 0 || beg + a_len >= length ()) |
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187 (*current_liboctave_error_handler) ("range error for fill"); |
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188 |
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189 for (octave_idx_type i = 0; i < a_len; i++) |
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190 elem (i+beg, i+beg) = a.elem (i); |
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191 |
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192 return *this; |
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193 } |
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194 |
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195 FloatComplexDiagMatrix& |
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196 FloatComplexDiagMatrix::fill (const FloatComplexRowVector& a, |
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197 octave_idx_type beg) |
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198 { |
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199 octave_idx_type a_len = a.numel (); |
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200 if (beg < 0 || beg + a_len >= length ()) |
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201 (*current_liboctave_error_handler) ("range error for fill"); |
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202 |
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203 for (octave_idx_type i = 0; i < a_len; i++) |
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204 elem (i+beg, i+beg) = a.elem (i); |
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205 |
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206 return *this; |
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207 } |
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208 |
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209 FloatDiagMatrix |
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210 FloatComplexDiagMatrix::abs (void) const |
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211 { |
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212 return FloatDiagMatrix (extract_diag ().abs (), rows (), columns ()); |
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213 } |
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214 |
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215 FloatComplexDiagMatrix |
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216 conj (const FloatComplexDiagMatrix& a) |
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217 { |
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218 return FloatComplexDiagMatrix (conj (a.extract_diag ()), a.rows (), |
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219 a.columns ()); |
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220 } |
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221 |
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222 // resize is the destructive analog for this one |
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223 |
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224 FloatComplexMatrix |
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225 FloatComplexDiagMatrix::extract (octave_idx_type r1, octave_idx_type c1, |
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226 octave_idx_type r2, octave_idx_type c2) const |
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227 { |
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228 if (r1 > r2) { std::swap (r1, r2); } |
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229 if (c1 > c2) { std::swap (c1, c2); } |
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230 |
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231 octave_idx_type new_r = r2 - r1 + 1; |
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232 octave_idx_type new_c = c2 - c1 + 1; |
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233 |
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234 FloatComplexMatrix result (new_r, new_c); |
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235 |
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236 for (octave_idx_type j = 0; j < new_c; j++) |
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237 for (octave_idx_type i = 0; i < new_r; i++) |
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238 result.elem (i, j) = elem (r1+i, c1+j); |
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239 |
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240 return result; |
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241 } |
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242 |
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243 // extract row or column i. |
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244 |
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245 FloatComplexRowVector |
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246 FloatComplexDiagMatrix::row (octave_idx_type i) const |
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247 { |
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248 octave_idx_type r = rows (); |
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249 octave_idx_type c = cols (); |
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250 if (i < 0 || i >= r) |
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251 (*current_liboctave_error_handler) ("invalid row selection"); |
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252 |
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253 FloatComplexRowVector retval (c, 0.0); |
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254 if (r <= c || (r > c && i < c)) |
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255 retval.elem (i) = elem (i, i); |
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256 |
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257 return retval; |
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258 } |
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259 |
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260 FloatComplexRowVector |
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261 FloatComplexDiagMatrix::row (char *s) const |
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262 { |
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263 if (! s) |
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264 (*current_liboctave_error_handler) ("invalid row selection"); |
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265 |
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266 char c = *s; |
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267 if (c == 'f' || c == 'F') |
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268 return row (static_cast<octave_idx_type>(0)); |
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269 else if (c == 'l' || c == 'L') |
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270 return row (rows () - 1); |
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271 else |
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272 (*current_liboctave_error_handler) ("invalid row selection"); |
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273 } |
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274 |
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275 FloatComplexColumnVector |
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276 FloatComplexDiagMatrix::column (octave_idx_type i) const |
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277 { |
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278 octave_idx_type r = rows (); |
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279 octave_idx_type c = cols (); |
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280 if (i < 0 || i >= c) |
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281 (*current_liboctave_error_handler) ("invalid column selection"); |
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282 |
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283 FloatComplexColumnVector retval (r, 0.0); |
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284 if (r >= c || (r < c && i < r)) |
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285 retval.elem (i) = elem (i, i); |
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286 |
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287 return retval; |
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288 } |
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289 |
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290 FloatComplexColumnVector |
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291 FloatComplexDiagMatrix::column (char *s) const |
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292 { |
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293 if (! s) |
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294 (*current_liboctave_error_handler) ("invalid column selection"); |
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295 |
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296 char c = *s; |
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297 if (c == 'f' || c == 'F') |
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298 return column (static_cast<octave_idx_type>(0)); |
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299 else if (c == 'l' || c == 'L') |
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300 return column (cols () - 1); |
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301 else |
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302 (*current_liboctave_error_handler) ("invalid column selection"); |
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303 } |
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304 |
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305 FloatComplexDiagMatrix |
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306 FloatComplexDiagMatrix::inverse (void) const |
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307 { |
8811 | 308 octave_idx_type info; |
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309 return inverse (info); |
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310 } |
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311 |
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312 FloatComplexDiagMatrix |
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314 { |
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315 octave_idx_type r = rows (); |
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316 octave_idx_type c = cols (); |
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317 if (r != c) |
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318 (*current_liboctave_error_handler) ("inverse requires square matrix"); |
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319 |
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320 FloatComplexDiagMatrix retval (r, c); |
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321 |
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322 info = 0; |
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323 for (octave_idx_type i = 0; i < length (); i++) |
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324 { |
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325 if (elem (i, i) == 0.0f) |
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326 { |
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327 info = -1; |
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328 return *this; |
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329 } |
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330 else |
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331 retval.elem (i, i) = 1.0f / elem (i, i); |
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332 } |
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333 |
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334 return retval; |
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335 } |
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336 |
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337 FloatComplexDiagMatrix |
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338 FloatComplexDiagMatrix::pseudo_inverse (float tol) const |
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339 { |
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340 octave_idx_type r = rows (); |
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341 octave_idx_type c = cols (); |
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342 octave_idx_type len = length (); |
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343 |
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344 FloatComplexDiagMatrix retval (c, r); |
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345 |
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346 for (octave_idx_type i = 0; i < len; i++) |
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347 { |
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348 float val = std::abs (elem (i, i)); |
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349 if (val < tol || val == 0.0f) |
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350 retval.elem (i, i) = 0.0f; |
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351 else |
18494 | 352 retval.elem (i, i) = 1.0f / elem (i, i); |
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353 } |
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354 |
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355 return retval; |
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356 } |
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357 |
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358 bool |
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359 FloatComplexDiagMatrix::all_elements_are_real (void) const |
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360 { |
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361 return mx_inline_all_real (length (), data ()); |
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362 } |
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363 |
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364 // diagonal matrix by diagonal matrix -> diagonal matrix operations |
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365 |
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366 FloatComplexDiagMatrix& |
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367 FloatComplexDiagMatrix::operator += (const FloatDiagMatrix& a) |
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368 { |
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369 octave_idx_type r = rows (); |
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370 octave_idx_type c = cols (); |
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371 |
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372 octave_idx_type a_nr = a.rows (); |
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373 octave_idx_type a_nc = a.cols (); |
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374 |
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375 if (r != a_nr || c != a_nc) |
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376 octave::err_nonconformant ("operator +=", r, c, a_nr, a_nc); |
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377 |
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378 if (r == 0 || c == 0) |
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379 return *this; |
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380 |
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381 FloatComplex *d = fortran_vec (); // Ensures only 1 reference to my privates! |
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382 |
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383 mx_inline_add2 (length (), d, a.data ()); |
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384 return *this; |
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385 } |
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386 |
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387 FloatComplexDiagMatrix |
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388 operator * (const FloatComplexDiagMatrix& a, const FloatDiagMatrix& b) |
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389 { |
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390 octave_idx_type a_nr = a.rows (); |
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391 octave_idx_type a_nc = a.cols (); |
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392 |
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393 octave_idx_type b_nr = b.rows (); |
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394 octave_idx_type b_nc = b.cols (); |
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395 |
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396 if (a_nc != b_nr) |
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397 octave::err_nonconformant ("operator *", a_nr, a_nc, b_nr, b_nc); |
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398 |
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399 FloatComplexDiagMatrix c (a_nr, b_nc); |
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400 |
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401 octave_idx_type len = c.length (); |
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402 octave_idx_type lenm = (len < a_nc ? len : a_nc); |
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403 |
9698
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404 for (octave_idx_type i = 0; i < lenm; i++) |
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405 c.dgxelem (i) = a.dgelem (i) * b.dgelem (i); |
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406 for (octave_idx_type i = lenm; i < len; i++) |
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407 c.dgxelem (i) = 0.0f; |
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408 |
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409 return c; |
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410 } |
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411 |
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412 FloatComplexDiagMatrix |
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413 operator * (const FloatDiagMatrix& a, const FloatComplexDiagMatrix& b) |
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414 { |
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415 octave_idx_type a_nr = a.rows (); |
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416 octave_idx_type a_nc = a.cols (); |
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417 |
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418 octave_idx_type b_nr = b.rows (); |
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419 octave_idx_type b_nc = b.cols (); |
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420 |
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421 if (a_nc != b_nr) |
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422 octave::err_nonconformant ("operator *", a_nr, a_nc, b_nr, b_nc); |
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423 |
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424 if (a_nr == 0 || a_nc == 0 || b_nc == 0) |
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425 return FloatComplexDiagMatrix (a_nr, a_nc, 0.0); |
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426 |
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427 FloatComplexDiagMatrix c (a_nr, b_nc); |
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428 |
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429 octave_idx_type len = (a_nr < b_nc ? a_nr : b_nc); |
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430 |
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431 for (octave_idx_type i = 0; i < len; i++) |
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432 { |
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433 float a_element = a.elem (i, i); |
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434 FloatComplex b_element = b.elem (i, i); |
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435 |
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436 c.elem (i, i) = a_element * b_element; |
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437 } |
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438 |
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439 return c; |
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440 } |
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441 |
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442 FloatComplexDiagMatrix |
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443 operator * (const FloatComplexDiagMatrix& a, const FloatComplexDiagMatrix& b) |
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444 { |
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445 octave_idx_type a_nr = a.rows (); |
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446 octave_idx_type a_nc = a.cols (); |
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447 |
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448 octave_idx_type b_nr = b.rows (); |
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449 octave_idx_type b_nc = b.cols (); |
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450 |
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451 if (a_nc != b_nr) |
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452 octave::err_nonconformant ("operator *", a_nr, a_nc, b_nr, b_nc); |
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453 |
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454 if (a_nr == 0 || a_nc == 0 || b_nc == 0) |
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455 return FloatComplexDiagMatrix (a_nr, a_nc, 0.0); |
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456 |
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457 FloatComplexDiagMatrix c (a_nr, b_nc); |
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458 |
23450
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459 octave_idx_type len = (a_nr < b_nc ? a_nr : b_nc); |
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460 |
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461 for (octave_idx_type i = 0; i < len; i++) |
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462 { |
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463 FloatComplex a_element = a.elem (i, i); |
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464 FloatComplex b_element = b.elem (i, i); |
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465 |
8380
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466 c.elem (i, i) = a_element * b_element; |
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467 } |
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468 |
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469 return c; |
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470 } |
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471 |
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|
472 // other operations |
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|
473 |
8371
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474 FloatComplexDET |
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475 FloatComplexDiagMatrix::determinant (void) const |
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476 { |
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|
477 FloatComplexDET det (1.0f); |
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|
478 if (rows () != cols ()) |
21136
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parents:
21129
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|
479 (*current_liboctave_error_handler) ("determinant requires square matrix"); |
7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Rik <rik@octave.org>
parents:
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|
480 |
7cac4e7458f2
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Rik <rik@octave.org>
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21129
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|
481 octave_idx_type len = length (); |
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maint: clean up code around calls to current_liboctave_error_handler.
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|
482 for (octave_idx_type i = 0; i < len; i++) |
7cac4e7458f2
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parents:
21129
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changeset
|
483 det *= elem (i, i); |
8371
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|
484 |
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|
485 return det; |
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|
486 } |
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|
487 |
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|
488 float |
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|
489 FloatComplexDiagMatrix::rcond (void) const |
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|
490 { |
15448
0a0912a9ab6e
Replace deprecated DiagArray2<T>::diag calls with DiagArray2<T>::extract_diag
Jordi Gutiérrez Hermoso <jordigh@octave.org>
parents:
15271
diff
changeset
|
491 FloatColumnVector av = extract_diag (0).map<float> (std::abs); |
18084
8e056300994b
Follow coding convention of defining and initializing only 1 variable per line in liboctave.
Rik <rik@octave.org>
parents:
17769
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|
492 float amx = av.max (); |
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Follow coding convention of defining and initializing only 1 variable per line in liboctave.
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17769
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|
493 float amn = av.min (); |
8371
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494 return amx == 0 ? 0.0f : amn / amx; |
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|
495 } |
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|
496 |
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|
497 // i/o |
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diff
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|
498 |
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diff
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|
499 std::ostream& |
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diff
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|
500 operator << (std::ostream& os, const FloatComplexDiagMatrix& a) |
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|
501 { |
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|
502 FloatComplex ZERO (0.0); |
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|
503 // int field_width = os.precision () + 7; |
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|
504 for (octave_idx_type i = 0; i < a.rows (); i++) |
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|
505 { |
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|
506 for (octave_idx_type j = 0; j < a.cols (); j++) |
10314
07ebe522dac2
untabify liboctave C++ sources
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diff
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|
507 { |
07ebe522dac2
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parents:
10158
diff
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|
508 if (i == j) |
23807
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Use character literals 'c' rather than string literals "c" when possible.
Rik <rik@octave.org>
parents:
23461
diff
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|
509 os << ' ' /* setw (field_width) */ << a.elem (i, i); |
10314
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parents:
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diff
changeset
|
510 else |
23807
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parents:
23461
diff
changeset
|
511 os << ' ' /* setw (field_width) */ << ZERO; |
10314
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untabify liboctave C++ sources
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parents:
10158
diff
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|
512 } |
7789
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diff
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|
513 os << "\n"; |
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diff
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|
514 } |
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diff
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|
515 return os; |
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diff
changeset
|
516 } |