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1993
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1 // Matrix manipulations. |
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458
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2 /* |
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3 |
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4 Copyright (C) 1996, 1997 John W. Eaton |
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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 the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 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, write to the Free |
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20 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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21 02110-1301, USA. |
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22 |
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23 */ |
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24 |
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25 #ifdef HAVE_CONFIG_H |
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1192
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26 #include <config.h> |
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458
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27 #endif |
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28 |
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1367
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29 #include <cfloat> |
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30 |
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3503
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31 #include <iostream> |
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6209
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32 #include <vector> |
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1367
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33 |
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4669
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34 #include "Array-util.h" |
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2317
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35 #include "byte-swap.h" |
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2828
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36 #include "dMatrix.h" |
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1819
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37 #include "dbleAEPBAL.h" |
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458
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38 #include "dbleDET.h" |
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1819
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39 #include "dbleSCHUR.h" |
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740
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40 #include "dbleSVD.h" |
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6207
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41 #include "dbleCHOL.h" |
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1847
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42 #include "f77-fcn.h" |
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458
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43 #include "lo-error.h" |
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2354
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44 #include "lo-ieee.h" |
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45 #include "lo-mappers.h" |
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1968
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46 #include "lo-utils.h" |
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1367
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47 #include "mx-base.h" |
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2828
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48 #include "mx-m-dm.h" |
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3176
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49 #include "mx-dm-m.h" |
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1367
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50 #include "mx-inlines.cc" |
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1650
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51 #include "oct-cmplx.h" |
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4153
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52 #include "quit.h" |
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53 |
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4773
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54 #if defined (HAVE_FFTW3) |
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3827
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55 #include "oct-fftw.h" |
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56 #endif |
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57 |
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458
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58 // Fortran functions we call. |
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59 |
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60 extern "C" |
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61 { |
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4552
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62 F77_RET_T |
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63 F77_FUNC (dgebal, DGEBAL) (F77_CONST_CHAR_ARG_DECL, |
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5275
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64 const octave_idx_type&, double*, const octave_idx_type&, octave_idx_type&, |
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65 octave_idx_type&, double*, octave_idx_type& |
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66 F77_CHAR_ARG_LEN_DECL); |
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67 |
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68 F77_RET_T |
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69 F77_FUNC (dgebak, DGEBAK) (F77_CONST_CHAR_ARG_DECL, |
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70 F77_CONST_CHAR_ARG_DECL, |
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5275
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71 const octave_idx_type&, const octave_idx_type&, const octave_idx_type&, double*, |
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72 const octave_idx_type&, double*, const octave_idx_type&, octave_idx_type& |
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73 F77_CHAR_ARG_LEN_DECL |
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74 F77_CHAR_ARG_LEN_DECL); |
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75 |
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76 |
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77 F77_RET_T |
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78 F77_FUNC (dgemm, DGEMM) (F77_CONST_CHAR_ARG_DECL, |
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79 F77_CONST_CHAR_ARG_DECL, |
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80 const octave_idx_type&, const octave_idx_type&, const octave_idx_type&, |
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81 const double&, const double*, const octave_idx_type&, |
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82 const double*, const octave_idx_type&, const double&, |
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83 double*, const octave_idx_type& |
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84 F77_CHAR_ARG_LEN_DECL |
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85 F77_CHAR_ARG_LEN_DECL); |
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86 |
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87 F77_RET_T |
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5983
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88 F77_FUNC (dgemv, DGEMV) (F77_CONST_CHAR_ARG_DECL, |
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89 const octave_idx_type&, const octave_idx_type&, const double&, |
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90 const double*, const octave_idx_type&, const double*, |
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91 const octave_idx_type&, const double&, double*, |
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92 const octave_idx_type& |
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93 F77_CHAR_ARG_LEN_DECL); |
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94 |
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95 F77_RET_T |
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96 F77_FUNC (xddot, XDDOT) (const octave_idx_type&, const double*, const octave_idx_type&, |
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97 const double*, const octave_idx_type&, double&); |
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98 |
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99 F77_RET_T |
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100 F77_FUNC (dgetrf, DGETRF) (const octave_idx_type&, const octave_idx_type&, double*, const octave_idx_type&, |
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101 octave_idx_type*, octave_idx_type&); |
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102 |
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103 F77_RET_T |
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104 F77_FUNC (dgetrs, DGETRS) (F77_CONST_CHAR_ARG_DECL, const octave_idx_type&, const octave_idx_type&, |
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105 const double*, const octave_idx_type&, |
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106 const octave_idx_type*, double*, const octave_idx_type&, octave_idx_type& |
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107 F77_CHAR_ARG_LEN_DECL); |
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108 |
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109 F77_RET_T |
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110 F77_FUNC (dgetri, DGETRI) (const octave_idx_type&, double*, const octave_idx_type&, const octave_idx_type*, |
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111 double*, const octave_idx_type&, octave_idx_type&); |
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112 |
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113 F77_RET_T |
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114 F77_FUNC (dgecon, DGECON) (F77_CONST_CHAR_ARG_DECL, const octave_idx_type&, double*, |
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115 const octave_idx_type&, const double&, double&, |
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116 double*, octave_idx_type*, octave_idx_type& |
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117 F77_CHAR_ARG_LEN_DECL); |
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118 |
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119 F77_RET_T |
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5275
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120 F77_FUNC (dgelss, DGELSS) (const octave_idx_type&, const octave_idx_type&, const octave_idx_type&, |
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121 double*, const octave_idx_type&, double*, |
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122 const octave_idx_type&, double*, double&, octave_idx_type&, |
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123 double*, const octave_idx_type&, octave_idx_type&); |
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124 |
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5785
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125 F77_RET_T |
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126 F77_FUNC (dpotrf, DPOTRF) (F77_CONST_CHAR_ARG_DECL, const octave_idx_type&, |
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127 double *, const octave_idx_type&, |
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128 octave_idx_type& F77_CHAR_ARG_LEN_DECL); |
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129 |
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130 F77_RET_T |
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131 F77_FUNC (dpocon, DPOCON) (F77_CONST_CHAR_ARG_DECL, const octave_idx_type&, |
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132 double*, const octave_idx_type&, const double&, |
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133 double&, double*, octave_idx_type*, |
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134 octave_idx_type& F77_CHAR_ARG_LEN_DECL); |
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135 F77_RET_T |
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136 F77_FUNC (dpotrs, DPOTRS) (F77_CONST_CHAR_ARG_DECL, const octave_idx_type&, |
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137 const octave_idx_type&, const double*, |
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138 const octave_idx_type&, double*, |
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139 const octave_idx_type&, octave_idx_type& |
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140 F77_CHAR_ARG_LEN_DECL); |
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141 |
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142 F77_RET_T |
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6207
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143 F77_FUNC (dtrtri, DTRTRI) (F77_CONST_CHAR_ARG_DECL, F77_CONST_CHAR_ARG_DECL, |
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144 const octave_idx_type&, const double*, |
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145 const octave_idx_type&, octave_idx_type& |
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146 F77_CHAR_ARG_LEN_DECL |
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147 F77_CHAR_ARG_LEN_DECL); |
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148 F77_RET_T |
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5785
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149 F77_FUNC (dtrcon, DTRCON) (F77_CONST_CHAR_ARG_DECL, F77_CONST_CHAR_ARG_DECL, |
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150 F77_CONST_CHAR_ARG_DECL, const octave_idx_type&, |
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151 const double*, const octave_idx_type&, double&, |
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152 double*, octave_idx_type*, octave_idx_type& |
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153 F77_CHAR_ARG_LEN_DECL |
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154 F77_CHAR_ARG_LEN_DECL |
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155 F77_CHAR_ARG_LEN_DECL); |
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156 F77_RET_T |
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157 F77_FUNC (dtrtrs, DTRTRS) (F77_CONST_CHAR_ARG_DECL, F77_CONST_CHAR_ARG_DECL, |
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158 F77_CONST_CHAR_ARG_DECL, const octave_idx_type&, |
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159 const octave_idx_type&, const double*, |
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160 const octave_idx_type&, double*, |
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161 const octave_idx_type&, octave_idx_type& |
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162 F77_CHAR_ARG_LEN_DECL |
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163 F77_CHAR_ARG_LEN_DECL |
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164 F77_CHAR_ARG_LEN_DECL); |
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165 |
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1360
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166 // Note that the original complex fft routines were not written for |
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167 // double complex arguments. They have been modified by adding an |
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168 // implicit double precision (a-h,o-z) statement at the beginning of |
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169 // each subroutine. |
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170 |
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171 F77_RET_T |
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172 F77_FUNC (cffti, CFFTI) (const octave_idx_type&, Complex*); |
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173 |
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174 F77_RET_T |
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175 F77_FUNC (cfftf, CFFTF) (const octave_idx_type&, Complex*, Complex*); |
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176 |
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177 F77_RET_T |
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178 F77_FUNC (cfftb, CFFTB) (const octave_idx_type&, Complex*, Complex*); |
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179 |
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180 F77_RET_T |
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181 F77_FUNC (dlartg, DLARTG) (const double&, const double&, double&, |
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182 double&, double&); |
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183 |
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184 F77_RET_T |
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185 F77_FUNC (dtrsyl, DTRSYL) (F77_CONST_CHAR_ARG_DECL, |
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186 F77_CONST_CHAR_ARG_DECL, |
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187 const octave_idx_type&, const octave_idx_type&, const octave_idx_type&, |
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188 const double*, const octave_idx_type&, const double*, |
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189 const octave_idx_type&, const double*, const octave_idx_type&, |
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190 double&, octave_idx_type& |
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4552
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191 F77_CHAR_ARG_LEN_DECL |
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192 F77_CHAR_ARG_LEN_DECL); |
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193 |
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194 F77_RET_T |
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195 F77_FUNC (xdlange, XDLANGE) (F77_CONST_CHAR_ARG_DECL, const octave_idx_type&, |
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196 const octave_idx_type&, const double*, |
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197 const octave_idx_type&, double*, double& |
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198 F77_CHAR_ARG_LEN_DECL); |
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458
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199 } |
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200 |
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1360
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201 // Matrix class. |
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458
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202 |
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2349
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203 Matrix::Matrix (const RowVector& rv) |
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204 : MArray2<double> (1, rv.length (), 0.0) |
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205 { |
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206 for (octave_idx_type i = 0; i < rv.length (); i++) |
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207 elem (0, i) = rv.elem (i); |
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208 } |
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209 |
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210 Matrix::Matrix (const ColumnVector& cv) |
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211 : MArray2<double> (cv.length (), 1, 0.0) |
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212 { |
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213 for (octave_idx_type i = 0; i < cv.length (); i++) |
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214 elem (i, 0) = cv.elem (i); |
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215 } |
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216 |
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458
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217 Matrix::Matrix (const DiagMatrix& a) |
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1214
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218 : MArray2<double> (a.rows (), a.cols (), 0.0) |
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219 { |
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220 for (octave_idx_type i = 0; i < a.length (); i++) |
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221 elem (i, i) = a.elem (i, i); |
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222 } |
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223 |
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5775
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224 // FIXME -- could we use a templated mixed-type copy function |
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1574
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225 // here? |
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226 |
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227 Matrix::Matrix (const boolMatrix& a) |
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228 : MArray2<double> (a.rows (), a.cols ()) |
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229 { |
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230 for (octave_idx_type i = 0; i < a.rows (); i++) |
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231 for (octave_idx_type j = 0; j < a.cols (); j++) |
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232 elem (i, j) = a.elem (i, j); |
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233 } |
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234 |
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1574
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235 Matrix::Matrix (const charMatrix& a) |
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236 : MArray2<double> (a.rows (), a.cols ()) |
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237 { |
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238 for (octave_idx_type i = 0; i < a.rows (); i++) |
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239 for (octave_idx_type j = 0; j < a.cols (); j++) |
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240 elem (i, j) = a.elem (i, j); |
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241 } |
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242 |
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2385
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243 bool |
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458
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244 Matrix::operator == (const Matrix& a) const |
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245 { |
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246 if (rows () != a.rows () || cols () != a.cols ()) |
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2385
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247 return false; |
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458
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248 |
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3769
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249 return mx_inline_equal (data (), a.data (), length ()); |
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458
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250 } |
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251 |
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2385
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252 bool |
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458
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253 Matrix::operator != (const Matrix& a) const |
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254 { |
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255 return !(*this == a); |
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256 } |
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257 |
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3354
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258 bool |
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259 Matrix::is_symmetric (void) const |
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260 { |
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261 if (is_square () && rows () > 0) |
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262 { |
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263 for (octave_idx_type i = 0; i < rows (); i++) |
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264 for (octave_idx_type j = i+1; j < cols (); j++) |
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3354
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265 if (elem (i, j) != elem (j, i)) |
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266 return false; |
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267 |
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268 return true; |
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269 } |
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270 |
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271 return false; |
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272 } |
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273 |
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458
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274 Matrix& |
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275 Matrix::insert (const Matrix& a, octave_idx_type r, octave_idx_type c) |
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458
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276 { |
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1561
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277 Array2<double>::insert (a, r, c); |
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458
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278 return *this; |
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279 } |
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280 |
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281 Matrix& |
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5275
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282 Matrix::insert (const RowVector& a, octave_idx_type r, octave_idx_type c) |
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458
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283 { |
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284 octave_idx_type a_len = a.length (); |
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4316
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285 |
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1698
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286 if (r < 0 || r >= rows () || c < 0 || c + a_len > cols ()) |
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458
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287 { |
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288 (*current_liboctave_error_handler) ("range error for insert"); |
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289 return *this; |
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290 } |
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291 |
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4316
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292 if (a_len > 0) |
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293 { |
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294 make_unique (); |
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295 |
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296 for (octave_idx_type i = 0; i < a_len; i++) |
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297 xelem (r, c+i) = a.elem (i); |
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298 } |
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458
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299 |
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300 return *this; |
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301 } |
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302 |
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303 Matrix& |
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5275
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304 Matrix::insert (const ColumnVector& a, octave_idx_type r, octave_idx_type c) |
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458
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305 { |
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5275
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306 octave_idx_type a_len = a.length (); |
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4316
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307 |
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1698
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308 if (r < 0 || r + a_len > rows () || c < 0 || c >= cols ()) |
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458
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309 { |
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310 (*current_liboctave_error_handler) ("range error for insert"); |
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311 return *this; |
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312 } |
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313 |
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4316
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314 if (a_len > 0) |
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315 { |
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316 make_unique (); |
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317 |
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5275
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318 for (octave_idx_type i = 0; i < a_len; i++) |
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319 xelem (r+i, c) = a.elem (i); |
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320 } |
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458
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321 |
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322 return *this; |
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323 } |
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324 |
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325 Matrix& |
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5275
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326 Matrix::insert (const DiagMatrix& a, octave_idx_type r, octave_idx_type c) |
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458
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327 { |
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5275
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328 octave_idx_type a_nr = a.rows (); |
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329 octave_idx_type a_nc = a.cols (); |
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1697
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330 |
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1698
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331 if (r < 0 || r + a_nr > rows () || c < 0 || c + a_nc > cols ()) |
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458
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332 { |
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333 (*current_liboctave_error_handler) ("range error for insert"); |
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334 return *this; |
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335 } |
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336 |
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1697
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337 fill (0.0, r, c, r + a_nr - 1, c + a_nc - 1); |
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338 |
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5275
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339 octave_idx_type a_len = a.length (); |
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4316
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340 |
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341 if (a_len > 0) |
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342 { |
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343 make_unique (); |
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344 |
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5275
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345 for (octave_idx_type i = 0; i < a_len; i++) |
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4316
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346 xelem (r+i, c+i) = a.elem (i, i); |
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347 } |
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458
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348 |
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349 return *this; |
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350 } |
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351 |
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352 Matrix& |
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353 Matrix::fill (double val) |
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354 { |
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5275
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355 octave_idx_type nr = rows (); |
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356 octave_idx_type nc = cols (); |
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4316
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357 |
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458
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358 if (nr > 0 && nc > 0) |
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4316
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359 { |
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360 make_unique (); |
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361 |
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5275
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362 for (octave_idx_type j = 0; j < nc; j++) |
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363 for (octave_idx_type i = 0; i < nr; i++) |
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4316
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364 xelem (i, j) = val; |
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365 } |
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458
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366 |
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367 return *this; |
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368 } |
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369 |
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370 Matrix& |
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5275
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371 Matrix::fill (double val, octave_idx_type r1, octave_idx_type c1, octave_idx_type r2, octave_idx_type c2) |
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458
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372 { |
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5275
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373 octave_idx_type nr = rows (); |
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374 octave_idx_type nc = cols (); |
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4316
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375 |
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458
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376 if (r1 < 0 || r2 < 0 || c1 < 0 || c2 < 0 |
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377 || r1 >= nr || r2 >= nr || c1 >= nc || c2 >= nc) |
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378 { |
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379 (*current_liboctave_error_handler) ("range error for fill"); |
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380 return *this; |
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381 } |
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382 |
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5275
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383 if (r1 > r2) { octave_idx_type tmp = r1; r1 = r2; r2 = tmp; } |
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384 if (c1 > c2) { octave_idx_type tmp = c1; c1 = c2; c2 = tmp; } |
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458
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385 |
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4316
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386 if (r2 >= r1 && c2 >= c1) |
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387 { |
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|
388 make_unique (); |
|
|
389 |
|
5275
|
390 for (octave_idx_type j = c1; j <= c2; j++) |
|
|
391 for (octave_idx_type i = r1; i <= r2; i++) |
|
4316
|
392 xelem (i, j) = val; |
|
|
393 } |
|
458
|
394 |
|
|
395 return *this; |
|
|
396 } |
|
|
397 |
|
|
398 Matrix |
|
|
399 Matrix::append (const Matrix& a) const |
|
|
400 { |
|
5275
|
401 octave_idx_type nr = rows (); |
|
|
402 octave_idx_type nc = cols (); |
|
458
|
403 if (nr != a.rows ()) |
|
|
404 { |
|
|
405 (*current_liboctave_error_handler) ("row dimension mismatch for append"); |
|
|
406 return Matrix (); |
|
|
407 } |
|
|
408 |
|
5275
|
409 octave_idx_type nc_insert = nc; |
|
458
|
410 Matrix retval (nr, nc + a.cols ()); |
|
|
411 retval.insert (*this, 0, 0); |
|
|
412 retval.insert (a, 0, nc_insert); |
|
|
413 return retval; |
|
|
414 } |
|
|
415 |
|
|
416 Matrix |
|
|
417 Matrix::append (const RowVector& a) const |
|
|
418 { |
|
5275
|
419 octave_idx_type nr = rows (); |
|
|
420 octave_idx_type nc = cols (); |
|
458
|
421 if (nr != 1) |
|
|
422 { |
|
|
423 (*current_liboctave_error_handler) ("row dimension mismatch for append"); |
|
|
424 return Matrix (); |
|
|
425 } |
|
|
426 |
|
5275
|
427 octave_idx_type nc_insert = nc; |
|
458
|
428 Matrix retval (nr, nc + a.length ()); |
|
|
429 retval.insert (*this, 0, 0); |
|
|
430 retval.insert (a, 0, nc_insert); |
|
|
431 return retval; |
|
|
432 } |
|
|
433 |
|
|
434 Matrix |
|
|
435 Matrix::append (const ColumnVector& a) const |
|
|
436 { |
|
5275
|
437 octave_idx_type nr = rows (); |
|
|
438 octave_idx_type nc = cols (); |
|
458
|
439 if (nr != a.length ()) |
|
|
440 { |
|
|
441 (*current_liboctave_error_handler) ("row dimension mismatch for append"); |
|
|
442 return Matrix (); |
|
|
443 } |
|
|
444 |
|
5275
|
445 octave_idx_type nc_insert = nc; |
|
458
|
446 Matrix retval (nr, nc + 1); |
|
|
447 retval.insert (*this, 0, 0); |
|
|
448 retval.insert (a, 0, nc_insert); |
|
|
449 return retval; |
|
|
450 } |
|
|
451 |
|
|
452 Matrix |
|
|
453 Matrix::append (const DiagMatrix& a) const |
|
|
454 { |
|
5275
|
455 octave_idx_type nr = rows (); |
|
|
456 octave_idx_type nc = cols (); |
|
458
|
457 if (nr != a.rows ()) |
|
|
458 { |
|
|
459 (*current_liboctave_error_handler) ("row dimension mismatch for append"); |
|
|
460 return *this; |
|
|
461 } |
|
|
462 |
|
5275
|
463 octave_idx_type nc_insert = nc; |
|
458
|
464 Matrix retval (nr, nc + a.cols ()); |
|
|
465 retval.insert (*this, 0, 0); |
|
|
466 retval.insert (a, 0, nc_insert); |
|
|
467 return retval; |
|
|
468 } |
|
|
469 |
|
|
470 Matrix |
|
|
471 Matrix::stack (const Matrix& a) const |
|
|
472 { |
|
5275
|
473 octave_idx_type nr = rows (); |
|
|
474 octave_idx_type nc = cols (); |
|
458
|
475 if (nc != a.cols ()) |
|
|
476 { |
|
|
477 (*current_liboctave_error_handler) |
|
|
478 ("column dimension mismatch for stack"); |
|
|
479 return Matrix (); |
|
|
480 } |
|
|
481 |
|
5275
|
482 octave_idx_type nr_insert = nr; |
|
458
|
483 Matrix retval (nr + a.rows (), nc); |
|
|
484 retval.insert (*this, 0, 0); |
|
|
485 retval.insert (a, nr_insert, 0); |
|
|
486 return retval; |
|
|
487 } |
|
|
488 |
|
|
489 Matrix |
|
|
490 Matrix::stack (const RowVector& a) const |
|
|
491 { |
|
5275
|
492 octave_idx_type nr = rows (); |
|
|
493 octave_idx_type nc = cols (); |
|
458
|
494 if (nc != a.length ()) |
|
|
495 { |
|
|
496 (*current_liboctave_error_handler) |
|
|
497 ("column dimension mismatch for stack"); |
|
|
498 return Matrix (); |
|
|
499 } |
|
|
500 |
|
5275
|
501 octave_idx_type nr_insert = nr; |
|
458
|
502 Matrix retval (nr + 1, nc); |
|
|
503 retval.insert (*this, 0, 0); |
|
|
504 retval.insert (a, nr_insert, 0); |
|
|
505 return retval; |
|
|
506 } |
|
|
507 |
|
|
508 Matrix |
|
|
509 Matrix::stack (const ColumnVector& a) const |
|
|
510 { |
|
5275
|
511 octave_idx_type nr = rows (); |
|
|
512 octave_idx_type nc = cols (); |
|
458
|
513 if (nc != 1) |
|
|
514 { |
|
|
515 (*current_liboctave_error_handler) |
|
|
516 ("column dimension mismatch for stack"); |
|
|
517 return Matrix (); |
|
|
518 } |
|
|
519 |
|
5275
|
520 octave_idx_type nr_insert = nr; |
|
458
|
521 Matrix retval (nr + a.length (), nc); |
|
|
522 retval.insert (*this, 0, 0); |
|
|
523 retval.insert (a, nr_insert, 0); |
|
|
524 return retval; |
|
|
525 } |
|
|
526 |
|
|
527 Matrix |
|
|
528 Matrix::stack (const DiagMatrix& a) const |
|
|
529 { |
|
5275
|
530 octave_idx_type nr = rows (); |
|
|
531 octave_idx_type nc = cols (); |
|
458
|
532 if (nc != a.cols ()) |
|
|
533 { |
|
|
534 (*current_liboctave_error_handler) |
|
|
535 ("column dimension mismatch for stack"); |
|
|
536 return Matrix (); |
|
|
537 } |
|
|
538 |
|
5275
|
539 octave_idx_type nr_insert = nr; |
|
458
|
540 Matrix retval (nr + a.rows (), nc); |
|
|
541 retval.insert (*this, 0, 0); |
|
|
542 retval.insert (a, nr_insert, 0); |
|
|
543 return retval; |
|
|
544 } |
|
|
545 |
|
|
546 Matrix |
|
1205
|
547 real (const ComplexMatrix& a) |
|
|
548 { |
|
5275
|
549 octave_idx_type a_len = a.length (); |
|
1205
|
550 Matrix retval; |
|
|
551 if (a_len > 0) |
|
3769
|
552 retval = Matrix (mx_inline_real_dup (a.data (), a_len), |
|
|
553 a.rows (), a.cols ()); |
|
1205
|
554 return retval; |
|
|
555 } |
|
|
556 |
|
|
557 Matrix |
|
|
558 imag (const ComplexMatrix& a) |
|
|
559 { |
|
5275
|
560 octave_idx_type a_len = a.length (); |
|
1205
|
561 Matrix retval; |
|
|
562 if (a_len > 0) |
|
3769
|
563 retval = Matrix (mx_inline_imag_dup (a.data (), a_len), |
|
|
564 a.rows (), a.cols ()); |
|
1205
|
565 return retval; |
|
|
566 } |
|
|
567 |
|
|
568 Matrix |
|
5275
|
569 Matrix::extract (octave_idx_type r1, octave_idx_type c1, octave_idx_type r2, octave_idx_type c2) const |
|
458
|
570 { |
|
5275
|
571 if (r1 > r2) { octave_idx_type tmp = r1; r1 = r2; r2 = tmp; } |
|
|
572 if (c1 > c2) { octave_idx_type tmp = c1; c1 = c2; c2 = tmp; } |
|
|
573 |
|
|
574 octave_idx_type new_r = r2 - r1 + 1; |
|
|
575 octave_idx_type new_c = c2 - c1 + 1; |
|
458
|
576 |
|
|
577 Matrix result (new_r, new_c); |
|
|
578 |
|
5275
|
579 for (octave_idx_type j = 0; j < new_c; j++) |
|
|
580 for (octave_idx_type i = 0; i < new_r; i++) |
|
4316
|
581 result.xelem (i, j) = elem (r1+i, c1+j); |
|
|
582 |
|
|
583 return result; |
|
|
584 } |
|
|
585 |
|
|
586 Matrix |
|
5275
|
587 Matrix::extract_n (octave_idx_type r1, octave_idx_type c1, octave_idx_type nr, octave_idx_type nc) const |
|
4316
|
588 { |
|
|
589 Matrix result (nr, nc); |
|
|
590 |
|
5275
|
591 for (octave_idx_type j = 0; j < nc; j++) |
|
|
592 for (octave_idx_type i = 0; i < nr; i++) |
|
4316
|
593 result.xelem (i, j) = elem (r1+i, c1+j); |
|
458
|
594 |
|
|
595 return result; |
|
|
596 } |
|
|
597 |
|
|
598 // extract row or column i. |
|
|
599 |
|
|
600 RowVector |
|
5275
|
601 Matrix::row (octave_idx_type i) const |
|
458
|
602 { |
|
5275
|
603 octave_idx_type nc = cols (); |
|
458
|
604 if (i < 0 || i >= rows ()) |
|
|
605 { |
|
|
606 (*current_liboctave_error_handler) ("invalid row selection"); |
|
|
607 return RowVector (); |
|
|
608 } |
|
|
609 |
|
|
610 RowVector retval (nc); |
|
5275
|
611 for (octave_idx_type j = 0; j < nc; j++) |
|
4316
|
612 retval.xelem (j) = elem (i, j); |
|
458
|
613 |
|
|
614 return retval; |
|
|
615 } |
|
|
616 |
|
|
617 ColumnVector |
|
5275
|
618 Matrix::column (octave_idx_type i) const |
|
458
|
619 { |
|
5275
|
620 octave_idx_type nr = rows (); |
|
458
|
621 if (i < 0 || i >= cols ()) |
|
|
622 { |
|
|
623 (*current_liboctave_error_handler) ("invalid column selection"); |
|
|
624 return ColumnVector (); |
|
|
625 } |
|
|
626 |
|
|
627 ColumnVector retval (nr); |
|
5275
|
628 for (octave_idx_type j = 0; j < nr; j++) |
|
4316
|
629 retval.xelem (j) = elem (j, i); |
|
458
|
630 |
|
|
631 return retval; |
|
|
632 } |
|
|
633 |
|
|
634 Matrix |
|
|
635 Matrix::inverse (void) const |
|
|
636 { |
|
5275
|
637 octave_idx_type info; |
|
458
|
638 double rcond; |
|
6207
|
639 MatrixType mattype (*this); |
|
|
640 return inverse (mattype, info, rcond, 0, 0); |
|
|
641 } |
|
|
642 |
|
|
643 Matrix |
|
6479
|
644 Matrix::inverse (octave_idx_type& info) const |
|
|
645 { |
|
|
646 double rcond; |
|
|
647 MatrixType mattype (*this); |
|
|
648 return inverse (mattype, info, rcond, 0, 0); |
|
|
649 } |
|
|
650 |
|
|
651 Matrix |
|
|
652 Matrix::inverse (octave_idx_type& info, double& rcond, int force, |
|
|
653 int calc_cond) const |
|
|
654 { |
|
|
655 MatrixType mattype (*this); |
|
|
656 return inverse (mattype, info, rcond, force, calc_cond); |
|
|
657 } |
|
|
658 |
|
|
659 Matrix |
|
6207
|
660 Matrix::inverse (MatrixType& mattype) const |
|
|
661 { |
|
|
662 octave_idx_type info; |
|
|
663 double rcond; |
|
|
664 return inverse (mattype, info, rcond, 0, 0); |
|
|
665 } |
|
|
666 |
|
|
667 Matrix |
|
|
668 Matrix::inverse (MatrixType &mattype, octave_idx_type& info) const |
|
|
669 { |
|
|
670 double rcond; |
|
|
671 return inverse (mattype, info, rcond, 0, 0); |
|
458
|
672 } |
|
|
673 |
|
|
674 Matrix |
|
6207
|
675 Matrix::tinverse (MatrixType &mattype, octave_idx_type& info, double& rcond, |
|
|
676 int force, int calc_cond) const |
|
458
|
677 { |
|
6207
|
678 Matrix retval; |
|
|
679 |
|
|
680 octave_idx_type nr = rows (); |
|
|
681 octave_idx_type nc = cols (); |
|
|
682 |
|
|
683 if (nr != nc || nr == 0 || nc == 0) |
|
|
684 (*current_liboctave_error_handler) ("inverse requires square matrix"); |
|
|
685 else |
|
|
686 { |
|
|
687 int typ = mattype.type (); |
|
|
688 char uplo = (typ == MatrixType::Lower ? 'L' : 'U'); |
|
|
689 char udiag = 'N'; |
|
|
690 retval = *this; |
|
|
691 double *tmp_data = retval.fortran_vec (); |
|
|
692 |
|
|
693 F77_XFCN (dtrtri, DTRTRI, (F77_CONST_CHAR_ARG2 (&uplo, 1), |
|
|
694 F77_CONST_CHAR_ARG2 (&udiag, 1), |
|
|
695 nr, tmp_data, nr, info |
|
|
696 F77_CHAR_ARG_LEN (1) |
|
|
697 F77_CHAR_ARG_LEN (1))); |
|
|
698 |
|
|
699 if (f77_exception_encountered) |
|
|
700 (*current_liboctave_error_handler) ("unrecoverable error in dtrtri"); |
|
|
701 else |
|
|
702 { |
|
|
703 // Throw-away extra info LAPACK gives so as to not change output. |
|
|
704 rcond = 0.0; |
|
|
705 if (info != 0) |
|
|
706 info = -1; |
|
|
707 else if (calc_cond) |
|
|
708 { |
|
|
709 octave_idx_type dtrcon_info = 0; |
|
|
710 char job = '1'; |
|
|
711 |
|
|
712 OCTAVE_LOCAL_BUFFER (double, work, 3 * nr); |
|
|
713 OCTAVE_LOCAL_BUFFER (octave_idx_type, iwork, nr); |
|
|
714 |
|
|
715 F77_XFCN (dtrcon, DTRCON, (F77_CONST_CHAR_ARG2 (&job, 1), |
|
|
716 F77_CONST_CHAR_ARG2 (&uplo, 1), |
|
|
717 F77_CONST_CHAR_ARG2 (&udiag, 1), |
|
|
718 nr, tmp_data, nr, rcond, |
|
|
719 work, iwork, dtrcon_info |
|
|
720 F77_CHAR_ARG_LEN (1) |
|
|
721 F77_CHAR_ARG_LEN (1) |
|
|
722 F77_CHAR_ARG_LEN (1))); |
|
|
723 |
|
|
724 if (f77_exception_encountered) |
|
|
725 (*current_liboctave_error_handler) |
|
|
726 ("unrecoverable error in dtrcon"); |
|
|
727 |
|
|
728 if (dtrcon_info != 0) |
|
|
729 info = -1; |
|
|
730 } |
|
|
731 } |
|
|
732 |
|
|
733 if (info == -1 && ! force) |
|
|
734 retval = *this; // Restore matrix contents. |
|
|
735 } |
|
|
736 |
|
|
737 return retval; |
|
458
|
738 } |
|
|
739 |
|
6207
|
740 |
|
458
|
741 Matrix |
|
6207
|
742 Matrix::finverse (MatrixType &mattype, octave_idx_type& info, double& rcond, |
|
|
743 int force, int calc_cond) const |
|
458
|
744 { |
|
1948
|
745 Matrix retval; |
|
|
746 |
|
5275
|
747 octave_idx_type nr = rows (); |
|
|
748 octave_idx_type nc = cols (); |
|
1948
|
749 |
|
458
|
750 if (nr != nc || nr == 0 || nc == 0) |
|
1948
|
751 (*current_liboctave_error_handler) ("inverse requires square matrix"); |
|
458
|
752 else |
|
|
753 { |
|
5275
|
754 Array<octave_idx_type> ipvt (nr); |
|
|
755 octave_idx_type *pipvt = ipvt.fortran_vec (); |
|
1948
|
756 |
|
|
757 retval = *this; |
|
|
758 double *tmp_data = retval.fortran_vec (); |
|
|
759 |
|
4329
|
760 Array<double> z(1); |
|
5275
|
761 octave_idx_type lwork = -1; |
|
4329
|
762 |
|
4330
|
763 // Query the optimum work array size. |
|
4329
|
764 F77_XFCN (dgetri, DGETRI, (nc, tmp_data, nr, pipvt, |
|
|
765 z.fortran_vec (), lwork, info)); |
|
|
766 |
|
|
767 if (f77_exception_encountered) |
|
|
768 { |
|
|
769 (*current_liboctave_error_handler) |
|
|
770 ("unrecoverable error in dgetri"); |
|
|
771 return retval; |
|
|
772 } |
|
|
773 |
|
5275
|
774 lwork = static_cast<octave_idx_type> (z(0)); |
|
4329
|
775 lwork = (lwork < 2 *nc ? 2*nc : lwork); |
|
|
776 z.resize (lwork); |
|
|
777 double *pz = z.fortran_vec (); |
|
|
778 |
|
|
779 info = 0; |
|
|
780 |
|
4330
|
781 // Calculate the norm of the matrix, for later use. |
|
4329
|
782 double anorm = 0; |
|
|
783 if (calc_cond) |
|
5275
|
784 anorm = retval.abs().sum().row(static_cast<octave_idx_type>(0)).max(); |
|
4329
|
785 |
|
|
786 F77_XFCN (dgetrf, DGETRF, (nc, nc, tmp_data, nr, pipvt, info)); |
|
1948
|
787 |
|
|
788 if (f77_exception_encountered) |
|
4329
|
789 (*current_liboctave_error_handler) ("unrecoverable error in dgetrf"); |
|
1948
|
790 else |
|
|
791 { |
|
4330
|
792 // Throw-away extra info LAPACK gives so as to not change output. |
|
4509
|
793 rcond = 0.0; |
|
|
794 if (info != 0) |
|
1948
|
795 info = -1; |
|
4329
|
796 else if (calc_cond) |
|
|
797 { |
|
5275
|
798 octave_idx_type dgecon_info = 0; |
|
5061
|
799 |
|
4330
|
800 // Now calculate the condition number for non-singular matrix. |
|
4329
|
801 char job = '1'; |
|
5275
|
802 Array<octave_idx_type> iz (nc); |
|
|
803 octave_idx_type *piz = iz.fortran_vec (); |
|
4552
|
804 F77_XFCN (dgecon, DGECON, (F77_CONST_CHAR_ARG2 (&job, 1), |
|
|
805 nc, tmp_data, nr, anorm, |
|
5061
|
806 rcond, pz, piz, dgecon_info |
|
4552
|
807 F77_CHAR_ARG_LEN (1))); |
|
4329
|
808 |
|
|
809 if (f77_exception_encountered) |
|
|
810 (*current_liboctave_error_handler) |
|
|
811 ("unrecoverable error in dgecon"); |
|
|
812 |
|
5061
|
813 if (dgecon_info != 0) |
|
4329
|
814 info = -1; |
|
|
815 } |
|
1948
|
816 |
|
|
817 if (info == -1 && ! force) |
|
|
818 retval = *this; // Restore matrix contents. |
|
|
819 else |
|
|
820 { |
|
5275
|
821 octave_idx_type dgetri_info = 0; |
|
5061
|
822 |
|
4329
|
823 F77_XFCN (dgetri, DGETRI, (nc, tmp_data, nr, pipvt, |
|
5061
|
824 pz, lwork, dgetri_info)); |
|
1948
|
825 |
|
|
826 if (f77_exception_encountered) |
|
|
827 (*current_liboctave_error_handler) |
|
4329
|
828 ("unrecoverable error in dgetri"); |
|
|
829 |
|
5061
|
830 if (dgetri_info != 0) |
|
4329
|
831 info = -1; |
|
1948
|
832 } |
|
|
833 } |
|
6207
|
834 |
|
|
835 if (info != 0) |
|
|
836 mattype.mark_as_rectangular(); |
|
458
|
837 } |
|
|
838 |
|
1948
|
839 return retval; |
|
458
|
840 } |
|
|
841 |
|
740
|
842 Matrix |
|
6207
|
843 Matrix::inverse (MatrixType &mattype, octave_idx_type& info, double& rcond, |
|
|
844 int force, int calc_cond) const |
|
|
845 { |
|
|
846 int typ = mattype.type (false); |
|
|
847 Matrix ret; |
|
|
848 |
|
|
849 if (typ == MatrixType::Unknown) |
|
|
850 typ = mattype.type (*this); |
|
|
851 |
|
|
852 if (typ == MatrixType::Upper || typ == MatrixType::Lower) |
|
|
853 ret = tinverse (mattype, info, rcond, force, calc_cond); |
|
|
854 else if (typ != MatrixType::Rectangular) |
|
|
855 { |
|
|
856 if (mattype.is_hermitian ()) |
|
|
857 { |
|
6486
|
858 CHOL chol (*this, info, calc_cond); |
|
6207
|
859 if (info == 0) |
|
6486
|
860 { |
|
|
861 if (calc_cond) |
|
|
862 rcond = chol.rcond (); |
|
|
863 else |
|
|
864 rcond = 1.0; |
|
|
865 ret = chol.inverse (); |
|
|
866 } |
|
6207
|
867 else |
|
|
868 mattype.mark_as_unsymmetric (); |
|
|
869 } |
|
|
870 |
|
|
871 if (!mattype.is_hermitian ()) |
|
|
872 ret = finverse(mattype, info, rcond, force, calc_cond); |
|
|
873 } |
|
|
874 |
|
|
875 return ret; |
|
|
876 } |
|
|
877 |
|
|
878 Matrix |
|
4384
|
879 Matrix::pseudo_inverse (double tol) const |
|
740
|
880 { |
|
3480
|
881 SVD result (*this, SVD::economy); |
|
740
|
882 |
|
|
883 DiagMatrix S = result.singular_values (); |
|
|
884 Matrix U = result.left_singular_matrix (); |
|
|
885 Matrix V = result.right_singular_matrix (); |
|
|
886 |
|
|
887 ColumnVector sigma = S.diag (); |
|
|
888 |
|
5275
|
889 octave_idx_type r = sigma.length () - 1; |
|
|
890 octave_idx_type nr = rows (); |
|
|
891 octave_idx_type nc = cols (); |
|
740
|
892 |
|
|
893 if (tol <= 0.0) |
|
|
894 { |
|
|
895 if (nr > nc) |
|
|
896 tol = nr * sigma.elem (0) * DBL_EPSILON; |
|
|
897 else |
|
|
898 tol = nc * sigma.elem (0) * DBL_EPSILON; |
|
|
899 } |
|
|
900 |
|
|
901 while (r >= 0 && sigma.elem (r) < tol) |
|
|
902 r--; |
|
|
903 |
|
|
904 if (r < 0) |
|
|
905 return Matrix (nc, nr, 0.0); |
|
|
906 else |
|
|
907 { |
|
|
908 Matrix Ur = U.extract (0, 0, nr-1, r); |
|
|
909 DiagMatrix D = DiagMatrix (sigma.extract (0, r)) . inverse (); |
|
|
910 Matrix Vr = V.extract (0, 0, nc-1, r); |
|
|
911 return Vr * D * Ur.transpose (); |
|
|
912 } |
|
|
913 } |
|
|
914 |
|
4773
|
915 #if defined (HAVE_FFTW3) |
|
3827
|
916 |
|
|
917 ComplexMatrix |
|
|
918 Matrix::fourier (void) const |
|
|
919 { |
|
|
920 size_t nr = rows (); |
|
|
921 size_t nc = cols (); |
|
|
922 |
|
|
923 ComplexMatrix retval (nr, nc); |
|
|
924 |
|
|
925 size_t npts, nsamples; |
|
|
926 |
|
|
927 if (nr == 1 || nc == 1) |
|
|
928 { |
|
|
929 npts = nr > nc ? nr : nc; |
|
|
930 nsamples = 1; |
|
|
931 } |
|
|
932 else |
|
|
933 { |
|
|
934 npts = nr; |
|
|
935 nsamples = nc; |
|
|
936 } |
|
|
937 |
|
4773
|
938 const double *in (fortran_vec ()); |
|
3827
|
939 Complex *out (retval.fortran_vec ()); |
|
|
940 |
|
4773
|
941 octave_fftw::fft (in, out, npts, nsamples); |
|
3827
|
942 |
|
|
943 return retval; |
|
|
944 } |
|
|
945 |
|
|
946 ComplexMatrix |
|
|
947 Matrix::ifourier (void) const |
|
|
948 { |
|
|
949 size_t nr = rows (); |
|
|
950 size_t nc = cols (); |
|
|
951 |
|
|
952 ComplexMatrix retval (nr, nc); |
|
|
953 |
|
|
954 size_t npts, nsamples; |
|
|
955 |
|
|
956 if (nr == 1 || nc == 1) |
|
|
957 { |
|
|
958 npts = nr > nc ? nr : nc; |
|
|
959 nsamples = 1; |
|
|
960 } |
|
|
961 else |
|
|
962 { |
|
|
963 npts = nr; |
|
|
964 nsamples = nc; |
|
|
965 } |
|
|
966 |
|
|
967 ComplexMatrix tmp (*this); |
|
|
968 Complex *in (tmp.fortran_vec ()); |
|
|
969 Complex *out (retval.fortran_vec ()); |
|
|
970 |
|
4773
|
971 octave_fftw::ifft (in, out, npts, nsamples); |
|
3827
|
972 |
|
|
973 return retval; |
|
|
974 } |
|
|
975 |
|
|
976 ComplexMatrix |
|
|
977 Matrix::fourier2d (void) const |
|
|
978 { |
|
4773
|
979 dim_vector dv(rows (), cols ()); |
|
|
980 |
|
|
981 const double *in = fortran_vec (); |
|
|
982 ComplexMatrix retval (rows (), cols ()); |
|
|
983 octave_fftw::fftNd (in, retval.fortran_vec (), 2, dv); |
|
3827
|
984 |
|
|
985 return retval; |
|
|
986 } |
|
|
987 |
|
|
988 ComplexMatrix |
|
|
989 Matrix::ifourier2d (void) const |
|
|
990 { |
|
4773
|
991 dim_vector dv(rows (), cols ()); |
|
3827
|
992 |
|
|
993 ComplexMatrix retval (*this); |
|
4773
|
994 Complex *out (retval.fortran_vec ()); |
|
|
995 |
|
|
996 octave_fftw::ifftNd (out, out, 2, dv); |
|
3827
|
997 |
|
|
998 return retval; |
|
|
999 } |
|
|
1000 |
|
|
1001 #else |
|
|
1002 |
|
458
|
1003 ComplexMatrix |
|
|
1004 Matrix::fourier (void) const |
|
|
1005 { |
|
1948
|
1006 ComplexMatrix retval; |
|
|
1007 |
|
5275
|
1008 octave_idx_type nr = rows (); |
|
|
1009 octave_idx_type nc = cols (); |
|
|
1010 |
|
|
1011 octave_idx_type npts, nsamples; |
|
1948
|
1012 |
|
458
|
1013 if (nr == 1 || nc == 1) |
|
|
1014 { |
|
|
1015 npts = nr > nc ? nr : nc; |
|
|
1016 nsamples = 1; |
|
|
1017 } |
|
|
1018 else |
|
|
1019 { |
|
|
1020 npts = nr; |
|
|
1021 nsamples = nc; |
|
|
1022 } |
|
|
1023 |
|
5275
|
1024 octave_idx_type nn = 4*npts+15; |
|
1948
|
1025 |
|
|
1026 Array<Complex> wsave (nn); |
|
|
1027 Complex *pwsave = wsave.fortran_vec (); |
|
|
1028 |
|
3585
|
1029 retval = ComplexMatrix (*this); |
|
1948
|
1030 Complex *tmp_data = retval.fortran_vec (); |
|
|
1031 |
|
3887
|
1032 F77_FUNC (cffti, CFFTI) (npts, pwsave); |
|
458
|
1033 |
|
5275
|
1034 for (octave_idx_type j = 0; j < nsamples; j++) |
|
4153
|
1035 { |
|
|
1036 OCTAVE_QUIT; |
|
|
1037 |
|
|
1038 F77_FUNC (cfftf, CFFTF) (npts, &tmp_data[npts*j], pwsave); |
|
|
1039 } |
|
1948
|
1040 |
|
|
1041 return retval; |
|
458
|
1042 } |
|
|
1043 |
|
|
1044 ComplexMatrix |
|
|
1045 Matrix::ifourier (void) const |
|
|
1046 { |
|
1948
|
1047 ComplexMatrix retval; |
|
|
1048 |
|
5275
|
1049 octave_idx_type nr = rows (); |
|
|
1050 octave_idx_type nc = cols (); |
|
|
1051 |
|
|
1052 octave_idx_type npts, nsamples; |
|
1948
|
1053 |
|
458
|
1054 if (nr == 1 || nc == 1) |
|
|
1055 { |
|
|
1056 npts = nr > nc ? nr : nc; |
|
|
1057 nsamples = 1; |
|
|
1058 } |
|
|
1059 else |
|
|
1060 { |
|
|
1061 npts = nr; |
|
|
1062 nsamples = nc; |
|
|
1063 } |
|
|
1064 |
|
5275
|
1065 octave_idx_type nn = 4*npts+15; |
|
1948
|
1066 |
|
|
1067 Array<Complex> wsave (nn); |
|
|
1068 Complex *pwsave = wsave.fortran_vec (); |
|
|
1069 |
|
3585
|
1070 retval = ComplexMatrix (*this); |
|
1948
|
1071 Complex *tmp_data = retval.fortran_vec (); |
|
|
1072 |
|
3887
|
1073 F77_FUNC (cffti, CFFTI) (npts, pwsave); |
|
458
|
1074 |
|
5275
|
1075 for (octave_idx_type j = 0; j < nsamples; j++) |
|
4153
|
1076 { |
|
|
1077 OCTAVE_QUIT; |
|
|
1078 |
|
|
1079 F77_FUNC (cfftb, CFFTB) (npts, &tmp_data[npts*j], pwsave); |
|
|
1080 } |
|
458
|
1081 |
|
5275
|
1082 for (octave_idx_type j = 0; j < npts*nsamples; j++) |
|
3572
|
1083 tmp_data[j] = tmp_data[j] / static_cast<double> (npts); |
|
458
|
1084 |
|
1948
|
1085 return retval; |
|
458
|
1086 } |
|
|
1087 |
|
677
|
1088 ComplexMatrix |
|
|
1089 Matrix::fourier2d (void) const |
|
|
1090 { |
|
1948
|
1091 ComplexMatrix retval; |
|
|
1092 |
|
5275
|
1093 octave_idx_type nr = rows (); |
|
|
1094 octave_idx_type nc = cols (); |
|
|
1095 |
|
|
1096 octave_idx_type npts, nsamples; |
|
1948
|
1097 |
|
677
|
1098 if (nr == 1 || nc == 1) |
|
|
1099 { |
|
|
1100 npts = nr > nc ? nr : nc; |
|
|
1101 nsamples = 1; |
|
|
1102 } |
|
|
1103 else |
|
|
1104 { |
|
|
1105 npts = nr; |
|
|
1106 nsamples = nc; |
|
|
1107 } |
|
|
1108 |
|
5275
|
1109 octave_idx_type nn = 4*npts+15; |
|
1948
|
1110 |
|
|
1111 Array<Complex> wsave (nn); |
|
|
1112 Complex *pwsave = wsave.fortran_vec (); |
|
|
1113 |
|
3585
|
1114 retval = ComplexMatrix (*this); |
|
1948
|
1115 Complex *tmp_data = retval.fortran_vec (); |
|
|
1116 |
|
3887
|
1117 F77_FUNC (cffti, CFFTI) (npts, pwsave); |
|
677
|
1118 |
|
5275
|
1119 for (octave_idx_type j = 0; j < nsamples; j++) |
|
4153
|
1120 { |
|
|
1121 OCTAVE_QUIT; |
|
|
1122 |
|
|
1123 F77_FUNC (cfftf, CFFTF) (npts, &tmp_data[npts*j], pwsave); |
|
|
1124 } |
|
677
|
1125 |
|
|
1126 npts = nc; |
|
|
1127 nsamples = nr; |
|
|
1128 nn = 4*npts+15; |
|
1948
|
1129 |
|
|
1130 wsave.resize (nn); |
|
|
1131 pwsave = wsave.fortran_vec (); |
|
|
1132 |
|
4773
|
1133 Array<Complex> tmp (npts); |
|
|
1134 Complex *prow = tmp.fortran_vec (); |
|
1948
|
1135 |
|
3887
|
1136 F77_FUNC (cffti, CFFTI) (npts, pwsave); |
|
677
|
1137 |
|
5275
|
1138 for (octave_idx_type j = 0; j < nsamples; j++) |
|
677
|
1139 { |
|
4153
|
1140 OCTAVE_QUIT; |
|
|
1141 |
|
5275
|
1142 for (octave_idx_type i = 0; i < npts; i++) |
|
1948
|
1143 prow[i] = tmp_data[i*nr + j]; |
|
|
1144 |
|
3887
|
1145 F77_FUNC (cfftf, CFFTF) (npts, prow, pwsave); |
|
677
|
1146 |
|
5275
|
1147 for (octave_idx_type i = 0; i < npts; i++) |
|
1948
|
1148 tmp_data[i*nr + j] = prow[i]; |
|
677
|
1149 } |
|
|
1150 |
|
1948
|
1151 return retval; |
|
677
|
1152 } |
|
|
1153 |
|
|
1154 ComplexMatrix |
|
|
1155 Matrix::ifourier2d (void) const |
|
|
1156 { |
|
1948
|
1157 ComplexMatrix retval; |
|
|
1158 |
|
5275
|
1159 octave_idx_type nr = rows (); |
|
|
1160 octave_idx_type nc = cols (); |
|
|
1161 |
|
|
1162 octave_idx_type npts, nsamples; |
|
1948
|
1163 |
|
677
|
1164 if (nr == 1 || nc == 1) |
|
|
1165 { |
|
|
1166 npts = nr > nc ? nr : nc; |
|
|
1167 nsamples = 1; |
|
|
1168 } |
|
|
1169 else |
|
|
1170 { |
|
|
1171 npts = nr; |
|
|
1172 nsamples = nc; |
|
|
1173 } |
|
|
1174 |
|
5275
|
1175 octave_idx_type nn = 4*npts+15; |
|
1948
|
1176 |
|
|
1177 Array<Complex> wsave (nn); |
|
|
1178 Complex *pwsave = wsave.fortran_vec (); |
|
|
1179 |
|
3585
|
1180 retval = ComplexMatrix (*this); |
|
1948
|
1181 Complex *tmp_data = retval.fortran_vec (); |
|
|
1182 |
|
3887
|
1183 F77_FUNC (cffti, CFFTI) (npts, pwsave); |
|
677
|
1184 |
|
5275
|
1185 for (octave_idx_type j = 0; j < nsamples; j++) |
|
4153
|
1186 { |
|
|
1187 OCTAVE_QUIT; |
|
|
1188 |
|
|
1189 F77_FUNC (cfftb, CFFTB) (npts, &tmp_data[npts*j], pwsave); |
|
|
1190 } |
|
677
|
1191 |
|
5275
|
1192 for (octave_idx_type j = 0; j < npts*nsamples; j++) |
|
3572
|
1193 tmp_data[j] = tmp_data[j] / static_cast<double> (npts); |
|
677
|
1194 |
|
|
1195 npts = nc; |
|
|
1196 nsamples = nr; |
|
|
1197 nn = 4*npts+15; |
|
1948
|
1198 |
|
|
1199 wsave.resize (nn); |
|
|
1200 pwsave = wsave.fortran_vec (); |
|
|
1201 |
|
4773
|
1202 Array<Complex> tmp (npts); |
|
|
1203 Complex *prow = tmp.fortran_vec (); |
|
1948
|
1204 |
|
3887
|
1205 F77_FUNC (cffti, CFFTI) (npts, pwsave); |
|
677
|
1206 |
|
5275
|
1207 for (octave_idx_type j = 0; j < nsamples; j++) |
|
677
|
1208 { |
|
4153
|
1209 OCTAVE_QUIT; |
|
|
1210 |
|
5275
|
1211 for (octave_idx_type i = 0; i < npts; i++) |
|
1948
|
1212 prow[i] = tmp_data[i*nr + j]; |
|
|
1213 |
|
3887
|
1214 F77_FUNC (cfftb, CFFTB) (npts, prow, pwsave); |
|
677
|
1215 |
|
5275
|
1216 for (octave_idx_type i = 0; i < npts; i++) |
|
3572
|
1217 tmp_data[i*nr + j] = prow[i] / static_cast<double> (npts); |
|
677
|
1218 } |
|
|
1219 |
|
1948
|
1220 return retval; |
|
677
|
1221 } |
|
|
1222 |
|
3827
|
1223 #endif |
|
|
1224 |
|
458
|
1225 DET |
|
|
1226 Matrix::determinant (void) const |
|
|
1227 { |
|
5275
|
1228 octave_idx_type info; |
|
458
|
1229 double rcond; |
|
4329
|
1230 return determinant (info, rcond, 0); |
|
458
|
1231 } |
|
|
1232 |
|
|
1233 DET |
|
5275
|
1234 Matrix::determinant (octave_idx_type& info) const |
|
458
|
1235 { |
|
|
1236 double rcond; |
|
4329
|
1237 return determinant (info, rcond, 0); |
|
458
|
1238 } |
|
|
1239 |
|
|
1240 DET |
|
5275
|
1241 Matrix::determinant (octave_idx_type& info, double& rcond, int calc_cond) const |
|
458
|
1242 { |
|
|
1243 DET retval; |
|
|
1244 |
|
5275
|
1245 octave_idx_type nr = rows (); |
|
|
1246 octave_idx_type nc = cols (); |
|
458
|
1247 |
|
|
1248 if (nr == 0 || nc == 0) |
|
|
1249 { |
|
5634
|
1250 retval = DET (1.0, 0); |
|
458
|
1251 } |
|
|
1252 else |
|
|
1253 { |
|
5275
|
1254 Array<octave_idx_type> ipvt (nr); |
|
|
1255 octave_idx_type *pipvt = ipvt.fortran_vec (); |
|
1948
|
1256 |
|
|
1257 Matrix atmp = *this; |
|
|
1258 double *tmp_data = atmp.fortran_vec (); |
|
|
1259 |
|
4329
|
1260 info = 0; |
|
|
1261 |
|
4330
|
1262 // Calculate the norm of the matrix, for later use. |
|
4329
|
1263 double anorm = 0; |
|
|
1264 if (calc_cond) |
|
5275
|
1265 anorm = atmp.abs().sum().row(static_cast<octave_idx_type>(0)).max(); |
|
4329
|
1266 |
|
|
1267 F77_XFCN (dgetrf, DGETRF, (nr, nr, tmp_data, nr, pipvt, info)); |
|
1948
|
1268 |
|
|
1269 if (f77_exception_encountered) |
|
4329
|
1270 (*current_liboctave_error_handler) ("unrecoverable error in dgetrf"); |
|
458
|
1271 else |
|
|
1272 { |
|
4330
|
1273 // Throw-away extra info LAPACK gives so as to not change output. |
|
4509
|
1274 rcond = 0.0; |
|
|
1275 if (info != 0) |
|
1948
|
1276 { |
|
4509
|
1277 info = -1; |
|
|
1278 retval = DET (); |
|
4329
|
1279 } |
|
|
1280 else |
|
1948
|
1281 { |
|
4329
|
1282 if (calc_cond) |
|
|
1283 { |
|
4330
|
1284 // Now calc the condition number for non-singular matrix. |
|
4329
|
1285 char job = '1'; |
|
|
1286 Array<double> z (4 * nc); |
|
|
1287 double *pz = z.fortran_vec (); |
|
5275
|
1288 Array<octave_idx_type> iz (nc); |
|
|
1289 octave_idx_type *piz = iz.fortran_vec (); |
|
4329
|
1290 |
|
4552
|
1291 F77_XFCN (dgecon, DGECON, (F77_CONST_CHAR_ARG2 (&job, 1), |
|
|
1292 nc, tmp_data, nr, anorm, |
|
|
1293 rcond, pz, piz, info |
|
|
1294 F77_CHAR_ARG_LEN (1))); |
|
4329
|
1295 |
|
|
1296 if (f77_exception_encountered) |
|
|
1297 (*current_liboctave_error_handler) |
|
|
1298 ("unrecoverable error in dgecon"); |
|
|
1299 } |
|
|
1300 |
|
4509
|
1301 if (info != 0) |
|
4329
|
1302 { |
|
|
1303 info = -1; |
|
|
1304 retval = DET (); |
|
|
1305 } |
|
|
1306 else |
|
|
1307 { |
|
5634
|
1308 double c = 1.0; |
|
|
1309 int e = 0; |
|
|
1310 |
|
|
1311 for (octave_idx_type i = 0; i < nc; i++) |
|
4329
|
1312 { |
|
5634
|
1313 if (ipvt(i) != (i+1)) |
|
|
1314 c = -c; |
|
|
1315 |
|
|
1316 c *= atmp(i,i); |
|
|
1317 |
|
|
1318 if (c == 0.0) |
|
|
1319 break; |
|
|
1320 |
|
|
1321 while (fabs (c) < 0.5) |
|
4329
|
1322 { |
|
5634
|
1323 c *= 2.0; |
|
|
1324 e--; |
|
4329
|
1325 } |
|
5634
|
1326 |
|
|
1327 while (fabs (c) >= 2.0) |
|
4329
|
1328 { |
|
5634
|
1329 c /= 2.0; |
|
|
1330 e++; |
|
4329
|
1331 } |
|
|
1332 } |
|
5634
|
1333 |
|
|
1334 retval = DET (c, e); |
|
4329
|
1335 } |
|
1948
|
1336 } |
|
458
|
1337 } |
|
|
1338 } |
|
|
1339 |
|
|
1340 return retval; |
|
|
1341 } |
|
|
1342 |
|
|
1343 Matrix |
|
5785
|
1344 Matrix::utsolve (MatrixType &mattype, const Matrix& b, octave_idx_type& info, |
|
|
1345 double& rcond, solve_singularity_handler sing_handler, |
|
|
1346 bool calc_cond) const |
|
|
1347 { |
|
|
1348 Matrix retval; |
|
|
1349 |
|
|
1350 octave_idx_type nr = rows (); |
|
|
1351 octave_idx_type nc = cols (); |
|
|
1352 |
|
|
1353 if (nr == 0 || nc == 0 || nr != b.rows ()) |
|
|
1354 (*current_liboctave_error_handler) |
|
|
1355 ("matrix dimension mismatch solution of linear equations"); |
|
|
1356 else |
|
|
1357 { |
|
|
1358 volatile int typ = mattype.type (); |
|
|
1359 |
|
|
1360 if (typ == MatrixType::Permuted_Upper || |
|
|
1361 typ == MatrixType::Upper) |
|
|
1362 { |
|
|
1363 octave_idx_type b_nc = b.cols (); |
|
|
1364 rcond = 1.; |
|
|
1365 info = 0; |
|
|
1366 |
|
|
1367 if (typ == MatrixType::Permuted_Upper) |
|
|
1368 { |
|
|
1369 (*current_liboctave_error_handler) |
|
6390
|
1370 ("permuted triangular matrix not implemented"); |
|
5785
|
1371 } |
|
|
1372 else |
|
|
1373 { |
|
|
1374 const double *tmp_data = fortran_vec (); |
|
|
1375 |
|
|
1376 if (calc_cond) |
|
|
1377 { |
|
|
1378 char norm = '1'; |
|
|
1379 char uplo = 'U'; |
|
|
1380 char dia = 'N'; |
|
|
1381 |
|
|
1382 Array<double> z (3 * nc); |
|
|
1383 double *pz = z.fortran_vec (); |
|
|
1384 Array<octave_idx_type> iz (nc); |
|
|
1385 octave_idx_type *piz = iz.fortran_vec (); |
|
|
1386 |
|
|
1387 F77_XFCN (dtrcon, DTRCON, (F77_CONST_CHAR_ARG2 (&norm, 1), |
|
|
1388 F77_CONST_CHAR_ARG2 (&uplo, 1), |
|
|
1389 F77_CONST_CHAR_ARG2 (&dia, 1), |
|
|
1390 nr, tmp_data, nr, rcond, |
|
|
1391 pz, piz, info |
|
|
1392 F77_CHAR_ARG_LEN (1) |
|
|
1393 F77_CHAR_ARG_LEN (1) |
|
|
1394 F77_CHAR_ARG_LEN (1))); |
|
|
1395 |
|
|
1396 if (f77_exception_encountered) |
|
|
1397 (*current_liboctave_error_handler) |
|
|
1398 ("unrecoverable error in dtrcon"); |
|
|
1399 |
|
|
1400 if (info != 0) |
|
|
1401 info = -2; |
|
|
1402 |
|
|
1403 volatile double rcond_plus_one = rcond + 1.0; |
|
|
1404 |
|
|
1405 if (rcond_plus_one == 1.0 || xisnan (rcond)) |
|
|
1406 { |
|
|
1407 info = -2; |
|
|
1408 |
|
|
1409 if (sing_handler) |
|
|
1410 sing_handler (rcond); |
|
|
1411 else |
|
|
1412 (*current_liboctave_error_handler) |
|
|
1413 ("matrix singular to machine precision, rcond = %g", |
|
|
1414 rcond); |
|
|
1415 } |
|
|
1416 } |
|
|
1417 |
|
|
1418 if (info == 0) |
|
|
1419 { |
|
|
1420 retval = b; |
|
|
1421 double *result = retval.fortran_vec (); |
|
|
1422 |
|
|
1423 char uplo = 'U'; |
|
|
1424 char trans = 'N'; |
|
|
1425 char dia = 'N'; |
|
|
1426 |
|
|
1427 F77_XFCN (dtrtrs, DTRTRS, (F77_CONST_CHAR_ARG2 (&uplo, 1), |
|
|
1428 F77_CONST_CHAR_ARG2 (&trans, 1), |
|
|
1429 F77_CONST_CHAR_ARG2 (&dia, 1), |
|
|
1430 nr, b_nc, tmp_data, nr, |
|
|
1431 result, nr, info |
|
|
1432 F77_CHAR_ARG_LEN (1) |
|
|
1433 F77_CHAR_ARG_LEN (1) |
|
|
1434 F77_CHAR_ARG_LEN (1))); |
|
|
1435 |
|
|
1436 if (f77_exception_encountered) |
|
|
1437 (*current_liboctave_error_handler) |
|
|
1438 ("unrecoverable error in dtrtrs"); |
|
|
1439 } |
|
|
1440 } |
|
|
1441 } |
|
|
1442 else |
|
|
1443 (*current_liboctave_error_handler) ("incorrect matrix type"); |
|
|
1444 } |
|
|
1445 |
|
|
1446 return retval; |
|
|
1447 } |
|
|
1448 |
|
|
1449 Matrix |
|
|
1450 Matrix::ltsolve (MatrixType &mattype, const Matrix& b, octave_idx_type& info, |
|
|
1451 double& rcond, solve_singularity_handler sing_handler, |
|
|
1452 bool calc_cond) const |
|
|
1453 { |
|
|
1454 Matrix retval; |
|
|
1455 |
|
|
1456 octave_idx_type nr = rows (); |
|
|
1457 octave_idx_type nc = cols (); |
|
|
1458 |
|
|
1459 if (nr == 0 || nc == 0 || nr != b.rows ()) |
|
|
1460 (*current_liboctave_error_handler) |
|
|
1461 ("matrix dimension mismatch solution of linear equations"); |
|
|
1462 else |
|
|
1463 { |
|
|
1464 volatile int typ = mattype.type (); |
|
|
1465 |
|
|
1466 if (typ == MatrixType::Permuted_Lower || |
|
|
1467 typ == MatrixType::Lower) |
|
|
1468 { |
|
|
1469 octave_idx_type b_nc = b.cols (); |
|
|
1470 rcond = 1.; |
|
|
1471 info = 0; |
|
|
1472 |
|
|
1473 if (typ == MatrixType::Permuted_Lower) |
|
|
1474 { |
|
|
1475 (*current_liboctave_error_handler) |
|
6390
|
1476 ("permuted triangular matrix not implemented"); |
|
5785
|
1477 } |
|
|
1478 else |
|
|
1479 { |
|
|
1480 const double *tmp_data = fortran_vec (); |
|
|
1481 |
|
|
1482 if (calc_cond) |
|
|
1483 { |
|
|
1484 char norm = '1'; |
|
|
1485 char uplo = 'L'; |
|
|
1486 char dia = 'N'; |
|
|
1487 |
|
|
1488 Array<double> z (3 * nc); |
|
|
1489 double *pz = z.fortran_vec (); |
|
|
1490 Array<octave_idx_type> iz (nc); |
|
|
1491 octave_idx_type *piz = iz.fortran_vec (); |
|
|
1492 |
|
|
1493 F77_XFCN (dtrcon, DTRCON, (F77_CONST_CHAR_ARG2 (&norm, 1), |
|
|
1494 F77_CONST_CHAR_ARG2 (&uplo, 1), |
|
|
1495 F77_CONST_CHAR_ARG2 (&dia, 1), |
|
|
1496 nr, tmp_data, nr, rcond, |
|
|
1497 pz, piz, info |
|
|
1498 F77_CHAR_ARG_LEN (1) |
|
|
1499 F77_CHAR_ARG_LEN (1) |
|
|
1500 F77_CHAR_ARG_LEN (1))); |
|
|
1501 |
|
|
1502 if (f77_exception_encountered) |
|
|
1503 (*current_liboctave_error_handler) |
|
|
1504 ("unrecoverable error in dtrcon"); |
|
|
1505 |
|
|
1506 if (info != 0) |
|
|
1507 info = -2; |
|
|
1508 |
|
|
1509 volatile double rcond_plus_one = rcond + 1.0; |
|
|
1510 |
|
|
1511 if (rcond_plus_one == 1.0 || xisnan (rcond)) |
|
|
1512 { |
|
|
1513 info = -2; |
|
|
1514 |
|
|
1515 if (sing_handler) |
|
|
1516 sing_handler (rcond); |
|
|
1517 else |
|
|
1518 (*current_liboctave_error_handler) |
|
|
1519 ("matrix singular to machine precision, rcond = %g", |
|
|
1520 rcond); |
|
|
1521 } |
|
|
1522 } |
|
|
1523 |
|
|
1524 if (info == 0) |
|
|
1525 { |
|
|
1526 retval = b; |
|
|
1527 double *result = retval.fortran_vec (); |
|
|
1528 |
|
|
1529 char uplo = 'L'; |
|
|
1530 char trans = 'N'; |
|
|
1531 char dia = 'N'; |
|
|
1532 |
|
|
1533 F77_XFCN (dtrtrs, DTRTRS, (F77_CONST_CHAR_ARG2 (&uplo, 1), |
|
|
1534 F77_CONST_CHAR_ARG2 (&trans, 1), |
|
|
1535 F77_CONST_CHAR_ARG2 (&dia, 1), |
|
|
1536 nr, b_nc, tmp_data, nr, |
|
|
1537 result, nr, info |
|
|
1538 F77_CHAR_ARG_LEN (1) |
|
|
1539 F77_CHAR_ARG_LEN (1) |
|
|
1540 F77_CHAR_ARG_LEN (1))); |
|
|
1541 |
|
|
1542 if (f77_exception_encountered) |
|
|
1543 (*current_liboctave_error_handler) |
|
|
1544 ("unrecoverable error in dtrtrs"); |
|
|
1545 } |
|
|
1546 } |
|
|
1547 } |
|
|
1548 else |
|
|
1549 (*current_liboctave_error_handler) ("incorrect matrix type"); |
|
|
1550 } |
|
|
1551 |
|
|
1552 return retval; |
|
|
1553 } |
|
|
1554 |
|
|
1555 Matrix |
|
|
1556 Matrix::fsolve (MatrixType &mattype, const Matrix& b, octave_idx_type& info, |
|
|
1557 double& rcond, solve_singularity_handler sing_handler, |
|
|
1558 bool calc_cond) const |
|
|
1559 { |
|
|
1560 Matrix retval; |
|
|
1561 |
|
|
1562 octave_idx_type nr = rows (); |
|
|
1563 octave_idx_type nc = cols (); |
|
|
1564 |
|
|
1565 if (nr == 0 || nc == 0 || nr != nc || nr != b.rows ()) |
|
|
1566 (*current_liboctave_error_handler) |
|
|
1567 ("matrix dimension mismatch solution of linear equations"); |
|
|
1568 else |
|
|
1569 { |
|
|
1570 volatile int typ = mattype.type (); |
|
|
1571 |
|
|
1572 // Calculate the norm of the matrix, for later use. |
|
|
1573 double anorm = -1.; |
|
|
1574 |
|
|
1575 if (typ == MatrixType::Hermitian) |
|
|
1576 { |
|
|
1577 info = 0; |
|
|
1578 char job = 'L'; |
|
|
1579 Matrix atmp = *this; |
|
|
1580 double *tmp_data = atmp.fortran_vec (); |
|
|
1581 anorm = atmp.abs().sum().row(static_cast<octave_idx_type>(0)).max(); |
|
|
1582 |
|
|
1583 F77_XFCN (dpotrf, DPOTRF, (F77_CONST_CHAR_ARG2 (&job, 1), nr, |
|
|
1584 tmp_data, nr, info |
|
|
1585 F77_CHAR_ARG_LEN (1))); |
|
|
1586 |
|
|
1587 if (f77_exception_encountered) |
|
|
1588 (*current_liboctave_error_handler) |
|
|
1589 ("unrecoverable error in dpotrf"); |
|
|
1590 else |
|
|
1591 { |
|
|
1592 // Throw-away extra info LAPACK gives so as to not change output. |
|
|
1593 rcond = 0.0; |
|
|
1594 if (info != 0) |
|
|
1595 { |
|
|
1596 info = -2; |
|
|
1597 |
|
|
1598 mattype.mark_as_unsymmetric (); |
|
|
1599 typ = MatrixType::Full; |
|
|
1600 } |
|
|
1601 else |
|
|
1602 { |
|
|
1603 if (calc_cond) |
|
|
1604 { |
|
|
1605 Array<double> z (3 * nc); |
|
|
1606 double *pz = z.fortran_vec (); |
|
|
1607 Array<octave_idx_type> iz (nc); |
|
|
1608 octave_idx_type *piz = iz.fortran_vec (); |
|
|
1609 |
|
|
1610 F77_XFCN (dpocon, DPOCON, (F77_CONST_CHAR_ARG2 (&job, 1), |
|
|
1611 nr, tmp_data, nr, anorm, |
|
|
1612 rcond, pz, piz, info |
|
|
1613 F77_CHAR_ARG_LEN (1))); |
|
|
1614 |
|
|
1615 if (f77_exception_encountered) |
|
|
1616 (*current_liboctave_error_handler) |
|
|
1617 ("unrecoverable error in dpocon"); |
|
|
1618 |
|
|
1619 if (info != 0) |
|
|
1620 info = -2; |
|
|
1621 |
|
|
1622 volatile double rcond_plus_one = rcond + 1.0; |
|
|
1623 |
|
|
1624 if (rcond_plus_one == 1.0 || xisnan (rcond)) |
|
|
1625 { |
|
|
1626 info = -2; |
|
|
1627 |
|
|
1628 if (sing_handler) |
|
|
1629 sing_handler (rcond); |
|
|
1630 else |
|
|
1631 (*current_liboctave_error_handler) |
|
|
1632 ("matrix singular to machine precision, rcond = %g", |
|
|
1633 rcond); |
|
|
1634 } |
|
|
1635 } |
|
|
1636 |
|
|
1637 if (info == 0) |
|
|
1638 { |
|
|
1639 retval = b; |
|
|
1640 double *result = retval.fortran_vec (); |
|
|
1641 |
|
|
1642 octave_idx_type b_nc = b.cols (); |
|
|
1643 |
|
|
1644 F77_XFCN (dpotrs, DPOTRS, (F77_CONST_CHAR_ARG2 (&job, 1), |
|
|
1645 nr, b_nc, tmp_data, nr, |
|
|
1646 result, b.rows(), info |
|
|
1647 F77_CHAR_ARG_LEN (1))); |
|
|
1648 |
|
|
1649 if (f77_exception_encountered) |
|
|
1650 (*current_liboctave_error_handler) |
|
|
1651 ("unrecoverable error in dpotrs"); |
|
|
1652 } |
|
|
1653 else |
|
|
1654 { |
|
|
1655 mattype.mark_as_unsymmetric (); |
|
|
1656 typ = MatrixType::Full; |
|
|
1657 } |
|
|
1658 } |
|
|
1659 } |
|
|
1660 } |
|
|
1661 |
|
|
1662 if (typ == MatrixType::Full) |
|
|
1663 { |
|
|
1664 info = 0; |
|
|
1665 |
|
|
1666 Array<octave_idx_type> ipvt (nr); |
|
|
1667 octave_idx_type *pipvt = ipvt.fortran_vec (); |
|
|
1668 |
|
|
1669 Matrix atmp = *this; |
|
|
1670 double *tmp_data = atmp.fortran_vec (); |
|
|
1671 if(anorm < 0.) |
|
|
1672 anorm = atmp.abs().sum().row(static_cast<octave_idx_type>(0)).max(); |
|
|
1673 |
|
|
1674 Array<double> z (4 * nc); |
|
|
1675 double *pz = z.fortran_vec (); |
|
|
1676 Array<octave_idx_type> iz (nc); |
|
|
1677 octave_idx_type *piz = iz.fortran_vec (); |
|
|
1678 |
|
|
1679 F77_XFCN (dgetrf, DGETRF, (nr, nr, tmp_data, nr, pipvt, info)); |
|
|
1680 |
|
|
1681 if (f77_exception_encountered) |
|
|
1682 (*current_liboctave_error_handler) |
|
|
1683 ("unrecoverable error in dgetrf"); |
|
|
1684 else |
|
|
1685 { |
|
|
1686 // Throw-away extra info LAPACK gives so as to not change output. |
|
|
1687 rcond = 0.0; |
|
|
1688 if (info != 0) |
|
|
1689 { |
|
|
1690 info = -2; |
|
|
1691 |
|
|
1692 if (sing_handler) |
|
|
1693 sing_handler (rcond); |
|
|
1694 else |
|
|
1695 (*current_liboctave_error_handler) |
|
|
1696 ("matrix singular to machine precision"); |
|
|
1697 |
|
|
1698 mattype.mark_as_rectangular (); |
|
|
1699 } |
|
|
1700 else |
|
|
1701 { |
|
|
1702 if (calc_cond) |
|
|
1703 { |
|
|
1704 // Now calculate the condition number for |
|
|
1705 // non-singular matrix. |
|
|
1706 char job = '1'; |
|
|
1707 F77_XFCN (dgecon, DGECON, (F77_CONST_CHAR_ARG2 (&job, 1), |
|
|
1708 nc, tmp_data, nr, anorm, |
|
|
1709 rcond, pz, piz, info |
|
|
1710 F77_CHAR_ARG_LEN (1))); |
|
|
1711 |
|
|
1712 if (f77_exception_encountered) |
|
|
1713 (*current_liboctave_error_handler) |
|
|
1714 ("unrecoverable error in dgecon"); |
|
|
1715 |
|
|
1716 if (info != 0) |
|
|
1717 info = -2; |
|
|
1718 |
|
|
1719 volatile double rcond_plus_one = rcond + 1.0; |
|
|
1720 |
|
|
1721 if (rcond_plus_one == 1.0 || xisnan (rcond)) |
|
|
1722 { |
|
|
1723 info = -2; |
|
|
1724 |
|
|
1725 if (sing_handler) |
|
|
1726 sing_handler (rcond); |
|
|
1727 else |
|
|
1728 (*current_liboctave_error_handler) |
|
|
1729 ("matrix singular to machine precision, rcond = %g", |
|
|
1730 rcond); |
|
|
1731 } |
|
|
1732 } |
|
|
1733 |
|
|
1734 if (info == 0) |
|
|
1735 { |
|
|
1736 retval = b; |
|
|
1737 double *result = retval.fortran_vec (); |
|
|
1738 |
|
|
1739 octave_idx_type b_nc = b.cols (); |
|
|
1740 |
|
|
1741 char job = 'N'; |
|
|
1742 F77_XFCN (dgetrs, DGETRS, (F77_CONST_CHAR_ARG2 (&job, 1), |
|
|
1743 nr, b_nc, tmp_data, nr, |
|
|
1744 pipvt, result, b.rows(), info |
|
|
1745 F77_CHAR_ARG_LEN (1))); |
|
|
1746 |
|
|
1747 if (f77_exception_encountered) |
|
|
1748 (*current_liboctave_error_handler) |
|
|
1749 ("unrecoverable error in dgetrs"); |
|
|
1750 } |
|
|
1751 else |
|
|
1752 mattype.mark_as_rectangular (); |
|
|
1753 } |
|
|
1754 } |
|
|
1755 } |
|
|
1756 else if (typ != MatrixType::Hermitian) |
|
|
1757 (*current_liboctave_error_handler) ("incorrect matrix type"); |
|
|
1758 } |
|
|
1759 |
|
|
1760 return retval; |
|
|
1761 } |
|
|
1762 |
|
|
1763 Matrix |
|
|
1764 Matrix::solve (MatrixType &typ, const Matrix& b) const |
|
|
1765 { |
|
|
1766 octave_idx_type info; |
|
|
1767 double rcond; |
|
|
1768 return solve (typ, b, info, rcond, 0); |
|
|
1769 } |
|
|
1770 |
|
|
1771 Matrix |
|
|
1772 Matrix::solve (MatrixType &typ, const Matrix& b, octave_idx_type& info, |
|
|
1773 double& rcond) const |
|
|
1774 { |
|
|
1775 return solve (typ, b, info, rcond, 0); |
|
|
1776 } |
|
|
1777 |
|
|
1778 Matrix |
|
|
1779 Matrix::solve (MatrixType &mattype, const Matrix& b, octave_idx_type& info, |
|
|
1780 double& rcond, solve_singularity_handler sing_handler, |
|
|
1781 bool singular_fallback) const |
|
|
1782 { |
|
|
1783 Matrix retval; |
|
|
1784 int typ = mattype.type (); |
|
|
1785 |
|
|
1786 if (typ == MatrixType::Unknown) |
|
|
1787 typ = mattype.type (*this); |
|
|
1788 |
|
|
1789 // Only calculate the condition number for LU/Cholesky |
|
|
1790 if (typ == MatrixType::Upper || typ == MatrixType::Permuted_Upper) |
|
|
1791 retval = utsolve (mattype, b, info, rcond, sing_handler, false); |
|
|
1792 else if (typ == MatrixType::Lower || typ == MatrixType::Permuted_Lower) |
|
|
1793 retval = ltsolve (mattype, b, info, rcond, sing_handler, false); |
|
|
1794 else if (typ == MatrixType::Full || typ == MatrixType::Hermitian) |
|
|
1795 retval = fsolve (mattype, b, info, rcond, sing_handler, true); |
|
|
1796 else if (typ != MatrixType::Rectangular) |
|
|
1797 { |
|
|
1798 (*current_liboctave_error_handler) ("unknown matrix type"); |
|
|
1799 return Matrix (); |
|
|
1800 } |
|
|
1801 |
|
|
1802 // Rectangular or one of the above solvers flags a singular matrix |
|
|
1803 if (singular_fallback && mattype.type () == MatrixType::Rectangular) |
|
|
1804 { |
|
|
1805 octave_idx_type rank; |
|
|
1806 retval = lssolve (b, info, rank); |
|
|
1807 } |
|
|
1808 |
|
|
1809 return retval; |
|
|
1810 } |
|
|
1811 |
|
|
1812 ComplexMatrix |
|
|
1813 Matrix::solve (MatrixType &typ, const ComplexMatrix& b) const |
|
|
1814 { |
|
|
1815 ComplexMatrix tmp (*this); |
|
|
1816 return tmp.solve (typ, b); |
|
|
1817 } |
|
|
1818 |
|
|
1819 ComplexMatrix |
|
|
1820 Matrix::solve (MatrixType &typ, const ComplexMatrix& b, |
|
|
1821 octave_idx_type& info) const |
|
|
1822 { |
|
|
1823 ComplexMatrix tmp (*this); |
|
|
1824 return tmp.solve (typ, b, info); |
|
|
1825 } |
|
|
1826 |
|
|
1827 ComplexMatrix |
|
|
1828 Matrix::solve (MatrixType &typ, const ComplexMatrix& b, octave_idx_type& info, |
|
|
1829 double& rcond) const |
|
|
1830 { |
|
|
1831 ComplexMatrix tmp (*this); |
|
|
1832 return tmp.solve (typ, b, info, rcond); |
|
|
1833 } |
|
|
1834 |
|
|
1835 ComplexMatrix |
|
|
1836 Matrix::solve (MatrixType &typ, const ComplexMatrix& b, octave_idx_type& info, |
|
|
1837 double& rcond, solve_singularity_handler sing_handler, |
|
|
1838 bool singular_fallback) const |
|
|
1839 { |
|
|
1840 ComplexMatrix tmp (*this); |
|
|
1841 return tmp.solve (typ, b, info, rcond, sing_handler, singular_fallback); |
|
|
1842 } |
|
|
1843 |
|
|
1844 ColumnVector |
|
|
1845 Matrix::solve (MatrixType &typ, const ColumnVector& b) const |
|
|
1846 { |
|
|
1847 octave_idx_type info; double rcond; |
|
|
1848 return solve (typ, b, info, rcond); |
|
|
1849 } |
|
|
1850 |
|
|
1851 ColumnVector |
|
|
1852 Matrix::solve (MatrixType &typ, const ColumnVector& b, |
|
|
1853 octave_idx_type& info) const |
|
|
1854 { |
|
|
1855 double rcond; |
|
|
1856 return solve (typ, b, info, rcond); |
|
|
1857 } |
|
|
1858 |
|
|
1859 ColumnVector |
|
|
1860 Matrix::solve (MatrixType &typ, const ColumnVector& b, octave_idx_type& info, |
|
|
1861 double& rcond) const |
|
|
1862 { |
|
|
1863 return solve (typ, b, info, rcond, 0); |
|
|
1864 } |
|
|
1865 |
|
|
1866 ColumnVector |
|
|
1867 Matrix::solve (MatrixType &typ, const ColumnVector& b, octave_idx_type& info, |
|
|
1868 double& rcond, solve_singularity_handler sing_handler) const |
|
|
1869 { |
|
|
1870 Matrix tmp (b); |
|
|
1871 return solve (typ, tmp, info, rcond, sing_handler).column(static_cast<octave_idx_type> (0)); |
|
|
1872 } |
|
|
1873 |
|
|
1874 ComplexColumnVector |
|
|
1875 Matrix::solve (MatrixType &typ, const ComplexColumnVector& b) const |
|
|
1876 { |
|
|
1877 ComplexMatrix tmp (*this); |
|
|
1878 return tmp.solve (typ, b); |
|
|
1879 } |
|
|
1880 |
|
|
1881 ComplexColumnVector |
|
|
1882 Matrix::solve (MatrixType &typ, const ComplexColumnVector& b, |
|
|
1883 octave_idx_type& info) const |
|
|
1884 { |
|
|
1885 ComplexMatrix tmp (*this); |
|
|
1886 return tmp.solve (typ, b, info); |
|
|
1887 } |
|
|
1888 |
|
|
1889 ComplexColumnVector |
|
|
1890 Matrix::solve (MatrixType &typ, const ComplexColumnVector& b, |
|
|
1891 octave_idx_type& info, double& rcond) const |
|
|
1892 { |
|
|
1893 ComplexMatrix tmp (*this); |
|
|
1894 return tmp.solve (typ, b, info, rcond); |
|
|
1895 } |
|
|
1896 |
|
|
1897 ComplexColumnVector |
|
|
1898 Matrix::solve (MatrixType &typ, const ComplexColumnVector& b, |
|
|
1899 octave_idx_type& info, double& rcond, |
|
|
1900 solve_singularity_handler sing_handler) const |
|
|
1901 { |
|
|
1902 ComplexMatrix tmp (*this); |
|
|
1903 return tmp.solve(typ, b, info, rcond, sing_handler); |
|
|
1904 } |
|
|
1905 |
|
|
1906 Matrix |
|
458
|
1907 Matrix::solve (const Matrix& b) const |
|
|
1908 { |
|
5275
|
1909 octave_idx_type info; |
|
458
|
1910 double rcond; |
|
4329
|
1911 return solve (b, info, rcond, 0); |
|
458
|
1912 } |
|
|
1913 |
|
|
1914 Matrix |
|
5275
|
1915 Matrix::solve (const Matrix& b, octave_idx_type& info) const |
|
458
|
1916 { |
|
|
1917 double rcond; |
|
4329
|
1918 return solve (b, info, rcond, 0); |
|
458
|
1919 } |
|
|
1920 |
|
|
1921 Matrix |
|
5275
|
1922 Matrix::solve (const Matrix& b, octave_idx_type& info, double& rcond) const |
|
458
|
1923 { |
|
3480
|
1924 return solve (b, info, rcond, 0); |
|
|
1925 } |
|
|
1926 |
|
|
1927 Matrix |
|
5785
|
1928 Matrix::solve (const Matrix& b, octave_idx_type& info, |
|
|
1929 double& rcond, solve_singularity_handler sing_handler) const |
|
3480
|
1930 { |
|
5785
|
1931 MatrixType mattype (*this); |
|
|
1932 return solve (mattype, b, info, rcond, sing_handler); |
|
458
|
1933 } |
|
|
1934 |
|
|
1935 ComplexMatrix |
|
|
1936 Matrix::solve (const ComplexMatrix& b) const |
|
|
1937 { |
|
|
1938 ComplexMatrix tmp (*this); |
|
|
1939 return tmp.solve (b); |
|
|
1940 } |
|
|
1941 |
|
|
1942 ComplexMatrix |
|
5275
|
1943 Matrix::solve (const ComplexMatrix& b, octave_idx_type& info) const |
|
458
|
1944 { |
|
|
1945 ComplexMatrix tmp (*this); |
|
|
1946 return tmp.solve (b, info); |
|
|
1947 } |
|
|
1948 |
|
|
1949 ComplexMatrix |
|
5275
|
1950 Matrix::solve (const ComplexMatrix& b, octave_idx_type& info, double& rcond) const |
|
458
|
1951 { |
|
|
1952 ComplexMatrix tmp (*this); |
|
|
1953 return tmp.solve (b, info, rcond); |
|
|
1954 } |
|
|
1955 |
|
3480
|
1956 ComplexMatrix |
|
5275
|
1957 Matrix::solve (const ComplexMatrix& b, octave_idx_type& info, double& rcond, |
|
3480
|
1958 solve_singularity_handler sing_handler) const |
|
|
1959 { |
|
|
1960 ComplexMatrix tmp (*this); |
|
|
1961 return tmp.solve (b, info, rcond, sing_handler); |
|
|
1962 } |
|
|
1963 |
|
458
|
1964 ColumnVector |
|
|
1965 Matrix::solve (const ColumnVector& b) const |
|
|
1966 { |
|
5275
|
1967 octave_idx_type info; double rcond; |
|
458
|
1968 return solve (b, info, rcond); |
|
|
1969 } |
|
|
1970 |
|
|
1971 ColumnVector |
|
5275
|
1972 Matrix::solve (const ColumnVector& b, octave_idx_type& info) const |
|
458
|
1973 { |
|
|
1974 double rcond; |
|
|
1975 return solve (b, info, rcond); |
|
|
1976 } |
|
|
1977 |
|
|
1978 ColumnVector |
|
5275
|
1979 Matrix::solve (const ColumnVector& b, octave_idx_type& info, double& rcond) const |
|
458
|
1980 { |
|
3480
|
1981 return solve (b, info, rcond, 0); |
|
|
1982 } |
|
|
1983 |
|
|
1984 ColumnVector |
|
5275
|
1985 Matrix::solve (const ColumnVector& b, octave_idx_type& info, double& rcond, |
|
3480
|
1986 solve_singularity_handler sing_handler) const |
|
|
1987 { |
|
5785
|
1988 MatrixType mattype (*this); |
|
|
1989 return solve (mattype, b, info, rcond, sing_handler); |
|
458
|
1990 } |
|
|
1991 |
|
|
1992 ComplexColumnVector |
|
|
1993 Matrix::solve (const ComplexColumnVector& b) const |
|
|
1994 { |
|
|
1995 ComplexMatrix tmp (*this); |
|
|
1996 return tmp.solve (b); |
|
|
1997 } |
|
|
1998 |
|
|
1999 ComplexColumnVector |
|
5275
|
2000 Matrix::solve (const ComplexColumnVector& b, octave_idx_type& info) const |
|
458
|
2001 { |
|
|
2002 ComplexMatrix tmp (*this); |
|
|
2003 return tmp.solve (b, info); |
|
|
2004 } |
|
|
2005 |
|
|
2006 ComplexColumnVector |
|
5275
|
2007 Matrix::solve (const ComplexColumnVector& b, octave_idx_type& info, double& rcond) const |
|
458
|
2008 { |
|
|
2009 ComplexMatrix tmp (*this); |
|
|
2010 return tmp.solve (b, info, rcond); |
|
|
2011 } |
|
|
2012 |
|
3480
|
2013 ComplexColumnVector |
|
5275
|
2014 Matrix::solve (const ComplexColumnVector& b, octave_idx_type& info, double& rcond, |
|
3480
|
2015 solve_singularity_handler sing_handler) const |
|
|
2016 { |
|
|
2017 ComplexMatrix tmp (*this); |
|
|
2018 return tmp.solve (b, info, rcond, sing_handler); |
|
|
2019 } |
|
|
2020 |
|
458
|
2021 Matrix |
|
|
2022 Matrix::lssolve (const Matrix& b) const |
|
|
2023 { |
|
5275
|
2024 octave_idx_type info; |
|
|
2025 octave_idx_type rank; |
|
458
|
2026 return lssolve (b, info, rank); |
|
|
2027 } |
|
|
2028 |
|
|
2029 Matrix |
|
5275
|
2030 Matrix::lssolve (const Matrix& b, octave_idx_type& info) const |
|
458
|
2031 { |
|
5275
|
2032 octave_idx_type rank; |
|
458
|
2033 return lssolve (b, info, rank); |
|
|
2034 } |
|
|
2035 |
|
|
2036 Matrix |
|
5275
|
2037 Matrix::lssolve (const Matrix& b, octave_idx_type& info, octave_idx_type& rank) const |
|
458
|
2038 { |
|
1948
|
2039 Matrix retval; |
|
|
2040 |
|
5275
|
2041 octave_idx_type nrhs = b.cols (); |
|
|
2042 |
|
|
2043 octave_idx_type m = rows (); |
|
|
2044 octave_idx_type n = cols (); |
|
458
|
2045 |
|
|
2046 if (m == 0 || n == 0 || m != b.rows ()) |
|
1948
|
2047 (*current_liboctave_error_handler) |
|
|
2048 ("matrix dimension mismatch in solution of least squares problem"); |
|
|
2049 else |
|
458
|
2050 { |
|
1948
|
2051 Matrix atmp = *this; |
|
|
2052 double *tmp_data = atmp.fortran_vec (); |
|
|
2053 |
|
5275
|
2054 octave_idx_type nrr = m > n ? m : n; |
|
3754
|
2055 Matrix result (nrr, nrhs, 0.0); |
|
1948
|
2056 |
|
5275
|
2057 for (octave_idx_type j = 0; j < nrhs; j++) |
|
|
2058 for (octave_idx_type i = 0; i < m; i++) |
|
1948
|
2059 result.elem (i, j) = b.elem (i, j); |
|
|
2060 |
|
|
2061 double *presult = result.fortran_vec (); |
|
|
2062 |
|
5275
|
2063 octave_idx_type len_s = m < n ? m : n; |
|
1948
|
2064 Array<double> s (len_s); |
|
|
2065 double *ps = s.fortran_vec (); |
|
|
2066 |
|
|
2067 double rcond = -1.0; |
|
|
2068 |
|
3752
|
2069 // Ask DGELSS what the dimension of WORK should be. |
|
|
2070 |
|
5275
|
2071 octave_idx_type lwork = -1; |
|
3752
|
2072 |
|
|
2073 Array<double> work (1); |
|
1948
|
2074 |
|
|
2075 F77_XFCN (dgelss, DGELSS, (m, n, nrhs, tmp_data, m, presult, nrr, ps, |
|
3752
|
2076 rcond, rank, work.fortran_vec (), |
|
|
2077 lwork, info)); |
|
1948
|
2078 |
|
|
2079 if (f77_exception_encountered) |
|
|
2080 (*current_liboctave_error_handler) ("unrecoverable error in dgelss"); |
|
|
2081 else |
|
|
2082 { |
|
5275
|
2083 lwork = static_cast<octave_idx_type> (work(0)); |
|
3752
|
2084 work.resize (lwork); |
|
|
2085 |
|
|
2086 F77_XFCN (dgelss, DGELSS, (m, n, nrhs, tmp_data, m, presult, |
|
|
2087 nrr, ps, rcond, rank, |
|
|
2088 work.fortran_vec (), lwork, info)); |
|
|
2089 |
|
|
2090 if (f77_exception_encountered) |
|
|
2091 (*current_liboctave_error_handler) |
|
|
2092 ("unrecoverable error in dgelss"); |
|
|
2093 else |
|
|
2094 { |
|
|
2095 retval.resize (n, nrhs); |
|
5275
|
2096 for (octave_idx_type j = 0; j < nrhs; j++) |
|
|
2097 for (octave_idx_type i = 0; i < n; i++) |
|
3752
|
2098 retval.elem (i, j) = result.elem (i, j); |
|
|
2099 } |
|
1948
|
2100 } |
|
458
|
2101 } |
|
|
2102 |
|
|
2103 return retval; |
|
|
2104 } |
|
|
2105 |
|
|
2106 ComplexMatrix |
|
|
2107 Matrix::lssolve (const ComplexMatrix& b) const |
|
|
2108 { |
|
|
2109 ComplexMatrix tmp (*this); |
|
5275
|
2110 octave_idx_type info; |
|
|
2111 octave_idx_type rank; |
|
1484
|
2112 return tmp.lssolve (b, info, rank); |
|
458
|
2113 } |
|
|
2114 |
|
|
2115 ComplexMatrix |
|
5275
|
2116 Matrix::lssolve (const ComplexMatrix& b, octave_idx_type& info) const |
|
458
|
2117 { |
|
|
2118 ComplexMatrix tmp (*this); |
|
5275
|
2119 octave_idx_type rank; |
|
1484
|
2120 return tmp.lssolve (b, info, rank); |
|
458
|
2121 } |
|
|
2122 |
|
|
2123 ComplexMatrix |
|
5275
|
2124 Matrix::lssolve (const ComplexMatrix& b, octave_idx_type& info, octave_idx_type& rank) const |
|
458
|
2125 { |
|
|
2126 ComplexMatrix tmp (*this); |
|
1484
|
2127 return tmp.lssolve (b, info, rank); |
|
458
|
2128 } |
|
|
2129 |
|
|
2130 ColumnVector |
|
|
2131 Matrix::lssolve (const ColumnVector& b) const |
|
|
2132 { |
|
5275
|
2133 octave_idx_type info; |
|
|
2134 octave_idx_type rank; |
|
1484
|
2135 return lssolve (b, info, rank); |
|
458
|
2136 } |
|
|
2137 |
|
|
2138 ColumnVector |
|
5275
|
2139 Matrix::lssolve (const ColumnVector& b, octave_idx_type& info) const |
|
458
|
2140 { |
|
5275
|
2141 octave_idx_type rank; |
|
458
|
2142 return lssolve (b, info, rank); |
|
|
2143 } |
|
|
2144 |
|
|
2145 ColumnVector |
|
5275
|
2146 Matrix::lssolve (const ColumnVector& b, octave_idx_type& info, octave_idx_type& rank) const |
|
458
|
2147 { |
|
1948
|
2148 ColumnVector retval; |
|
|
2149 |
|
5275
|
2150 octave_idx_type nrhs = 1; |
|
|
2151 |
|
|
2152 octave_idx_type m = rows (); |
|
|
2153 octave_idx_type n = cols (); |
|
458
|
2154 |
|
|
2155 if (m == 0 || n == 0 || m != b.length ()) |
|
1948
|
2156 (*current_liboctave_error_handler) |
|
|
2157 ("matrix dimension mismatch in solution of least squares problem"); |
|
|
2158 else |
|
458
|
2159 { |
|
1948
|
2160 Matrix atmp = *this; |
|
|
2161 double *tmp_data = atmp.fortran_vec (); |
|
|
2162 |
|
5275
|
2163 octave_idx_type nrr = m > n ? m : n; |
|
1948
|
2164 ColumnVector result (nrr); |
|
|
2165 |
|
5275
|
2166 for (octave_idx_type i = 0; i < m; i++) |
|
1948
|
2167 result.elem (i) = b.elem (i); |
|
|
2168 |
|
|
2169 double *presult = result.fortran_vec (); |
|
|
2170 |
|
5275
|
2171 octave_idx_type len_s = m < n ? m : n; |
|
1948
|
2172 Array<double> s (len_s); |
|
|
2173 double *ps = s.fortran_vec (); |
|
|
2174 |
|
|
2175 double rcond = -1.0; |
|
|
2176 |
|
3752
|
2177 // Ask DGELSS what the dimension of WORK should be. |
|
|
2178 |
|
5275
|
2179 octave_idx_type lwork = -1; |
|
3752
|
2180 |
|
|
2181 Array<double> work (1); |
|
|
2182 |
|
|
2183 F77_XFCN (dgelss, DGELSS, (m, n, nrhs, tmp_data, m, presult, nrr, ps, |
|
|
2184 rcond, rank, work.fortran_vec (), |
|
|
2185 lwork, info)); |
|
1948
|
2186 |
|
|
2187 if (f77_exception_encountered) |
|
|
2188 (*current_liboctave_error_handler) ("unrecoverable error in dgelss"); |
|
|
2189 else |
|
|
2190 { |
|
5275
|
2191 lwork = static_cast<octave_idx_type> (work(0)); |
|
3752
|
2192 work.resize (lwork); |
|
|
2193 |
|
|
2194 F77_XFCN (dgelss, DGELSS, (m, n, nrhs, tmp_data, m, presult, |
|
|
2195 nrr, ps, rcond, rank, |
|
|
2196 work.fortran_vec (), lwork, info)); |
|
|
2197 |
|
|
2198 if (f77_exception_encountered) |
|
|
2199 (*current_liboctave_error_handler) |
|
|
2200 ("unrecoverable error in dgelss"); |
|
|
2201 else |
|
|
2202 { |
|
|
2203 retval.resize (n); |
|
5275
|
2204 for (octave_idx_type i = 0; i < n; i++) |
|
3752
|
2205 retval.elem (i) = result.elem (i); |
|
|
2206 } |
|
1948
|
2207 } |
|
458
|
2208 } |
|
|
2209 |
|
|
2210 return retval; |
|
|
2211 } |
|
|
2212 |
|
|
2213 ComplexColumnVector |
|
|
2214 Matrix::lssolve (const ComplexColumnVector& b) const |
|
|
2215 { |
|
|
2216 ComplexMatrix tmp (*this); |
|
|
2217 return tmp.lssolve (b); |
|
|
2218 } |
|
|
2219 |
|
|
2220 ComplexColumnVector |
|
5275
|
2221 Matrix::lssolve (const ComplexColumnVector& b, octave_idx_type& info) const |
|
458
|
2222 { |
|
|
2223 ComplexMatrix tmp (*this); |
|
|
2224 return tmp.lssolve (b, info); |
|
|
2225 } |
|
|
2226 |
|
|
2227 ComplexColumnVector |
|
5275
|
2228 Matrix::lssolve (const ComplexColumnVector& b, octave_idx_type& info, octave_idx_type& rank) const |
|
458
|
2229 { |
|
|
2230 ComplexMatrix tmp (*this); |
|
|
2231 return tmp.lssolve (b, info, rank); |
|
|
2232 } |
|
|
2233 |
|
1819
|
2234 // Constants for matrix exponential calculation. |
|
|
2235 |
|
|
2236 static double padec [] = |
|
|
2237 { |
|
|
2238 5.0000000000000000e-1, |
|
|
2239 1.1666666666666667e-1, |
|
|
2240 1.6666666666666667e-2, |
|
|
2241 1.6025641025641026e-3, |
|
|
2242 1.0683760683760684e-4, |
|
|
2243 4.8562548562548563e-6, |
|
|
2244 1.3875013875013875e-7, |
|
|
2245 1.9270852604185938e-9, |
|
|
2246 }; |
|
|
2247 |
|
|
2248 Matrix |
|
|
2249 Matrix::expm (void) const |
|
|
2250 { |
|
|
2251 Matrix retval; |
|
|
2252 |
|
|
2253 Matrix m = *this; |
|
|
2254 |
|
5275
|
2255 octave_idx_type nc = columns (); |
|
1819
|
2256 |
|
3130
|
2257 // Preconditioning step 1: trace normalization to reduce dynamic |
|
|
2258 // range of poles, but avoid making stable eigenvalues unstable. |
|
|
2259 |
|
1819
|
2260 // trace shift value |
|
3331
|
2261 volatile double trshift = 0.0; |
|
1819
|
2262 |
|
5275
|
2263 for (octave_idx_type i = 0; i < nc; i++) |
|
1819
|
2264 trshift += m.elem (i, i); |
|
|
2265 |
|
|
2266 trshift /= nc; |
|
|
2267 |
|
3130
|
2268 if (trshift > 0.0) |
|
|
2269 { |
|
5275
|
2270 for (octave_idx_type i = 0; i < nc; i++) |
|
3130
|
2271 m.elem (i, i) -= trshift; |
|
|
2272 } |
|
1819
|
2273 |
|
3331
|
2274 // Preconditioning step 2: balancing; code follows development |
|
|
2275 // in AEPBAL |
|
|
2276 |
|
|
2277 double *p_m = m.fortran_vec (); |
|
|
2278 |
|
5275
|
2279 octave_idx_type info, ilo, ihi, ilos, ihis; |
|
3468
|
2280 Array<double> dpermute (nc); |
|
|
2281 Array<double> dscale (nc); |
|
3466
|
2282 |
|
3468
|
2283 // permutation first |
|
|
2284 char job = 'P'; |
|
4552
|
2285 F77_XFCN (dgebal, DGEBAL, (F77_CONST_CHAR_ARG2 (&job, 1), |
|
|
2286 nc, p_m, nc, ilo, ihi, |
|
|
2287 dpermute.fortran_vec (), info |
|
|
2288 F77_CHAR_ARG_LEN (1))); |
|
3466
|
2289 |
|
3468
|
2290 // then scaling |
|
|
2291 job = 'S'; |
|
4552
|
2292 F77_XFCN (dgebal, DGEBAL, (F77_CONST_CHAR_ARG2 (&job, 1), |
|
|
2293 nc, p_m, nc, ilos, ihis, |
|
|
2294 dscale.fortran_vec (), info |
|
|
2295 F77_CHAR_ARG_LEN (1))); |
|
3331
|
2296 |
|
|
2297 if (f77_exception_encountered) |
|
|
2298 { |
|
|
2299 (*current_liboctave_error_handler) ("unrecoverable error in dgebal"); |
|
|
2300 return retval; |
|
|
2301 } |
|
|
2302 |
|
1819
|
2303 // Preconditioning step 3: scaling. |
|
3331
|
2304 |
|
1819
|
2305 ColumnVector work(nc); |
|
3130
|
2306 double inf_norm; |
|
3331
|
2307 |
|
4552
|
2308 F77_XFCN (xdlange, XDLANGE, (F77_CONST_CHAR_ARG2 ("I", 1), |
|
|
2309 nc, nc, m.fortran_vec (), nc, |
|
|
2310 work.fortran_vec (), inf_norm |
|
|
2311 F77_CHAR_ARG_LEN (1))); |
|
3331
|
2312 |
|
|
2313 if (f77_exception_encountered) |
|
|
2314 { |
|
|
2315 (*current_liboctave_error_handler) ("unrecoverable error in dlange"); |
|
|
2316 return retval; |
|
|
2317 } |
|
1819
|
2318 |
|
5275
|
2319 octave_idx_type sqpow = static_cast<octave_idx_type> (inf_norm > 0.0 |
|
1819
|
2320 ? (1.0 + log (inf_norm) / log (2.0)) |
|
|
2321 : 0.0); |
|
3331
|
2322 |
|
1819
|
2323 // Check whether we need to square at all. |
|
3331
|
2324 |
|
1819
|
2325 if (sqpow < 0) |
|
|
2326 sqpow = 0; |
|
3331
|
2327 |
|
1819
|
2328 if (sqpow > 0) |
|
|
2329 { |
|
|
2330 double scale_factor = 1.0; |
|
5275
|
2331 for (octave_idx_type i = 0; i < sqpow; i++) |
|
1819
|
2332 scale_factor *= 2.0; |
|
3331
|
2333 |
|
1819
|
2334 m = m / scale_factor; |
|
|
2335 } |
|
3331
|
2336 |
|
1819
|
2337 // npp, dpp: pade' approx polynomial matrices. |
|
3331
|
2338 |
|
1819
|
2339 Matrix npp (nc, nc, 0.0); |
|
|
2340 Matrix dpp = npp; |
|
3331
|
2341 |
|
1819
|
2342 // Now powers a^8 ... a^1. |
|
3331
|
2343 |
|
5275
|
2344 octave_idx_type minus_one_j = -1; |
|
|
2345 for (octave_idx_type j = 7; j >= 0; j--) |
|
1819
|
2346 { |
|
3573
|
2347 npp = m * npp + padec[j] * m; |
|
|
2348 dpp = m * dpp + (minus_one_j * padec[j]) * m; |
|
1819
|
2349 minus_one_j *= -1; |
|
|
2350 } |
|
3331
|
2351 |
|
1819
|
2352 // Zero power. |
|
3331
|
2353 |
|
1819
|
2354 dpp = -dpp; |
|
5275
|
2355 for (octave_idx_type j = 0; j < nc; j++) |
|
1819
|
2356 { |
|
|
2357 npp.elem (j, j) += 1.0; |
|
|
2358 dpp.elem (j, j) += 1.0; |
|
|
2359 } |
|
3331
|
2360 |
|
1819
|
2361 // Compute pade approximation = inverse (dpp) * npp. |
|
|
2362 |
|
3331
|
2363 retval = dpp.solve (npp, info); |
|
|
2364 |
|
1819
|
2365 // Reverse preconditioning step 3: repeated squaring. |
|
3331
|
2366 |
|
1819
|
2367 while (sqpow) |
|
|
2368 { |
|
|
2369 retval = retval * retval; |
|
|
2370 sqpow--; |
|
|
2371 } |
|
3331
|
2372 |
|
1819
|
2373 // Reverse preconditioning step 2: inverse balancing. |
|
3466
|
2374 // apply inverse scaling to computed exponential |
|
5275
|
2375 for (octave_idx_type i = 0; i < nc; i++) |
|
|
2376 for (octave_idx_type j = 0; j < nc; j++) |
|
3468
|
2377 retval(i,j) *= dscale(i) / dscale(j); |
|
3466
|
2378 |
|
4153
|
2379 OCTAVE_QUIT; |
|
|
2380 |
|
3466
|
2381 // construct balancing permutation vector |
|
5275
|
2382 Array<octave_idx_type> iperm (nc); |
|
|
2383 for (octave_idx_type i = 0; i < nc; i++) |
|
4593
|
2384 iperm(i) = i; // identity permutation |
|
3466
|
2385 |
|
|
2386 // leading permutations in forward order |
|
5275
|
2387 for (octave_idx_type i = 0; i < (ilo-1); i++) |
|
3468
|
2388 { |
|
5275
|
2389 octave_idx_type swapidx = static_cast<octave_idx_type> (dpermute(i)) - 1; |
|
|
2390 octave_idx_type tmp = iperm(i); |
|
4593
|
2391 iperm(i) = iperm (swapidx); |
|
|
2392 iperm(swapidx) = tmp; |
|
3468
|
2393 } |
|
3466
|
2394 |
|
|
2395 // trailing permutations must be done in reverse order |
|
5275
|
2396 for (octave_idx_type i = nc - 1; i >= ihi; i--) |
|
3468
|
2397 { |
|
5275
|
2398 octave_idx_type swapidx = static_cast<octave_idx_type> (dpermute(i)) - 1; |
|
|
2399 octave_idx_type tmp = iperm(i); |
|
4593
|
2400 iperm(i) = iperm(swapidx); |
|
|
2401 iperm(swapidx) = tmp; |
|
3468
|
2402 } |
|
3466
|
2403 |
|
|
2404 // construct inverse balancing permutation vector |
|
5275
|
2405 Array<octave_idx_type> invpvec (nc); |
|
|
2406 for (octave_idx_type i = 0; i < nc; i++) |
|
4593
|
2407 invpvec(iperm(i)) = i; // Thanks to R. A. Lippert for this method |
|
4153
|
2408 |
|
|
2409 OCTAVE_QUIT; |
|
3466
|
2410 |
|
|
2411 Matrix tmpMat = retval; |
|
5275
|
2412 for (octave_idx_type i = 0; i < nc; i++) |
|
|
2413 for (octave_idx_type j = 0; j < nc; j++) |
|
3468
|
2414 retval(i,j) = tmpMat(invpvec(i),invpvec(j)); |
|
3466
|
2415 |
|
1819
|
2416 // Reverse preconditioning step 1: fix trace normalization. |
|
3331
|
2417 |
|
3130
|
2418 if (trshift > 0.0) |
|
|
2419 retval = exp (trshift) * retval; |
|
|
2420 |
|
|
2421 return retval; |
|
1819
|
2422 } |
|
|
2423 |
|
458
|
2424 Matrix& |
|
|
2425 Matrix::operator += (const DiagMatrix& a) |
|
|
2426 { |
|
5275
|
2427 octave_idx_type nr = rows (); |
|
|
2428 octave_idx_type nc = cols (); |
|
|
2429 |
|
|
2430 octave_idx_type a_nr = a.rows (); |
|
|
2431 octave_idx_type a_nc = a.cols (); |
|
2385
|
2432 |
|
|
2433 if (nr != a_nr || nc != a_nc) |
|
458
|
2434 { |
|
2385
|
2435 gripe_nonconformant ("operator +=", nr, nc, a_nr, a_nc); |
|
458
|
2436 return *this; |
|
|
2437 } |
|
|
2438 |
|
5275
|
2439 for (octave_idx_type i = 0; i < a.length (); i++) |
|
458
|
2440 elem (i, i) += a.elem (i, i); |
|
|
2441 |
|
|
2442 return *this; |
|
|
2443 } |
|
|
2444 |
|
|
2445 Matrix& |
|
|
2446 Matrix::operator -= (const DiagMatrix& a) |
|
|
2447 { |
|
5275
|
2448 octave_idx_type nr = rows (); |
|
|
2449 octave_idx_type nc = cols (); |
|
|
2450 |
|
|
2451 octave_idx_type a_nr = a.rows (); |
|
|
2452 octave_idx_type a_nc = a.cols (); |
|
2385
|
2453 |
|
|
2454 if (nr != a_nr || nc != a_nc) |
|
458
|
2455 { |
|
2385
|
2456 gripe_nonconformant ("operator -=", nr, nc, a_nr, a_nc); |
|
458
|
2457 return *this; |
|
|
2458 } |
|
|
2459 |
|
5275
|
2460 for (octave_idx_type i = 0; i < a.length (); i++) |
|
458
|
2461 elem (i, i) -= a.elem (i, i); |
|
|
2462 |
|
|
2463 return *this; |
|
|
2464 } |
|
|
2465 |
|
|
2466 // unary operations |
|
|
2467 |
|
2964
|
2468 boolMatrix |
|
458
|
2469 Matrix::operator ! (void) const |
|
|
2470 { |
|
5275
|
2471 octave_idx_type nr = rows (); |
|
|
2472 octave_idx_type nc = cols (); |
|
458
|
2473 |
|
2964
|
2474 boolMatrix b (nr, nc); |
|
458
|
2475 |
|
5275
|
2476 for (octave_idx_type j = 0; j < nc; j++) |
|
|
2477 for (octave_idx_type i = 0; i < nr; i++) |
|
458
|
2478 b.elem (i, j) = ! elem (i, j); |
|
|
2479 |
|
|
2480 return b; |
|
|
2481 } |
|
|
2482 |
|
1205
|
2483 // column vector by row vector -> matrix operations |
|
458
|
2484 |
|
1205
|
2485 Matrix |
|
|
2486 operator * (const ColumnVector& v, const RowVector& a) |
|
458
|
2487 { |
|
1948
|
2488 Matrix retval; |
|
|
2489 |
|
5275
|
2490 octave_idx_type len = v.length (); |
|
3233
|
2491 |
|
|
2492 if (len != 0) |
|
1205
|
2493 { |
|
5275
|
2494 octave_idx_type a_len = a.length (); |
|
3233
|
2495 |
|
|
2496 retval.resize (len, a_len); |
|
|
2497 double *c = retval.fortran_vec (); |
|
|
2498 |
|
4552
|
2499 F77_XFCN (dgemm, DGEMM, (F77_CONST_CHAR_ARG2 ("N", 1), |
|
|
2500 F77_CONST_CHAR_ARG2 ("N", 1), |
|
|
2501 len, a_len, 1, 1.0, v.data (), len, |
|
|
2502 a.data (), 1, 0.0, c, len |
|
|
2503 F77_CHAR_ARG_LEN (1) |
|
|
2504 F77_CHAR_ARG_LEN (1))); |
|
3233
|
2505 |
|
|
2506 if (f77_exception_encountered) |
|
|
2507 (*current_liboctave_error_handler) |
|
|
2508 ("unrecoverable error in dgemm"); |
|
1205
|
2509 } |
|
458
|
2510 |
|
1948
|
2511 return retval; |
|
458
|
2512 } |
|
|
2513 |
|
|
2514 // other operations. |
|
|
2515 |
|
|
2516 Matrix |
|
2676
|
2517 Matrix::map (d_d_Mapper f) const |
|
1205
|
2518 { |
|
2676
|
2519 Matrix b (*this); |
|
|
2520 return b.apply (f); |
|
1205
|
2521 } |
|
|
2522 |
|
3248
|
2523 boolMatrix |
|
|
2524 Matrix::map (b_d_Mapper f) const |
|
|
2525 { |
|
5275
|
2526 octave_idx_type nr = rows (); |
|
|
2527 octave_idx_type nc = cols (); |
|
3248
|
2528 |
|
|
2529 boolMatrix retval (nr, nc); |
|
|
2530 |
|
5275
|
2531 for (octave_idx_type j = 0; j < nc; j++) |
|
|
2532 for (octave_idx_type i = 0; i < nr; i++) |
|
3248
|
2533 retval(i,j) = f (elem(i,j)); |
|
|
2534 |
|
|
2535 return retval; |
|
|
2536 } |
|
|
2537 |
|
2676
|
2538 Matrix& |
|
|
2539 Matrix::apply (d_d_Mapper f) |
|
458
|
2540 { |
|
|
2541 double *d = fortran_vec (); // Ensures only one reference to my privates! |
|
|
2542 |
|
5275
|
2543 for (octave_idx_type i = 0; i < length (); i++) |
|
458
|
2544 d[i] = f (d[i]); |
|
2676
|
2545 |
|
|
2546 return *this; |
|
458
|
2547 } |
|
|
2548 |
|
2385
|
2549 bool |
|
4431
|
2550 Matrix::any_element_is_negative (bool neg_zero) const |
|
2385
|
2551 { |
|
5275
|
2552 octave_idx_type nel = nelem (); |
|
2385
|
2553 |
|
4431
|
2554 if (neg_zero) |
|
|
2555 { |
|
5275
|
2556 for (octave_idx_type i = 0; i < nel; i++) |
|
4634
|
2557 if (lo_ieee_signbit (elem (i))) |
|
|
2558 return true; |
|
4431
|
2559 } |
|
|
2560 else |
|
|
2561 { |
|
5275
|
2562 for (octave_idx_type i = 0; i < nel; i++) |
|
4634
|
2563 if (elem (i) < 0) |
|
|
2564 return true; |
|
4431
|
2565 } |
|
2385
|
2566 |
|
|
2567 return false; |
|
|
2568 } |
|
|
2569 |
|
|
2570 |
|
|
2571 bool |
|
|
2572 Matrix::any_element_is_inf_or_nan (void) const |
|
|
2573 { |
|
5275
|
2574 octave_idx_type nel = nelem (); |
|
|
2575 |
|
|
2576 for (octave_idx_type i = 0; i < nel; i++) |
|
4634
|
2577 { |
|
|
2578 double val = elem (i); |
|
|
2579 if (xisinf (val) || xisnan (val)) |
|
|
2580 return true; |
|
|
2581 } |
|
|
2582 |
|
|
2583 return false; |
|
2385
|
2584 } |
|
|
2585 |
|
|
2586 bool |
|
5943
|
2587 Matrix::any_element_not_one_or_zero (void) const |
|
|
2588 { |
|
|
2589 octave_idx_type nel = nelem (); |
|
|
2590 |
|
|
2591 for (octave_idx_type i = 0; i < nel; i++) |
|
|
2592 { |
|
|
2593 double val = elem (i); |
|
|
2594 if (val != 0 && val != 1) |
|
|
2595 return true; |
|
|
2596 } |
|
|
2597 |
|
|
2598 return false; |
|
|
2599 } |
|
|
2600 |
|
|
2601 bool |
|
2385
|
2602 Matrix::all_elements_are_int_or_inf_or_nan (void) const |
|
|
2603 { |
|
5275
|
2604 octave_idx_type nel = nelem (); |
|
|
2605 |
|
|
2606 for (octave_idx_type i = 0; i < nel; i++) |
|
4634
|
2607 { |
|
|
2608 double val = elem (i); |
|
|
2609 if (xisnan (val) || D_NINT (val) == val) |
|
|
2610 continue; |
|
|
2611 else |
|
|
2612 return false; |
|
|
2613 } |
|
2385
|
2614 |
|
|
2615 return true; |
|
|
2616 } |
|
|
2617 |
|
1968
|
2618 // Return nonzero if any element of M is not an integer. Also extract |
|
|
2619 // the largest and smallest values and return them in MAX_VAL and MIN_VAL. |
|
|
2620 |
|
2385
|
2621 bool |
|
1968
|
2622 Matrix::all_integers (double& max_val, double& min_val) const |
|
|
2623 { |
|
5275
|
2624 octave_idx_type nel = nelem (); |
|
4634
|
2625 |
|
|
2626 if (nel > 0) |
|
1968
|
2627 { |
|
4634
|
2628 max_val = elem (0); |
|
|
2629 min_val = elem (0); |
|
1968
|
2630 } |
|
|
2631 else |
|
2385
|
2632 return false; |
|
1968
|
2633 |
|
5275
|
2634 for (octave_idx_type i = 0; i < nel; i++) |
|
4634
|
2635 { |
|
|
2636 double val = elem (i); |
|
|
2637 |
|
|
2638 if (val > max_val) |
|
|
2639 max_val = val; |
|
|
2640 |
|
|
2641 if (val < min_val) |
|
|
2642 min_val = val; |
|
|
2643 |
|
|
2644 if (D_NINT (val) != val) |
|
|
2645 return false; |
|
|
2646 } |
|
2385
|
2647 |
|
|
2648 return true; |
|
1968
|
2649 } |
|
|
2650 |
|
2385
|
2651 bool |
|
1968
|
2652 Matrix::too_large_for_float (void) const |
|
|
2653 { |
|
5275
|
2654 octave_idx_type nel = nelem (); |
|
|
2655 |
|
|
2656 for (octave_idx_type i = 0; i < nel; i++) |
|
4634
|
2657 { |
|
|
2658 double val = elem (i); |
|
|
2659 |
|
5389
|
2660 if (! (xisnan (val) || xisinf (val)) |
|
5387
|
2661 && fabs (val) > FLT_MAX) |
|
4634
|
2662 return true; |
|
|
2663 } |
|
1968
|
2664 |
|
2385
|
2665 return false; |
|
1968
|
2666 } |
|
|
2667 |
|
5775
|
2668 // FIXME Do these really belong here? Maybe they should be |
|
4015
|
2669 // in a base class? |
|
458
|
2670 |
|
2832
|
2671 boolMatrix |
|
4015
|
2672 Matrix::all (int dim) const |
|
458
|
2673 { |
|
4015
|
2674 MX_ALL_OP (dim); |
|
458
|
2675 } |
|
|
2676 |
|
2832
|
2677 boolMatrix |
|
4015
|
2678 Matrix::any (int dim) const |
|
458
|
2679 { |
|
4015
|
2680 MX_ANY_OP (dim); |
|
458
|
2681 } |
|
|
2682 |
|
|
2683 Matrix |
|
3723
|
2684 Matrix::cumprod (int dim) const |
|
458
|
2685 { |
|
4015
|
2686 MX_CUMULATIVE_OP (Matrix, double, *=); |
|
458
|
2687 } |
|
|
2688 |
|
|
2689 Matrix |
|
3723
|
2690 Matrix::cumsum (int dim) const |
|
458
|
2691 { |
|
4015
|
2692 MX_CUMULATIVE_OP (Matrix, double, +=); |
|
458
|
2693 } |
|
|
2694 |
|
|
2695 Matrix |
|
3723
|
2696 Matrix::prod (int dim) const |
|
458
|
2697 { |
|
3864
|
2698 MX_REDUCTION_OP (Matrix, *=, 1.0, 1.0); |
|
458
|
2699 } |
|
|
2700 |
|
|
2701 Matrix |
|
3723
|
2702 Matrix::sum (int dim) const |
|
458
|
2703 { |
|
3864
|
2704 MX_REDUCTION_OP (Matrix, +=, 0.0, 0.0); |
|
458
|
2705 } |
|
|
2706 |
|
|
2707 Matrix |
|
3723
|
2708 Matrix::sumsq (int dim) const |
|
458
|
2709 { |
|
3864
|
2710 #define ROW_EXPR \ |
|
|
2711 double d = elem (i, j); \ |
|
|
2712 retval.elem (i, 0) += d * d |
|
|
2713 |
|
|
2714 #define COL_EXPR \ |
|
|
2715 double d = elem (i, j); \ |
|
|
2716 retval.elem (0, j) += d * d |
|
|
2717 |
|
|
2718 MX_BASE_REDUCTION_OP (Matrix, ROW_EXPR, COL_EXPR, 0.0, 0.0); |
|
|
2719 |
|
|
2720 #undef ROW_EXPR |
|
|
2721 #undef COL_EXPR |
|
458
|
2722 } |
|
|
2723 |
|
2385
|
2724 Matrix |
|
|
2725 Matrix::abs (void) const |
|
|
2726 { |
|
5275
|
2727 octave_idx_type nr = rows (); |
|
|
2728 octave_idx_type nc = cols (); |
|
2385
|
2729 |
|
|
2730 Matrix retval (nr, nc); |
|
|
2731 |
|
5275
|
2732 for (octave_idx_type j = 0; j < nc; j++) |
|
|
2733 for (octave_idx_type i = 0; i < nr; i++) |
|
2385
|
2734 retval (i, j) = fabs (elem (i, j)); |
|
|
2735 |
|
|
2736 return retval; |
|
|
2737 } |
|
|
2738 |
|
458
|
2739 ColumnVector |
|
|
2740 Matrix::diag (void) const |
|
|
2741 { |
|
|
2742 return diag (0); |
|
|
2743 } |
|
|
2744 |
|
|
2745 ColumnVector |
|
5275
|
2746 Matrix::diag (octave_idx_type k) const |
|
458
|
2747 { |
|
5275
|
2748 octave_idx_type nnr = rows (); |
|
|
2749 octave_idx_type nnc = cols (); |
|
458
|
2750 if (k > 0) |
|
|
2751 nnc -= k; |
|
|
2752 else if (k < 0) |
|
|
2753 nnr += k; |
|
|
2754 |
|
|
2755 ColumnVector d; |
|
|
2756 |
|
|
2757 if (nnr > 0 && nnc > 0) |
|
|
2758 { |
|
5275
|
2759 octave_idx_type ndiag = (nnr < nnc) ? nnr : nnc; |
|
458
|
2760 |
|
|
2761 d.resize (ndiag); |
|
|
2762 |
|
|
2763 if (k > 0) |
|
|
2764 { |
|
5275
|
2765 for (octave_idx_type i = 0; i < ndiag; i++) |
|
458
|
2766 d.elem (i) = elem (i, i+k); |
|
|
2767 } |
|
4509
|
2768 else if (k < 0) |
|
458
|
2769 { |
|
5275
|
2770 for (octave_idx_type i = 0; i < ndiag; i++) |
|
458
|
2771 d.elem (i) = elem (i-k, i); |
|
|
2772 } |
|
|
2773 else |
|
|
2774 { |
|
5275
|
2775 for (octave_idx_type i = 0; i < ndiag; i++) |
|
458
|
2776 d.elem (i) = elem (i, i); |
|
|
2777 } |
|
|
2778 } |
|
|
2779 else |
|
4513
|
2780 (*current_liboctave_error_handler) |
|
|
2781 ("diag: requested diagonal out of range"); |
|
458
|
2782 |
|
|
2783 return d; |
|
|
2784 } |
|
|
2785 |
|
|
2786 ColumnVector |
|
|
2787 Matrix::row_min (void) const |
|
|
2788 { |
|
5275
|
2789 Array<octave_idx_type> dummy_idx; |
|
4587
|
2790 return row_min (dummy_idx); |
|
458
|
2791 } |
|
|
2792 |
|
|
2793 ColumnVector |
|
5275
|
2794 Matrix::row_min (Array<octave_idx_type>& idx_arg) const |
|
458
|
2795 { |
|
|
2796 ColumnVector result; |
|
|
2797 |
|
5275
|
2798 octave_idx_type nr = rows (); |
|
|
2799 octave_idx_type nc = cols (); |
|
458
|
2800 |
|
|
2801 if (nr > 0 && nc > 0) |
|
|
2802 { |
|
|
2803 result.resize (nr); |
|
4587
|
2804 idx_arg.resize (nr); |
|
458
|
2805 |
|
5275
|
2806 for (octave_idx_type i = 0; i < nr; i++) |
|
458
|
2807 { |
|
5275
|
2808 octave_idx_type idx_j; |
|
4469
|
2809 |
|
|
2810 double tmp_min = octave_NaN; |
|
|
2811 |
|
|
2812 for (idx_j = 0; idx_j < nc; idx_j++) |
|
2354
|
2813 { |
|
4469
|
2814 tmp_min = elem (i, idx_j); |
|
|
2815 |
|
5389
|
2816 if (! xisnan (tmp_min)) |
|
4469
|
2817 break; |
|
|
2818 } |
|
|
2819 |
|
5275
|
2820 for (octave_idx_type j = idx_j+1; j < nc; j++) |
|
4469
|
2821 { |
|
|
2822 double tmp = elem (i, j); |
|
|
2823 |
|
5389
|
2824 if (xisnan (tmp)) |
|
4469
|
2825 continue; |
|
|
2826 else if (tmp < tmp_min) |
|
2354
|
2827 { |
|
4469
|
2828 idx_j = j; |
|
|
2829 tmp_min = tmp; |
|
2354
|
2830 } |
|
|
2831 } |
|
|
2832 |
|
4469
|
2833 result.elem (i) = tmp_min; |
|
5389
|
2834 idx_arg.elem (i) = xisnan (tmp_min) ? 0 : idx_j; |
|
458
|
2835 } |
|
|
2836 } |
|
|
2837 |
|
|
2838 return result; |
|
|
2839 } |
|
|
2840 |
|
|
2841 ColumnVector |
|
|
2842 Matrix::row_max (void) const |
|
|
2843 { |
|
5275
|
2844 Array<octave_idx_type> dummy_idx; |
|
4587
|
2845 return row_max (dummy_idx); |
|
458
|
2846 } |
|
|
2847 |
|
|
2848 ColumnVector |
|
5275
|
2849 Matrix::row_max (Array<octave_idx_type>& idx_arg) const |
|
458
|
2850 { |
|
|
2851 ColumnVector result; |
|
|
2852 |
|
5275
|
2853 octave_idx_type nr = rows (); |
|
|
2854 octave_idx_type nc = cols (); |
|
458
|
2855 |
|
|
2856 if (nr > 0 && nc > 0) |
|
|
2857 { |
|
|
2858 result.resize (nr); |
|
4587
|
2859 idx_arg.resize (nr); |
|
458
|
2860 |
|
5275
|
2861 for (octave_idx_type i = 0; i < nr; i++) |
|
458
|
2862 { |
|
5275
|
2863 octave_idx_type idx_j; |
|
4469
|
2864 |
|
|
2865 double tmp_max = octave_NaN; |
|
|
2866 |
|
|
2867 for (idx_j = 0; idx_j < nc; idx_j++) |
|
2354
|
2868 { |
|
4469
|
2869 tmp_max = elem (i, idx_j); |
|
|
2870 |
|
5389
|
2871 if (! xisnan (tmp_max)) |
|
4469
|
2872 break; |
|
|
2873 } |
|
|
2874 |
|
5275
|
2875 for (octave_idx_type j = idx_j+1; j < nc; j++) |
|
4469
|
2876 { |
|
|
2877 double tmp = elem (i, j); |
|
|
2878 |
|
5389
|
2879 if (xisnan (tmp)) |
|
4469
|
2880 continue; |
|
|
2881 else if (tmp > tmp_max) |
|
2354
|
2882 { |
|
4469
|
2883 idx_j = j; |
|
|
2884 tmp_max = tmp; |
|
2354
|
2885 } |
|
|
2886 } |
|
|
2887 |
|
4469
|
2888 result.elem (i) = tmp_max; |
|
5389
|
2889 idx_arg.elem (i) = xisnan (tmp_max) ? 0 : idx_j; |
|
458
|
2890 } |
|
|
2891 } |
|
|
2892 |
|
|
2893 return result; |
|
|
2894 } |
|
|
2895 |
|
|
2896 RowVector |
|
|
2897 Matrix::column_min (void) const |
|
|
2898 { |
|
5275
|
2899 Array<octave_idx_type> dummy_idx; |
|
4587
|
2900 return column_min (dummy_idx); |
|
458
|
2901 } |
|
2354
|
2902 |
|
458
|
2903 RowVector |
|
5275
|
2904 Matrix::column_min (Array<octave_idx_type>& idx_arg) const |
|
458
|
2905 { |
|
|
2906 RowVector result; |
|
|
2907 |
|
5275
|
2908 octave_idx_type nr = rows (); |
|
|
2909 octave_idx_type nc = cols (); |
|
458
|
2910 |
|
|
2911 if (nr > 0 && nc > 0) |
|
|
2912 { |
|
|
2913 result.resize (nc); |
|
4587
|
2914 idx_arg.resize (nc); |
|
458
|
2915 |
|
5275
|
2916 for (octave_idx_type j = 0; j < nc; j++) |
|
458
|
2917 { |
|
5275
|
2918 octave_idx_type idx_i; |
|
4469
|
2919 |
|
|
2920 double tmp_min = octave_NaN; |
|
|
2921 |
|
|
2922 for (idx_i = 0; idx_i < nr; idx_i++) |
|
2354
|
2923 { |
|
4469
|
2924 tmp_min = elem (idx_i, j); |
|
|
2925 |
|
5389
|
2926 if (! xisnan (tmp_min)) |
|
4469
|
2927 break; |
|
|
2928 } |
|
|
2929 |
|
5275
|
2930 for (octave_idx_type i = idx_i+1; i < nr; i++) |
|
4469
|
2931 { |
|
|
2932 double tmp = elem (i, j); |
|
|
2933 |
|
5389
|
2934 if (xisnan (tmp)) |
|
4469
|
2935 continue; |
|
|
2936 else if (tmp < tmp_min) |
|
2354
|
2937 { |
|
4469
|
2938 idx_i = i; |
|
|
2939 tmp_min = tmp; |
|
2354
|
2940 } |
|
|
2941 } |
|
|
2942 |
|
4469
|
2943 result.elem (j) = tmp_min; |
|
5389
|
2944 idx_arg.elem (j) = xisnan (tmp_min) ? 0 : idx_i; |
|
458
|
2945 } |
|
|
2946 } |
|
|
2947 |
|
|
2948 return result; |
|
|
2949 } |
|
|
2950 |
|
2354
|
2951 RowVector |
|
|
2952 Matrix::column_max (void) const |
|
|
2953 { |
|
5275
|
2954 Array<octave_idx_type> dummy_idx; |
|
4587
|
2955 return column_max (dummy_idx); |
|
2354
|
2956 } |
|
458
|
2957 |
|
|
2958 RowVector |
|
5275
|
2959 Matrix::column_max (Array<octave_idx_type>& idx_arg) const |
|
458
|
2960 { |
|
|
2961 RowVector result; |
|
|
2962 |
|
5275
|
2963 octave_idx_type nr = rows (); |
|
|
2964 octave_idx_type nc = cols (); |
|
458
|
2965 |
|
|
2966 if (nr > 0 && nc > 0) |
|
|
2967 { |
|
|
2968 result.resize (nc); |
|
4587
|
2969 idx_arg.resize (nc); |
|
458
|
2970 |
|
5275
|
2971 for (octave_idx_type j = 0; j < nc; j++) |
|
458
|
2972 { |
|
5275
|
2973 octave_idx_type idx_i; |
|
4469
|
2974 |
|
|
2975 double tmp_max = octave_NaN; |
|
|
2976 |
|
|
2977 for (idx_i = 0; idx_i < nr; idx_i++) |
|
2354
|
2978 { |
|
4469
|
2979 tmp_max = elem (idx_i, j); |
|
|
2980 |
|
5389
|
2981 if (! xisnan (tmp_max)) |
|
4469
|
2982 break; |
|
|
2983 } |
|
|
2984 |
|
5275
|
2985 for (octave_idx_type i = idx_i+1; i < nr; i++) |
|
4469
|
2986 { |
|
|
2987 double tmp = elem (i, j); |
|
|
2988 |
|
5389
|
2989 if (xisnan (tmp)) |
|
4469
|
2990 continue; |
|
|
2991 else if (tmp > tmp_max) |
|
2354
|
2992 { |
|
4469
|
2993 idx_i = i; |
|
|
2994 tmp_max = tmp; |
|
2354
|
2995 } |
|
|
2996 } |
|
|
2997 |
|
4469
|
2998 result.elem (j) = tmp_max; |
|
5389
|
2999 idx_arg.elem (j) = xisnan (tmp_max) ? 0 : idx_i; |
|
458
|
3000 } |
|
|
3001 } |
|
|
3002 |
|
|
3003 return result; |
|
|
3004 } |
|
|
3005 |
|
3504
|
3006 std::ostream& |
|
|
3007 operator << (std::ostream& os, const Matrix& a) |
|
458
|
3008 { |
|
5275
|
3009 for (octave_idx_type i = 0; i < a.rows (); i++) |
|
458
|
3010 { |
|
5275
|
3011 for (octave_idx_type j = 0; j < a.cols (); j++) |
|
4130
|
3012 { |
|
|
3013 os << " "; |
|
|
3014 octave_write_double (os, a.elem (i, j)); |
|
|
3015 } |
|
458
|
3016 os << "\n"; |
|
|
3017 } |
|
|
3018 return os; |
|
|
3019 } |
|
|
3020 |
|
3504
|
3021 std::istream& |
|
|
3022 operator >> (std::istream& is, Matrix& a) |
|
458
|
3023 { |
|
5275
|
3024 octave_idx_type nr = a.rows (); |
|
|
3025 octave_idx_type nc = a.cols (); |
|
458
|
3026 |
|
|
3027 if (nr < 1 || nc < 1) |
|
3504
|
3028 is.clear (std::ios::badbit); |
|
458
|
3029 else |
|
|
3030 { |
|
|
3031 double tmp; |
|
5275
|
3032 for (octave_idx_type i = 0; i < nr; i++) |
|
|
3033 for (octave_idx_type j = 0; j < nc; j++) |
|
458
|
3034 { |
|
4130
|
3035 tmp = octave_read_double (is); |
|
458
|
3036 if (is) |
|
|
3037 a.elem (i, j) = tmp; |
|
|
3038 else |
|
2795
|
3039 goto done; |
|
458
|
3040 } |
|
|
3041 } |
|
|
3042 |
|
2795
|
3043 done: |
|
|
3044 |
|
458
|
3045 return is; |
|
|
3046 } |
|
|
3047 |
|
1819
|
3048 Matrix |
|
|
3049 Givens (double x, double y) |
|
|
3050 { |
|
|
3051 double cc, s, temp_r; |
|
|
3052 |
|
3887
|
3053 F77_FUNC (dlartg, DLARTG) (x, y, cc, s, temp_r); |
|
1819
|
3054 |
|
|
3055 Matrix g (2, 2); |
|
|
3056 |
|
|
3057 g.elem (0, 0) = cc; |
|
|
3058 g.elem (1, 1) = cc; |
|
|
3059 g.elem (0, 1) = s; |
|
|
3060 g.elem (1, 0) = -s; |
|
|
3061 |
|
|
3062 return g; |
|
|
3063 } |
|
|
3064 |
|
|
3065 Matrix |
|
|
3066 Sylvester (const Matrix& a, const Matrix& b, const Matrix& c) |
|
|
3067 { |
|
|
3068 Matrix retval; |
|
|
3069 |
|
5775
|
3070 // FIXME -- need to check that a, b, and c are all the same |
|
1819
|
3071 // size. |
|
|
3072 |
|
|
3073 // Compute Schur decompositions. |
|
|
3074 |
|
|
3075 SCHUR as (a, "U"); |
|
|
3076 SCHUR bs (b, "U"); |
|
|
3077 |
|
|
3078 // Transform c to new coordinates. |
|
|
3079 |
|
|
3080 Matrix ua = as.unitary_matrix (); |
|
|
3081 Matrix sch_a = as.schur_matrix (); |
|
|
3082 |
|
|
3083 Matrix ub = bs.unitary_matrix (); |
|
|
3084 Matrix sch_b = bs.schur_matrix (); |
|
|
3085 |
|
|
3086 Matrix cx = ua.transpose () * c * ub; |
|
|
3087 |
|
|
3088 // Solve the sylvester equation, back-transform, and return the |
|
|
3089 // solution. |
|
|
3090 |
|
5275
|
3091 octave_idx_type a_nr = a.rows (); |
|
|
3092 octave_idx_type b_nr = b.rows (); |
|
1819
|
3093 |
|
|
3094 double scale; |
|
5275
|
3095 octave_idx_type info; |
|
1819
|
3096 |
|
1950
|
3097 double *pa = sch_a.fortran_vec (); |
|
|
3098 double *pb = sch_b.fortran_vec (); |
|
|
3099 double *px = cx.fortran_vec (); |
|
|
3100 |
|
4552
|
3101 F77_XFCN (dtrsyl, DTRSYL, (F77_CONST_CHAR_ARG2 ("N", 1), |
|
|
3102 F77_CONST_CHAR_ARG2 ("N", 1), |
|
|
3103 1, a_nr, b_nr, pa, a_nr, pb, |
|
|
3104 b_nr, px, a_nr, scale, info |
|
|
3105 F77_CHAR_ARG_LEN (1) |
|
|
3106 F77_CHAR_ARG_LEN (1))); |
|
1950
|
3107 |
|
|
3108 |
|
|
3109 if (f77_exception_encountered) |
|
|
3110 (*current_liboctave_error_handler) ("unrecoverable error in dtrsyl"); |
|
|
3111 else |
|
|
3112 { |
|
5775
|
3113 // FIXME -- check info? |
|
1819
|
3114 |
|
1950
|
3115 retval = -ua*cx*ub.transpose (); |
|
|
3116 } |
|
1819
|
3117 |
|
|
3118 return retval; |
|
|
3119 } |
|
|
3120 |
|
2828
|
3121 // matrix by matrix -> matrix operations |
|
|
3122 |
|
6162
|
3123 /* Simple Dot Product, Matrix-Vector and Matrix-Matrix Unit tests |
|
|
3124 %!assert([1 2 3] * [ 4 ; 5 ; 6], 32, 1e-14) |
|
|
3125 %!assert([1 2 ; 3 4 ] * [5 ; 6], [17 ; 39 ], 1e-14) |
|
|
3126 %!assert([1 2 ; 3 4 ] * [5 6 ; 7 8], [19 22; 43 50], 1e-14) |
|
|
3127 */ |
|
|
3128 |
|
|
3129 /* Test some simple identities |
|
|
3130 %!shared M, cv, rv |
|
|
3131 %! M = randn(10,10); |
|
|
3132 %! cv = randn(10,1); |
|
|
3133 %! rv = randn(1,10); |
|
|
3134 %!assert([M*cv,M*cv],M*[cv,cv],1e-14) |
|
|
3135 %!assert([rv*M;rv*M],[rv;rv]*M,1e-14) |
|
|
3136 %!assert(2*rv*cv,[rv,rv]*[cv;cv],1e-14) |
|
|
3137 */ |
|
|
3138 |
|
|
3139 |
|
2828
|
3140 Matrix |
|
|
3141 operator * (const Matrix& m, const Matrix& a) |
|
|
3142 { |
|
|
3143 Matrix retval; |
|
|
3144 |
|
5275
|
3145 octave_idx_type nr = m.rows (); |
|
|
3146 octave_idx_type nc = m.cols (); |
|
|
3147 |
|
|
3148 octave_idx_type a_nr = a.rows (); |
|
|
3149 octave_idx_type a_nc = a.cols (); |
|
2828
|
3150 |
|
|
3151 if (nc != a_nr) |
|
|
3152 gripe_nonconformant ("operator *", nr, nc, a_nr, a_nc); |
|
|
3153 else |
|
|
3154 { |
|
|
3155 if (nr == 0 || nc == 0 || a_nc == 0) |
|
|
3156 retval.resize (nr, a_nc, 0.0); |
|
|
3157 else |
|
|
3158 { |
|
5275
|
3159 octave_idx_type ld = nr; |
|
|
3160 octave_idx_type lda = a_nr; |
|
2828
|
3161 |
|
|
3162 retval.resize (nr, a_nc); |
|
|
3163 double *c = retval.fortran_vec (); |
|
|
3164 |
|
5983
|
3165 if (a_nc == 1) |
|
|
3166 { |
|
|
3167 if (nr == 1) |
|
|
3168 F77_FUNC (xddot, XDDOT) (nc, m.data (), 1, a.data (), 1, *c); |
|
|
3169 else |
|
6390
|
3170 { |
|
|
3171 F77_XFCN (dgemv, DGEMV, (F77_CONST_CHAR_ARG2 ("N", 1), |
|
|
3172 nr, nc, 1.0, m.data (), ld, |
|
|
3173 a.data (), 1, 0.0, c, 1 |
|
|
3174 F77_CHAR_ARG_LEN (1))); |
|
|
3175 |
|
|
3176 if (f77_exception_encountered) |
|
|
3177 (*current_liboctave_error_handler) |
|
|
3178 ("unrecoverable error in dgemv"); |
|
|
3179 } |
|
5983
|
3180 } |
|
|
3181 else |
|
6390
|
3182 { |
|
|
3183 F77_XFCN (dgemm, DGEMM, (F77_CONST_CHAR_ARG2 ("N", 1), |
|
|
3184 F77_CONST_CHAR_ARG2 ("N", 1), |
|
|
3185 nr, a_nc, nc, 1.0, m.data (), |
|
|
3186 ld, a.data (), lda, 0.0, c, nr |
|
|
3187 F77_CHAR_ARG_LEN (1) |
|
|
3188 F77_CHAR_ARG_LEN (1))); |
|
|
3189 |
|
|
3190 if (f77_exception_encountered) |
|
|
3191 (*current_liboctave_error_handler) |
|
|
3192 ("unrecoverable error in dgemm"); |
|
|
3193 } |
|
2828
|
3194 } |
|
|
3195 } |
|
|
3196 |
|
|
3197 return retval; |
|
|
3198 } |
|
|
3199 |
|
5775
|
3200 // FIXME -- it would be nice to share code among the min/max |
|
4309
|
3201 // functions below. |
|
|
3202 |
|
|
3203 #define EMPTY_RETURN_CHECK(T) \ |
|
|
3204 if (nr == 0 || nc == 0) \ |
|
|
3205 return T (nr, nc); |
|
|
3206 |
|
|
3207 Matrix |
|
|
3208 min (double d, const Matrix& m) |
|
|
3209 { |
|
5275
|
3210 octave_idx_type nr = m.rows (); |
|
|
3211 octave_idx_type nc = m.columns (); |
|
4309
|
3212 |
|
|
3213 EMPTY_RETURN_CHECK (Matrix); |
|
|
3214 |
|
|
3215 Matrix result (nr, nc); |
|
|
3216 |
|
5275
|
3217 for (octave_idx_type j = 0; j < nc; j++) |
|
|
3218 for (octave_idx_type i = 0; i < nr; i++) |
|
4309
|
3219 { |
|
|
3220 OCTAVE_QUIT; |
|
|
3221 result (i, j) = xmin (d, m (i, j)); |
|
|
3222 } |
|
|
3223 |
|
|
3224 return result; |
|
|
3225 } |
|
|
3226 |
|
|
3227 Matrix |
|
|
3228 min (const Matrix& m, double d) |
|
|
3229 { |
|
5275
|
3230 octave_idx_type nr = m.rows (); |
|
|
3231 octave_idx_type nc = m.columns (); |
|
4309
|
3232 |
|
|
3233 EMPTY_RETURN_CHECK (Matrix); |
|
|
3234 |
|
|
3235 Matrix result (nr, nc); |
|
|
3236 |
|
5275
|
3237 for (octave_idx_type j = 0; j < nc; j++) |
|
|
3238 for (octave_idx_type i = 0; i < nr; i++) |
|
4309
|
3239 { |
|
|
3240 OCTAVE_QUIT; |
|
|
3241 result (i, j) = xmin (m (i, j), d); |
|
|
3242 } |
|
|
3243 |
|
|
3244 return result; |
|
|
3245 } |
|
|
3246 |
|
|
3247 Matrix |
|
|
3248 min (const Matrix& a, const Matrix& b) |
|
|
3249 { |
|
5275
|
3250 octave_idx_type nr = a.rows (); |
|
|
3251 octave_idx_type nc = a.columns (); |
|
4309
|
3252 |
|
|
3253 if (nr != b.rows () || nc != b.columns ()) |
|
|
3254 { |
|
|
3255 (*current_liboctave_error_handler) |
|
|
3256 ("two-arg min expecting args of same size"); |
|
|
3257 return Matrix (); |
|
|
3258 } |
|
|
3259 |
|
|
3260 EMPTY_RETURN_CHECK (Matrix); |
|
|
3261 |
|
|
3262 Matrix result (nr, nc); |
|
|
3263 |
|
5275
|
3264 for (octave_idx_type j = 0; j < nc; j++) |
|
|
3265 for (octave_idx_type i = 0; i < nr; i++) |
|
4309
|
3266 { |
|
|
3267 OCTAVE_QUIT; |
|
|
3268 result (i, j) = xmin (a (i, j), b (i, j)); |
|
|
3269 } |
|
|
3270 |
|
|
3271 return result; |
|
|
3272 } |
|
|
3273 |
|
|
3274 Matrix |
|
|
3275 max (double d, const Matrix& m) |
|
|
3276 { |
|
5275
|
3277 octave_idx_type nr = m.rows (); |
|
|
3278 octave_idx_type nc = m.columns (); |
|
4309
|
3279 |
|
|
3280 EMPTY_RETURN_CHECK (Matrix); |
|
|
3281 |
|
|
3282 Matrix result (nr, nc); |
|
|
3283 |
|
5275
|
3284 for (octave_idx_type j = 0; j < nc; j++) |
|
|
3285 for (octave_idx_type i = 0; i < nr; i++) |
|
4309
|
3286 { |
|
|
3287 OCTAVE_QUIT; |
|
|
3288 result (i, j) = xmax (d, m (i, j)); |
|
|
3289 } |
|
|
3290 |
|
|
3291 return result; |
|
|
3292 } |
|
|
3293 |
|
|
3294 Matrix |
|
|
3295 max (const Matrix& m, double d) |
|
|
3296 { |
|
5275
|
3297 octave_idx_type nr = m.rows (); |
|
|
3298 octave_idx_type nc = m.columns (); |
|
4309
|
3299 |
|
|
3300 EMPTY_RETURN_CHECK (Matrix); |
|
|
3301 |
|
|
3302 Matrix result (nr, nc); |
|
|
3303 |
|
5275
|
3304 for (octave_idx_type j = 0; j < nc; j++) |
|
|
3305 for (octave_idx_type i = 0; i < nr; i++) |
|
4309
|
3306 { |
|
|
3307 OCTAVE_QUIT; |
|
|
3308 result (i, j) = xmax (m (i, j), d); |
|
|
3309 } |
|
|
3310 |
|
|
3311 return result; |
|
|
3312 } |
|
|
3313 |
|
|
3314 Matrix |
|
|
3315 max (const Matrix& a, const Matrix& b) |
|
|
3316 { |
|
5275
|
3317 octave_idx_type nr = a.rows (); |
|
|
3318 octave_idx_type nc = a.columns (); |
|
4309
|
3319 |
|
|
3320 if (nr != b.rows () || nc != b.columns ()) |
|
|
3321 { |
|
|
3322 (*current_liboctave_error_handler) |
|
|
3323 ("two-arg max expecting args of same size"); |
|
|
3324 return Matrix (); |
|
|
3325 } |
|
|
3326 |
|
|
3327 EMPTY_RETURN_CHECK (Matrix); |
|
|
3328 |
|
|
3329 Matrix result (nr, nc); |
|
|
3330 |
|
5275
|
3331 for (octave_idx_type j = 0; j < nc; j++) |
|
|
3332 for (octave_idx_type i = 0; i < nr; i++) |
|
4309
|
3333 { |
|
|
3334 OCTAVE_QUIT; |
|
|
3335 result (i, j) = xmax (a (i, j), b (i, j)); |
|
|
3336 } |
|
|
3337 |
|
|
3338 return result; |
|
|
3339 } |
|
|
3340 |
|
2870
|
3341 MS_CMP_OPS(Matrix, , double, ) |
|
3504
|
3342 MS_BOOL_OPS(Matrix, double, 0.0) |
|
2870
|
3343 |
|
|
3344 SM_CMP_OPS(double, , Matrix, ) |
|
3504
|
3345 SM_BOOL_OPS(double, Matrix, 0.0) |
|
2870
|
3346 |
|
|
3347 MM_CMP_OPS(Matrix, , Matrix, ) |
|
3504
|
3348 MM_BOOL_OPS(Matrix, Matrix, 0.0) |
|
2870
|
3349 |
|
458
|
3350 /* |
|
|
3351 ;;; Local Variables: *** |
|
|
3352 ;;; mode: C++ *** |
|
|
3353 ;;; End: *** |
|
|
3354 */ |
