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annotate liboctave/EIG.cc @ 14138:72c96de7a403 stable

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maint: update copyright notices for 2012
author John W. Eaton <jwe@octave.org>
date Mon, 02 Jan 2012 14:25:41 -0500
parents 12df7854fa7c
children 460a3c6d8bf1
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1 /*
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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2
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3 Copyright (C) 1994-2012 John W. Eaton
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4
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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5 This file is part of Octave.
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6
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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7 Octave is free software; you can redistribute it and/or modify it
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
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10 option) any later version.
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11
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
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19 <http://www.gnu.org/licenses/>.
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20
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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21 */
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22
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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27 #include "EIG.h"
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28 #include "dColVector.h"
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29 #include "f77-fcn.h"
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30 #include "lo-error.h"
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31
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32 extern "C"
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33 {
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34 F77_RET_T
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35 F77_FUNC (dgeev, DGEEV) (F77_CONST_CHAR_ARG_DECL,
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36 F77_CONST_CHAR_ARG_DECL,
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37 const octave_idx_type&, double*,
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38 const octave_idx_type&, double*, double*,
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39 double*, const octave_idx_type&, double*,
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40 const octave_idx_type&, double*,
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41 const octave_idx_type&, octave_idx_type&
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42 F77_CHAR_ARG_LEN_DECL
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43 F77_CHAR_ARG_LEN_DECL);
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44
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45 F77_RET_T
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46 F77_FUNC (zgeev, ZGEEV) (F77_CONST_CHAR_ARG_DECL,
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47 F77_CONST_CHAR_ARG_DECL,
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48 const octave_idx_type&, Complex*,
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49 const octave_idx_type&, Complex*,
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50 Complex*, const octave_idx_type&, Complex*,
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51 const octave_idx_type&, Complex*,
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52 const octave_idx_type&, double*, octave_idx_type&
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53 F77_CHAR_ARG_LEN_DECL
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54 F77_CHAR_ARG_LEN_DECL);
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55
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56 F77_RET_T
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57 F77_FUNC (dsyev, DSYEV) (F77_CONST_CHAR_ARG_DECL,
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58 F77_CONST_CHAR_ARG_DECL,
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59 const octave_idx_type&, double*,
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60 const octave_idx_type&, double*, double*,
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61 const octave_idx_type&, octave_idx_type&
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62 F77_CHAR_ARG_LEN_DECL
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63 F77_CHAR_ARG_LEN_DECL);
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64
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65 F77_RET_T
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66 F77_FUNC (zheev, ZHEEV) (F77_CONST_CHAR_ARG_DECL,
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67 F77_CONST_CHAR_ARG_DECL,
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68 const octave_idx_type&, Complex*,
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69 const octave_idx_type&, double*,
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70 Complex*, const octave_idx_type&, double*,
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71 octave_idx_type&
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72 F77_CHAR_ARG_LEN_DECL
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73 F77_CHAR_ARG_LEN_DECL);
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74
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75 F77_RET_T
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76 F77_FUNC (dpotrf, DPOTRF) (F77_CONST_CHAR_ARG_DECL,
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77 const octave_idx_type&, double*,
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78 const octave_idx_type&, octave_idx_type&
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79 F77_CHAR_ARG_LEN_DECL
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80 F77_CHAR_ARG_LEN_DECL);
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81
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82 F77_RET_T
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83 F77_FUNC (zpotrf, ZPOTRF) (F77_CONST_CHAR_ARG_DECL,
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84 const octave_idx_type&,
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85 Complex*, const octave_idx_type&,
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86 octave_idx_type&
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87 F77_CHAR_ARG_LEN_DECL
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88 F77_CHAR_ARG_LEN_DECL);
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89
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90 F77_RET_T
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91 F77_FUNC (dggev, DGGEV) (F77_CONST_CHAR_ARG_DECL,
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92 F77_CONST_CHAR_ARG_DECL,
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93 const octave_idx_type&,
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94 double*, const octave_idx_type&,
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95 double*, const octave_idx_type&,
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96 double*, double*, double *, double*,
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97 const octave_idx_type&, double*,
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98 const octave_idx_type&, double*,
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99 const octave_idx_type&, octave_idx_type&
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100 F77_CHAR_ARG_LEN_DECL
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101 F77_CHAR_ARG_LEN_DECL);
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102
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103 F77_RET_T
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104 F77_FUNC (dsygv, DSYGV) (const octave_idx_type&,
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105 F77_CONST_CHAR_ARG_DECL,
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106 F77_CONST_CHAR_ARG_DECL,
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107 const octave_idx_type&, double*,
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108 const octave_idx_type&, double*,
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109 const octave_idx_type&, double*, double*,
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110 const octave_idx_type&, octave_idx_type&
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111 F77_CHAR_ARG_LEN_DECL
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112 F77_CHAR_ARG_LEN_DECL);
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113
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114 F77_RET_T
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115 F77_FUNC (zggev, ZGGEV) (F77_CONST_CHAR_ARG_DECL,
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116 F77_CONST_CHAR_ARG_DECL,
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117 const octave_idx_type&,
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118 Complex*, const octave_idx_type&,
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119 Complex*, const octave_idx_type&,
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120 Complex*, Complex*, Complex*,
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121 const octave_idx_type&, Complex*,
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122 const octave_idx_type&, Complex*,
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123 const octave_idx_type&, double*, octave_idx_type&
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124 F77_CHAR_ARG_LEN_DECL
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125 F77_CHAR_ARG_LEN_DECL);
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126
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127 F77_RET_T
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128 F77_FUNC (zhegv, ZHEGV) (const octave_idx_type&,
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129 F77_CONST_CHAR_ARG_DECL,
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130 F77_CONST_CHAR_ARG_DECL,
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131 const octave_idx_type&, Complex*,
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132 const octave_idx_type&, Complex*,
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133 const octave_idx_type&, double*, Complex*,
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134 const octave_idx_type&, double*, octave_idx_type&
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135 F77_CHAR_ARG_LEN_DECL
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136 F77_CHAR_ARG_LEN_DECL);
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137 }
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138
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139 octave_idx_type
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140 EIG::init (const Matrix& a, bool calc_ev)
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141 {
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142 if (a.any_element_is_inf_or_nan ())
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143 {
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144 (*current_liboctave_error_handler)
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145 ("EIG: matrix contains Inf or NaN values");
5822
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diff changeset
146 return -1;
4fdc2515ebad [project @ 2006-05-18 19:31:36 by jwe]
jwe
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diff changeset
147 }
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diff changeset
148
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149 if (a.is_symmetric ())
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150 return symmetric_init (a, calc_ev);
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151
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152 octave_idx_type n = a.rows ();
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153
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154 if (n != a.cols ())
462
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155 {
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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diff changeset
156 (*current_liboctave_error_handler) ("EIG requires square matrix");
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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diff changeset
157 return -1;
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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parents:
diff changeset
158 }
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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159
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160 octave_idx_type info = 0;
462
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161
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162 Matrix atmp = a;
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diff changeset
163 double *tmp_data = atmp.fortran_vec ();
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164
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165 Array<double> wr (dim_vector (n, 1));
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166 double *pwr = wr.fortran_vec ();
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167
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168 Array<double> wi (dim_vector (n, 1));
1934
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169 double *pwi = wi.fortran_vec ();
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170
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171 octave_idx_type tnvr = calc_ev ? n : 0;
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172 Matrix vr (tnvr, tnvr);
462
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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173 double *pvr = vr.fortran_vec ();
1934
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174
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175 octave_idx_type lwork = -1;
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176 double dummy_work;
462
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177
1365
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178 double *dummy = 0;
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179 octave_idx_type idummy = 1;
462
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180
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181 F77_XFCN (dgeev, DGEEV, (F77_CONST_CHAR_ARG2 ("N", 1),
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182 F77_CONST_CHAR_ARG2 (calc_ev ? "V" : "N", 1),
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183 n, tmp_data, n, pwr, pwi, dummy,
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184 idummy, pvr, n, &dummy_work, lwork, info
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185 F77_CHAR_ARG_LEN (1)
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186 F77_CHAR_ARG_LEN (1)));
462
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187
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188 if (info == 0)
462
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189 {
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190 lwork = static_cast<octave_idx_type> (dummy_work);
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191 Array<double> work (dim_vector (lwork, 1));
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192 double *pwork = work.fortran_vec ();
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193
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
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194 F77_XFCN (dgeev, DGEEV, (F77_CONST_CHAR_ARG2 ("N", 1),
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195 F77_CONST_CHAR_ARG2 (calc_ev ? "V" : "N", 1),
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196 n, tmp_data, n, pwr, pwi, dummy,
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197 idummy, pvr, n, pwork, lwork, info
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198 F77_CHAR_ARG_LEN (1)
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199 F77_CHAR_ARG_LEN (1)));
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200
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201 if (info < 0)
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202 {
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203 (*current_liboctave_error_handler) ("unrecoverable error in dgeev");
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204 return info;
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205 }
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206
2815
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diff changeset
207 if (info > 0)
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diff changeset
208 {
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
209 (*current_liboctave_error_handler) ("dgeev failed to converge");
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diff changeset
210 return info;
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diff changeset
211 }
1934
0e591d443ff0 [project @ 1996-02-12 03:25:10 by jwe]
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diff changeset
212
4800
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diff changeset
213 lambda.resize (n);
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diff changeset
214 octave_idx_type nvr = calc_ev ? n : 0;
4800
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diff changeset
215 v.resize (nvr, nvr);
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
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diff changeset
216
5275
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diff changeset
217 for (octave_idx_type j = 0; j < n; j++)
10314
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diff changeset
218 {
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
219 if (wi.elem (j) == 0.0)
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diff changeset
220 {
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
221 lambda.elem (j) = Complex (wr.elem (j));
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
222 for (octave_idx_type i = 0; i < nvr; i++)
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diff changeset
223 v.elem (i, j) = vr.elem (i, j);
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diff changeset
224 }
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
225 else
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
226 {
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
227 if (j+1 >= n)
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
228 {
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
229 (*current_liboctave_error_handler) ("EIG: internal error");
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diff changeset
230 return -1;
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diff changeset
231 }
4800
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diff changeset
232
10314
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diff changeset
233 lambda.elem(j) = Complex (wr.elem(j), wi.elem(j));
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diff changeset
234 lambda.elem(j+1) = Complex (wr.elem(j+1), wi.elem(j+1));
2815
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diff changeset
235
10314
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diff changeset
236 for (octave_idx_type i = 0; i < nvr; i++)
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diff changeset
237 {
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
238 double real_part = vr.elem (i, j);
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
239 double imag_part = vr.elem (i, j+1);
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
240 v.elem (i, j) = Complex (real_part, imag_part);
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
241 v.elem (i, j+1) = Complex (real_part, -imag_part);
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
242 }
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
243 j++;
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
244 }
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
245 }
2815
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parents: 2804
diff changeset
246 }
4800
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parents: 4725
diff changeset
247 else
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
jwe
parents: 4725
diff changeset
248 (*current_liboctave_error_handler) ("dgeev workspace query failed");
2815
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parents: 2804
diff changeset
249
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
250 return info;
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
251 }
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
252
11586
12df7854fa7c strip trailing whitespace from source files
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diff changeset
253 octave_idx_type
4725
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parents: 4552
diff changeset
254 EIG::symmetric_init (const Matrix& a, bool calc_ev)
2815
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diff changeset
255 {
5275
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parents: 5105
diff changeset
256 octave_idx_type n = a.rows ();
1934
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diff changeset
257
2815
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diff changeset
258 if (n != a.cols ())
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
259 {
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
260 (*current_liboctave_error_handler) ("EIG requires square matrix");
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
261 return -1;
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
262 }
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
263
5275
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diff changeset
264 octave_idx_type info = 0;
2815
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diff changeset
265
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
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parents: 2804
diff changeset
266 Matrix atmp = a;
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
267 double *tmp_data = atmp.fortran_vec ();
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
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diff changeset
268
3585
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parents: 3178
diff changeset
269 ColumnVector wr (n);
2815
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diff changeset
270 double *pwr = wr.fortran_vec ();
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diff changeset
271
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diff changeset
272 octave_idx_type lwork = -1;
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diff changeset
273 double dummy_work;
2815
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diff changeset
274
4725
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diff changeset
275 F77_XFCN (dsyev, DSYEV, (F77_CONST_CHAR_ARG2 (calc_ev ? "V" : "N", 1),
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diff changeset
276 F77_CONST_CHAR_ARG2 ("U", 1),
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diff changeset
277 n, tmp_data, n, pwr, &dummy_work, lwork, info
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diff changeset
278 F77_CHAR_ARG_LEN (1)
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diff changeset
279 F77_CHAR_ARG_LEN (1)));
2815
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diff changeset
280
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diff changeset
281 if (info == 0)
2815
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diff changeset
282 {
5275
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diff changeset
283 lwork = static_cast<octave_idx_type> (dummy_work);
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diff changeset
284 Array<double> work (dim_vector (lwork, 1));
4800
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diff changeset
285 double *pwork = work.fortran_vec ();
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
jwe
parents: 4725
diff changeset
286
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
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parents: 4725
diff changeset
287 F77_XFCN (dsyev, DSYEV, (F77_CONST_CHAR_ARG2 (calc_ev ? "V" : "N", 1),
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diff changeset
288 F77_CONST_CHAR_ARG2 ("U", 1),
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diff changeset
289 n, tmp_data, n, pwr, pwork, lwork, info
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diff changeset
290 F77_CHAR_ARG_LEN (1)
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291 F77_CHAR_ARG_LEN (1)));
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292
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293 if (info < 0)
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294 {
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295 (*current_liboctave_error_handler) ("unrecoverable error in dsyev");
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296 return info;
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297 }
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298
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
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299 if (info > 0)
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300 {
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301 (*current_liboctave_error_handler) ("dsyev failed to converge");
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302 return info;
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303 }
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304
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diff changeset
305 lambda = ComplexColumnVector (wr);
4725
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306 v = calc_ev ? ComplexMatrix (atmp) : ComplexMatrix ();
462
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307 }
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308 else
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
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309 (*current_liboctave_error_handler) ("dsyev workspace query failed");
462
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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parents:
diff changeset
310
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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311 return info;
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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312 }
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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313
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314 octave_idx_type
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315 EIG::init (const ComplexMatrix& a, bool calc_ev)
462
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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316 {
5822
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parents: 5307
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317 if (a.any_element_is_inf_or_nan ())
4fdc2515ebad [project @ 2006-05-18 19:31:36 by jwe]
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parents: 5307
diff changeset
318 {
4fdc2515ebad [project @ 2006-05-18 19:31:36 by jwe]
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319 (*current_liboctave_error_handler)
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320 ("EIG: matrix contains Inf or NaN values");
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321 return -1;
4fdc2515ebad [project @ 2006-05-18 19:31:36 by jwe]
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diff changeset
322 }
4fdc2515ebad [project @ 2006-05-18 19:31:36 by jwe]
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diff changeset
323
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324 if (a.is_hermitian ())
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325 return hermitian_init (a, calc_ev);
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326
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327 octave_idx_type n = a.rows ();
1934
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328
0e591d443ff0 [project @ 1996-02-12 03:25:10 by jwe]
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diff changeset
329 if (n != a.cols ())
462
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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diff changeset
330 {
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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331 (*current_liboctave_error_handler) ("EIG requires square matrix");
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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332 return -1;
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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333 }
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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334
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335 octave_idx_type info = 0;
462
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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336
1934
0e591d443ff0 [project @ 1996-02-12 03:25:10 by jwe]
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337 ComplexMatrix atmp = a;
0e591d443ff0 [project @ 1996-02-12 03:25:10 by jwe]
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338 Complex *tmp_data = atmp.fortran_vec ();
462
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339
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340 ComplexColumnVector w (n);
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341 Complex *pw = w.fortran_vec ();
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342
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343 octave_idx_type nvr = calc_ev ? n : 0;
4725
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344 ComplexMatrix vtmp (nvr, nvr);
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345 Complex *pv = vtmp.fortran_vec ();
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346
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347 octave_idx_type lwork = -1;
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348 Complex dummy_work;
1934
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349
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350 octave_idx_type lrwork = 2*n;
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351 Array<double> rwork (dim_vector (lrwork, 1));
1934
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diff changeset
352 double *prwork = rwork.fortran_vec ();
462
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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353
1365
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354 Complex *dummy = 0;
5275
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355 octave_idx_type idummy = 1;
462
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
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diff changeset
356
4552
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parents: 4192
diff changeset
357 F77_XFCN (zgeev, ZGEEV, (F77_CONST_CHAR_ARG2 ("N", 1),
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358 F77_CONST_CHAR_ARG2 (calc_ev ? "V" : "N", 1),
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diff changeset
359 n, tmp_data, n, pw, dummy, idummy,
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diff changeset
360 pv, n, &dummy_work, lwork, prwork, info
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diff changeset
361 F77_CHAR_ARG_LEN (1)
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diff changeset
362 F77_CHAR_ARG_LEN (1)));
2815
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diff changeset
363
7482
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diff changeset
364 if (info == 0)
2815
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diff changeset
365 {
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366 lwork = static_cast<octave_idx_type> (dummy_work.real ());
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367 Array<Complex> work (dim_vector (lwork, 1));
4800
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diff changeset
368 Complex *pwork = work.fortran_vec ();
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
jwe
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diff changeset
369
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
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diff changeset
370 F77_XFCN (zgeev, ZGEEV, (F77_CONST_CHAR_ARG2 ("N", 1),
10314
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diff changeset
371 F77_CONST_CHAR_ARG2 (calc_ev ? "V" : "N", 1),
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diff changeset
372 n, tmp_data, n, pw, dummy, idummy,
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diff changeset
373 pv, n, pwork, lwork, prwork, info
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
374 F77_CHAR_ARG_LEN (1)
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
375 F77_CHAR_ARG_LEN (1)));
4800
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diff changeset
376
7482
29980c6b8604 don't check f77_exception_encountered
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diff changeset
377 if (info < 0)
10314
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diff changeset
378 {
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
379 (*current_liboctave_error_handler) ("unrecoverable error in zgeev");
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diff changeset
380 return info;
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
381 }
4800
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parents: 4725
diff changeset
382
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
jwe
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diff changeset
383 if (info > 0)
10314
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diff changeset
384 {
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
385 (*current_liboctave_error_handler) ("zgeev failed to converge");
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diff changeset
386 return info;
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diff changeset
387 }
4800
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diff changeset
388
2815
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diff changeset
389 lambda = w;
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
390 v = vtmp;
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
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parents: 2804
diff changeset
391 }
4800
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parents: 4725
diff changeset
392 else
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
jwe
parents: 4725
diff changeset
393 (*current_liboctave_error_handler) ("zgeev workspace query failed");
2815
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
394
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
395 return info;
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
396 }
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
397
5275
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diff changeset
398 octave_idx_type
4725
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jwe
parents: 4552
diff changeset
399 EIG::hermitian_init (const ComplexMatrix& a, bool calc_ev)
2815
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parents: 2804
diff changeset
400 {
5275
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parents: 5105
diff changeset
401 octave_idx_type n = a.rows ();
2815
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diff changeset
402
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
403 if (n != a.cols ())
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
404 {
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
405 (*current_liboctave_error_handler) ("EIG requires square matrix");
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
406 return -1;
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
407 }
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
408
5275
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parents: 5105
diff changeset
409 octave_idx_type info = 0;
462
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
jwe
parents:
diff changeset
410
2815
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
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parents: 2804
diff changeset
411 ComplexMatrix atmp = a;
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
412 Complex *tmp_data = atmp.fortran_vec ();
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
413
3585
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jwe
parents: 3178
diff changeset
414 ColumnVector wr (n);
d9803711e047 [project @ 2000-02-08 04:35:39 by jwe]
jwe
parents: 3178
diff changeset
415 double *pwr = wr.fortran_vec ();
2815
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parents: 2804
diff changeset
416
5275
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diff changeset
417 octave_idx_type lwork = -1;
4800
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jwe
parents: 4725
diff changeset
418 Complex dummy_work;
2815
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
419
5275
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diff changeset
420 octave_idx_type lrwork = 3*n;
11570
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diff changeset
421 Array<double> rwork (dim_vector (lrwork, 1));
2815
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parents: 2804
diff changeset
422 double *prwork = rwork.fortran_vec ();
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
423
4725
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diff changeset
424 F77_XFCN (zheev, ZHEEV, (F77_CONST_CHAR_ARG2 (calc_ev ? "V" : "N", 1),
10314
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diff changeset
425 F77_CONST_CHAR_ARG2 ("U", 1),
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
426 n, tmp_data, n, pwr, &dummy_work, lwork,
07ebe522dac2 untabify liboctave C++ sources
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parents: 10158
diff changeset
427 prwork, info
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
428 F77_CHAR_ARG_LEN (1)
07ebe522dac2 untabify liboctave C++ sources
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diff changeset
429 F77_CHAR_ARG_LEN (1)));
2815
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
430
7482
29980c6b8604 don't check f77_exception_encountered
John W. Eaton <jwe@octave.org>
parents: 7017
diff changeset
431 if (info == 0)
2815
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
432 {
5275
23b37da9fd5b [project @ 2005-04-08 16:07:35 by jwe]
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parents: 5105
diff changeset
433 lwork = static_cast<octave_idx_type> (dummy_work.real ());
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
434 Array<Complex> work (dim_vector (lwork, 1));
4800
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
jwe
parents: 4725
diff changeset
435 Complex *pwork = work.fortran_vec ();
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
jwe
parents: 4725
diff changeset
436
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
jwe
parents: 4725
diff changeset
437 F77_XFCN (zheev, ZHEEV, (F77_CONST_CHAR_ARG2 (calc_ev ? "V" : "N", 1),
10314
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parents: 10158
diff changeset
438 F77_CONST_CHAR_ARG2 ("U", 1),
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
439 n, tmp_data, n, pwr, pwork, lwork, prwork, info
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
440 F77_CHAR_ARG_LEN (1)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
441 F77_CHAR_ARG_LEN (1)));
4800
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
jwe
parents: 4725
diff changeset
442
7482
29980c6b8604 don't check f77_exception_encountered
John W. Eaton <jwe@octave.org>
parents: 7017
diff changeset
443 if (info < 0)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
444 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
445 (*current_liboctave_error_handler) ("unrecoverable error in zheev");
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
446 return info;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
447 }
4800
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
jwe
parents: 4725
diff changeset
448
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
jwe
parents: 4725
diff changeset
449 if (info > 0)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
450 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
451 (*current_liboctave_error_handler) ("zheev failed to converge");
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
452 return info;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
453 }
4800
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
jwe
parents: 4725
diff changeset
454
3585
d9803711e047 [project @ 2000-02-08 04:35:39 by jwe]
jwe
parents: 3178
diff changeset
455 lambda = ComplexColumnVector (wr);
4725
fa612b2cbfe9 [project @ 2004-01-23 16:42:51 by jwe]
jwe
parents: 4552
diff changeset
456 v = calc_ev ? ComplexMatrix (atmp) : ComplexMatrix ();
2815
33486d9e2d00 [project @ 1997-03-14 08:24:46 by jwe]
jwe
parents: 2804
diff changeset
457 }
4800
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
jwe
parents: 4725
diff changeset
458 else
c322edde72ac [project @ 2004-02-25 03:54:33 by jwe]
jwe
parents: 4725
diff changeset
459 (*current_liboctave_error_handler) ("zheev workspace query failed");
462
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
jwe
parents:
diff changeset
460
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
jwe
parents:
diff changeset
461 return info;
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
jwe
parents:
diff changeset
462 }
07fabd96ac6a [project @ 1994-06-06 00:58:18 by jwe]
jwe
parents:
diff changeset
463
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
464 octave_idx_type
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
465 EIG::init (const Matrix& a, const Matrix& b, bool calc_ev)
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
466 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
467 if (a.any_element_is_inf_or_nan () || b.any_element_is_inf_or_nan ())
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
468 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
469 (*current_liboctave_error_handler)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
470 ("EIG: matrix contains Inf or NaN values");
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
471 return -1;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
472 }
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
473
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
474 octave_idx_type n = a.rows ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
475 octave_idx_type nb = b.rows ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
476
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
477 if (n != a.cols () || nb != b.cols ())
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
478 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
479 (*current_liboctave_error_handler) ("EIG requires square matrix");
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
480 return -1;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
481 }
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
482
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
483 if (n != nb)
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
484 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
485 (*current_liboctave_error_handler) ("EIG requires same size matrices");
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
486 return -1;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
487 }
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
488
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
489 octave_idx_type info = 0;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
490
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
491 Matrix tmp = b;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
492 double *tmp_data = tmp.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
493
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
494 F77_XFCN (dpotrf, DPOTRF, (F77_CONST_CHAR_ARG2 ("L", 1),
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
495 n, tmp_data, n,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
496 info
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
497 F77_CHAR_ARG_LEN (1)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
498 F77_CHAR_ARG_LEN (1)));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
499
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
500 if (a.is_symmetric () && b.is_symmetric () && info == 0)
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
501 return symmetric_init (a, b, calc_ev);
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
502
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
503 Matrix atmp = a;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
504 double *atmp_data = atmp.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
505
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
506 Matrix btmp = b;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
507 double *btmp_data = btmp.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
508
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
509 Array<double> ar (dim_vector (n, 1));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
510 double *par = ar.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
511
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
512 Array<double> ai (dim_vector (n, 1));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
513 double *pai = ai.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
514
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
515 Array<double> beta (dim_vector (n, 1));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
516 double *pbeta = beta.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
517
9020
728e7943752d EIG.cc: avoid volatile decl for tmp variable
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
518 octave_idx_type tnvr = calc_ev ? n : 0;
728e7943752d EIG.cc: avoid volatile decl for tmp variable
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
519 Matrix vr (tnvr, tnvr);
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
520 double *pvr = vr.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
521
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
522 octave_idx_type lwork = -1;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
523 double dummy_work;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
524
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
525 double *dummy = 0;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
526 octave_idx_type idummy = 1;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
527
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
528 F77_XFCN (dggev, DGGEV, (F77_CONST_CHAR_ARG2 ("N", 1),
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
529 F77_CONST_CHAR_ARG2 (calc_ev ? "V" : "N", 1),
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
530 n, atmp_data, n, btmp_data, n,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
531 par, pai, pbeta,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
532 dummy, idummy, pvr, n,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
533 &dummy_work, lwork, info
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
534 F77_CHAR_ARG_LEN (1)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
535 F77_CHAR_ARG_LEN (1)));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
536
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
537 if (info == 0)
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
538 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
539 lwork = static_cast<octave_idx_type> (dummy_work);
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
540 Array<double> work (dim_vector (lwork, 1));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
541 double *pwork = work.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
542
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
543 F77_XFCN (dggev, DGGEV, (F77_CONST_CHAR_ARG2 ("N", 1),
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
544 F77_CONST_CHAR_ARG2 (calc_ev ? "V" : "N", 1),
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
545 n, atmp_data, n, btmp_data, n,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
546 par, pai, pbeta,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
547 dummy, idummy, pvr, n,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
548 pwork, lwork, info
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
549 F77_CHAR_ARG_LEN (1)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
550 F77_CHAR_ARG_LEN (1)));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
551
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
552 if (info < 0)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
553 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
554 (*current_liboctave_error_handler) ("unrecoverable error in dggev");
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
555 return info;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
556 }
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
557
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
558 if (info > 0)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
559 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
560 (*current_liboctave_error_handler) ("dggev failed to converge");
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
561 return info;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
562 }
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
563
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
564 lambda.resize (n);
9020
728e7943752d EIG.cc: avoid volatile decl for tmp variable
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
565 octave_idx_type nvr = calc_ev ? n : 0;
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
566 v.resize (nvr, nvr);
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
567
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
568 for (octave_idx_type j = 0; j < n; j++)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
569 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
570 if (ai.elem (j) == 0.0)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
571 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
572 lambda.elem (j) = Complex (ar.elem (j) / beta.elem (j));
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
573 for (octave_idx_type i = 0; i < nvr; i++)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
574 v.elem (i, j) = vr.elem (i, j);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
575 }
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
576 else
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
577 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
578 if (j+1 >= n)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
579 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
580 (*current_liboctave_error_handler) ("EIG: internal error");
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
581 return -1;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
582 }
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
583
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
584 lambda.elem(j) = Complex (ar.elem(j) / beta.elem (j),
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
585 ai.elem(j) / beta.elem (j));
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
586 lambda.elem(j+1) = Complex (ar.elem(j+1) / beta.elem (j+1),
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
587 ai.elem(j+1) / beta.elem (j+1));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
588
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
589 for (octave_idx_type i = 0; i < nvr; i++)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
590 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
591 double real_part = vr.elem (i, j);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
592 double imag_part = vr.elem (i, j+1);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
593 v.elem (i, j) = Complex (real_part, imag_part);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
594 v.elem (i, j+1) = Complex (real_part, -imag_part);
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
595 }
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
596 j++;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
597 }
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
598 }
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
599 }
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
600 else
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
601 (*current_liboctave_error_handler) ("dggev workspace query failed");
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
602
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
603 return info;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
604 }
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
605
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
606 octave_idx_type
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
607 EIG::symmetric_init (const Matrix& a, const Matrix& b, bool calc_ev)
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
608 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
609 octave_idx_type n = a.rows ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
610 octave_idx_type nb = b.rows ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
611
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
612 if (n != a.cols () || nb != b.cols ())
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
613 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
614 (*current_liboctave_error_handler) ("EIG requires square matrix");
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
615 return -1;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
616 }
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
617
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
618 if (n != nb)
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
619 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
620 (*current_liboctave_error_handler) ("EIG requires same size matrices");
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
621 return -1;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
622 }
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
623
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
624 octave_idx_type info = 0;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
625
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
626 Matrix atmp = a;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
627 double *atmp_data = atmp.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
628
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
629 Matrix btmp = b;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
630 double *btmp_data = btmp.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
631
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
632 ColumnVector wr (n);
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
633 double *pwr = wr.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
634
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
635 octave_idx_type lwork = -1;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
636 double dummy_work;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
637
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
638 F77_XFCN (dsygv, DSYGV, (1, F77_CONST_CHAR_ARG2 (calc_ev ? "V" : "N", 1),
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
639 F77_CONST_CHAR_ARG2 ("U", 1),
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
640 n, atmp_data, n,
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
641 btmp_data, n,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
642 pwr, &dummy_work, lwork, info
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
643 F77_CHAR_ARG_LEN (1)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
644 F77_CHAR_ARG_LEN (1)));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
645
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
646 if (info == 0)
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
647 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
648 lwork = static_cast<octave_idx_type> (dummy_work);
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
649 Array<double> work (dim_vector (lwork, 1));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
650 double *pwork = work.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
651
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
652 F77_XFCN (dsygv, DSYGV, (1, F77_CONST_CHAR_ARG2 (calc_ev ? "V" : "N", 1),
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
653 F77_CONST_CHAR_ARG2 ("U", 1),
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
654 n, atmp_data, n,
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
655 btmp_data, n,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
656 pwr, pwork, lwork, info
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
657 F77_CHAR_ARG_LEN (1)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
658 F77_CHAR_ARG_LEN (1)));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
659
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
660 if (info < 0)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
661 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
662 (*current_liboctave_error_handler) ("unrecoverable error in dsygv");
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
663 return info;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
664 }
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
665
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
666 if (info > 0)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
667 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
668 (*current_liboctave_error_handler) ("dsygv failed to converge");
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
669 return info;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
670 }
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
671
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
672 lambda = ComplexColumnVector (wr);
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
673 v = calc_ev ? ComplexMatrix (atmp) : ComplexMatrix ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
674 }
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
675 else
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
676 (*current_liboctave_error_handler) ("dsygv workspace query failed");
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
677
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
678 return info;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
679 }
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
680
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
681 octave_idx_type
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
682 EIG::init (const ComplexMatrix& a, const ComplexMatrix& b, bool calc_ev)
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
683 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
684 if (a.any_element_is_inf_or_nan () || b.any_element_is_inf_or_nan ())
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
685 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
686 (*current_liboctave_error_handler)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
687 ("EIG: matrix contains Inf or NaN values");
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
688 return -1;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
689 }
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
690
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
691 octave_idx_type n = a.rows ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
692 octave_idx_type nb = b.rows ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
693
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
694 if (n != a.cols () || nb != b.cols())
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
695 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
696 (*current_liboctave_error_handler) ("EIG requires square matrix");
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
697 return -1;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
698 }
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
699
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
700 if (n != nb)
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
701 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
702 (*current_liboctave_error_handler) ("EIG requires same size matrices");
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
703 return -1;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
704 }
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
705
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
706 octave_idx_type info = 0;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
707
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
708 ComplexMatrix tmp = b;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
709 Complex*tmp_data = tmp.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
710
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
711 F77_XFCN (zpotrf, ZPOTRF, (F77_CONST_CHAR_ARG2 ("L", 1),
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
712 n, tmp_data, n,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
713 info
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
714 F77_CHAR_ARG_LEN (1)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
715 F77_CHAR_ARG_LEN (1)));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
716
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
717 if (a.is_hermitian () && b.is_hermitian () && info == 0)
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
718 return hermitian_init (a, calc_ev);
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
719
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
720 ComplexMatrix atmp = a;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
721 Complex *atmp_data = atmp.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
722
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
723 ComplexMatrix btmp = b;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
724 Complex *btmp_data = btmp.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
725
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
726 ComplexColumnVector alpha (n);
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
727 Complex *palpha = alpha.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
728
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
729 ComplexColumnVector beta (n);
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
730 Complex *pbeta = beta.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
731
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
732 octave_idx_type nvr = calc_ev ? n : 0;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
733 ComplexMatrix vtmp (nvr, nvr);
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
734 Complex *pv = vtmp.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
735
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
736 octave_idx_type lwork = -1;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
737 Complex dummy_work;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
738
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
739 octave_idx_type lrwork = 8*n;
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
740 Array<double> rwork (dim_vector (lrwork, 1));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
741 double *prwork = rwork.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
742
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
743 Complex *dummy = 0;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
744 octave_idx_type idummy = 1;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
745
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
746 F77_XFCN (zggev, ZGGEV, (F77_CONST_CHAR_ARG2 ("N", 1),
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
747 F77_CONST_CHAR_ARG2 (calc_ev ? "V" : "N", 1),
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
748 n, atmp_data, n, btmp_data, n,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
749 palpha, pbeta, dummy, idummy,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
750 pv, n, &dummy_work, lwork, prwork, info
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
751 F77_CHAR_ARG_LEN (1)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
752 F77_CHAR_ARG_LEN (1)));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
753
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
754 if (info == 0)
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
755 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
756 lwork = static_cast<octave_idx_type> (dummy_work.real ());
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
757 Array<Complex> work (dim_vector (lwork, 1));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
758 Complex *pwork = work.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
759
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
760 F77_XFCN (zggev, ZGGEV, (F77_CONST_CHAR_ARG2 ("N", 1),
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
761 F77_CONST_CHAR_ARG2 (calc_ev ? "V" : "N", 1),
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
762 n, atmp_data, n, btmp_data, n,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
763 palpha, pbeta, dummy, idummy,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
764 pv, n, pwork, lwork, prwork, info
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
765 F77_CHAR_ARG_LEN (1)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
766 F77_CHAR_ARG_LEN (1)));
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
767
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
768 if (info < 0)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
769 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
770 (*current_liboctave_error_handler) ("unrecoverable error in zggev");
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
771 return info;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
772 }
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
773
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
774 if (info > 0)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
775 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
776 (*current_liboctave_error_handler) ("zggev failed to converge");
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
777 return info;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
778 }
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
779
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
780 lambda.resize (n);
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
781
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
782 for (octave_idx_type j = 0; j < n; j++)
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
783 lambda.elem (j) = alpha.elem (j) / beta.elem(j);
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
784
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
785 v = vtmp;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
786 }
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
787 else
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
788 (*current_liboctave_error_handler) ("zggev workspace query failed");
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
789
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
790 return info;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
791 }
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
792
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
793 octave_idx_type
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
794 EIG::hermitian_init (const ComplexMatrix& a, const ComplexMatrix& b, bool calc_ev)
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
795 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
796 octave_idx_type n = a.rows ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
797 octave_idx_type nb = b.rows ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
798
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
799 if (n != a.cols () || nb != b.cols ())
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
800 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
801 (*current_liboctave_error_handler) ("EIG requires square matrix");
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
802 return -1;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
803 }
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
804
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
805 if (n != nb)
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
806 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
807 (*current_liboctave_error_handler) ("EIG requires same size matrices");
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
808 return -1;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
809 }
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
810
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
811 octave_idx_type info = 0;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
812
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
813 ComplexMatrix atmp = a;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
814 Complex *atmp_data = atmp.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
815
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
816 ComplexMatrix btmp = b;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
817 Complex *btmp_data = btmp.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
818
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
819 ColumnVector wr (n);
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
820 double *pwr = wr.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
821
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
822 octave_idx_type lwork = -1;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
823 Complex dummy_work;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
824
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
825 octave_idx_type lrwork = 3*n;
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
826 Array<double> rwork (dim_vector (lrwork, 1));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
827 double *prwork = rwork.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
828
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
829 F77_XFCN (zhegv, ZHEGV, (1, F77_CONST_CHAR_ARG2 (calc_ev ? "V" : "N", 1),
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
830 F77_CONST_CHAR_ARG2 ("U", 1),
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
831 n, atmp_data, n,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
832 btmp_data, n,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
833 pwr, &dummy_work, lwork,
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
834 prwork, info
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
835 F77_CHAR_ARG_LEN (1)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
836 F77_CHAR_ARG_LEN (1)));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
837
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
838 if (info == 0)
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
839 {
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
840 lwork = static_cast<octave_idx_type> (dummy_work.real ());
11570
57632dea2446 attempt better backward compatibility for Array constructors
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
841 Array<Complex> work (dim_vector (lwork, 1));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
842 Complex *pwork = work.fortran_vec ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
843
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
844 F77_XFCN (zhegv, ZHEGV, (1, F77_CONST_CHAR_ARG2 (calc_ev ? "V" : "N", 1),
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
845 F77_CONST_CHAR_ARG2 ("U", 1),
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
846 n, atmp_data, n,
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11570
diff changeset
847 btmp_data, n,
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
848 pwr, pwork, lwork, prwork, info
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
849 F77_CHAR_ARG_LEN (1)
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
850 F77_CHAR_ARG_LEN (1)));
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
851
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
852 if (info < 0)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
853 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
854 (*current_liboctave_error_handler) ("unrecoverable error in zhegv");
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
855 return info;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
856 }
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
857
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
858 if (info > 0)
10314
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
859 {
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
860 (*current_liboctave_error_handler) ("zhegv failed to converge");
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
861 return info;
07ebe522dac2 untabify liboctave C++ sources
John W. Eaton <jwe@octave.org>
parents: 10158
diff changeset
862 }
8339
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
863
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
864 lambda = ComplexColumnVector (wr);
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
865 v = calc_ev ? ComplexMatrix (atmp) : ComplexMatrix ();
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
866 }
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
867 else
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
868 (*current_liboctave_error_handler) ("zhegv workspace query failed");
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
869
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
870 return info;
18c4ded8612a Add generalized eigenvalue functions
Jarkko Kaleva <d3roga@gmail.com>
parents: 7482
diff changeset
871 }