Mercurial > octave
annotate liboctave/numeric/hess.cc @ 27923:bd51beb6205e
update formatting of copyright notices
* Use <https://octave.org/copyright/> instead of
<https://octave.org/COPYRIGHT.html/>.
* For consistency with other comments in the Octave sources, use
C++-style comments for copyright blocks in C and C++ files.
* Use delimiters above and below copyright blocks that are appropriate
for the language used in the file.
* Eliminate extra spacing inside copyright blocks.
* lex.ll (looks_like_copyright): Also allow newlines and carriage
returns before the word "Copyright".
* scripts/mk-doc.pl (gethelp): Also skip empty comment lines.
* bp-table.cc, type.m: Adjust tests.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 08 Jan 2020 11:59:41 -0500 |
parents | 1891570abac8 |
children | 5c14f81e0937 0a5b15007766 |
rev | line source |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 1994-2020 The Octave Project Developers |
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4 // |
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5 // See the file COPYRIGHT.md in the top-level directory of this |
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6 // distribution or <https://octave.org/copyright/>. |
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7 // |
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8 // This file is part of Octave. |
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9 // |
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10 // Octave is free software: you can redistribute it and/or modify it |
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11 // under the terms of the GNU General Public License as published by |
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12 // the Free Software Foundation, either version 3 of the License, or |
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13 // (at your option) any later version. |
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14 // |
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15 // Octave is distributed in the hope that it will be useful, but |
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 // GNU General Public License for more details. |
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19 // |
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20 // You should have received a copy of the GNU General Public License |
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21 // along with Octave; see the file COPYING. If not, see |
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22 // <https://www.gnu.org/licenses/>. |
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23 // |
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24 //////////////////////////////////////////////////////////////////////// |
457 | 25 |
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26 #if defined (HAVE_CONFIG_H) |
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27 # include "config.h" |
457 | 28 #endif |
29 | |
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30 #include "Array.h" |
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31 #include "CMatrix.h" |
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32 #include "dMatrix.h" |
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33 #include "fCMatrix.h" |
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34 #include "fMatrix.h" |
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35 #include "hess.h" |
457 | 36 #include "lo-error.h" |
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37 #include "lo-lapack-proto.h" |
457 | 38 |
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39 namespace octave |
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40 { |
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41 namespace math |
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42 { |
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43 template <> |
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44 octave_idx_type |
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45 hess<Matrix>::init (const Matrix& a) |
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46 { |
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47 F77_INT a_nr = to_f77_int (a.rows ()); |
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48 F77_INT a_nc = to_f77_int (a.cols ()); |
457 | 49 |
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50 if (a_nr != a_nc) |
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51 (*current_liboctave_error_handler) ("hess: requires square matrix"); |
457 | 52 |
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53 char job = 'N'; |
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54 char side = 'R'; |
457 | 55 |
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56 F77_INT n = a_nc; |
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57 F77_INT lwork = 32 * n; |
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58 F77_INT info; |
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59 F77_INT ilo; |
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60 F77_INT ihi; |
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61 |
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62 hess_mat = a; |
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63 double *h = hess_mat.fortran_vec (); |
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64 |
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65 Array<double> scale (dim_vector (n, 1)); |
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66 double *pscale = scale.fortran_vec (); |
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67 |
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68 F77_XFCN (dgebal, DGEBAL, (F77_CONST_CHAR_ARG2 (&job, 1), |
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69 n, h, n, ilo, ihi, pscale, info |
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70 F77_CHAR_ARG_LEN (1))); |
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71 |
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72 Array<double> tau (dim_vector (n-1, 1)); |
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73 double *ptau = tau.fortran_vec (); |
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74 |
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75 Array<double> work (dim_vector (lwork, 1)); |
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76 double *pwork = work.fortran_vec (); |
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77 |
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78 F77_XFCN (dgehrd, DGEHRD, (n, ilo, ihi, h, n, ptau, pwork, |
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79 lwork, info)); |
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80 |
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81 unitary_hess_mat = hess_mat; |
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82 double *z = unitary_hess_mat.fortran_vec (); |
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83 |
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84 F77_XFCN (dorghr, DORGHR, (n, ilo, ihi, z, n, ptau, pwork, |
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85 lwork, info)); |
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86 |
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87 F77_XFCN (dgebak, DGEBAK, (F77_CONST_CHAR_ARG2 (&job, 1), |
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88 F77_CONST_CHAR_ARG2 (&side, 1), |
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89 n, ilo, ihi, pscale, n, z, |
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90 n, info |
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91 F77_CHAR_ARG_LEN (1) |
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92 F77_CHAR_ARG_LEN (1))); |
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93 |
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94 // If someone thinks of a more graceful way of doing |
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95 // this (or faster for that matter :-)), please let |
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96 // me know! |
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97 |
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98 if (n > 2) |
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99 for (F77_INT j = 0; j < a_nc; j++) |
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100 for (F77_INT i = j+2; i < a_nr; i++) |
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101 hess_mat.elem (i, j) = 0; |
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102 |
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103 return info; |
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104 } |
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105 |
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106 template <> |
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107 octave_idx_type |
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108 hess<FloatMatrix>::init (const FloatMatrix& a) |
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109 { |
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110 F77_INT a_nr = to_f77_int (a.rows ()); |
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111 F77_INT a_nc = to_f77_int (a.cols ()); |
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112 |
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113 if (a_nr != a_nc) |
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114 (*current_liboctave_error_handler) ("hess: requires square matrix"); |
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115 |
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116 char job = 'N'; |
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117 char side = 'R'; |
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118 |
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119 F77_INT n = a_nc; |
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120 F77_INT lwork = 32 * n; |
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121 F77_INT info; |
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122 F77_INT ilo; |
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123 F77_INT ihi; |
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124 |
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125 hess_mat = a; |
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126 float *h = hess_mat.fortran_vec (); |
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127 |
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128 Array<float> scale (dim_vector (n, 1)); |
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129 float *pscale = scale.fortran_vec (); |
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130 |
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131 F77_XFCN (sgebal, SGEBAL, (F77_CONST_CHAR_ARG2 (&job, 1), |
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132 n, h, n, ilo, ihi, pscale, info |
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133 F77_CHAR_ARG_LEN (1))); |
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134 |
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135 Array<float> tau (dim_vector (n-1, 1)); |
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136 float *ptau = tau.fortran_vec (); |
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137 |
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138 Array<float> work (dim_vector (lwork, 1)); |
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139 float *pwork = work.fortran_vec (); |
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140 |
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141 F77_XFCN (sgehrd, SGEHRD, (n, ilo, ihi, h, n, ptau, pwork, |
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142 lwork, info)); |
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143 |
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144 unitary_hess_mat = hess_mat; |
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145 float *z = unitary_hess_mat.fortran_vec (); |
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146 |
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147 F77_XFCN (sorghr, SORGHR, (n, ilo, ihi, z, n, ptau, pwork, |
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148 lwork, info)); |
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149 |
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150 F77_XFCN (sgebak, SGEBAK, (F77_CONST_CHAR_ARG2 (&job, 1), |
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151 F77_CONST_CHAR_ARG2 (&side, 1), |
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152 n, ilo, ihi, pscale, n, z, |
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153 n, info |
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154 F77_CHAR_ARG_LEN (1) |
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155 F77_CHAR_ARG_LEN (1))); |
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156 |
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157 // If someone thinks of a more graceful way of doing |
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158 // this (or faster for that matter :-)), please let |
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159 // me know! |
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160 |
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161 if (n > 2) |
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162 for (F77_INT j = 0; j < a_nc; j++) |
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163 for (F77_INT i = j+2; i < a_nr; i++) |
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164 hess_mat.elem (i, j) = 0; |
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165 |
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166 return info; |
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167 } |
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168 |
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169 template <> |
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170 octave_idx_type |
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171 hess<ComplexMatrix>::init (const ComplexMatrix& a) |
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172 { |
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173 F77_INT a_nr = to_f77_int (a.rows ()); |
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174 F77_INT a_nc = to_f77_int (a.cols ()); |
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175 |
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176 if (a_nr != a_nc) |
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177 (*current_liboctave_error_handler) ("hess: requires square matrix"); |
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178 |
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179 char job = 'N'; |
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180 char side = 'R'; |
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181 |
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182 F77_INT n = a_nc; |
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183 F77_INT lwork = 32 * n; |
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184 F77_INT info; |
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185 F77_INT ilo; |
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186 F77_INT ihi; |
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187 |
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188 hess_mat = a; |
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189 Complex *h = hess_mat.fortran_vec (); |
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190 |
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191 Array<double> scale (dim_vector (n, 1)); |
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192 double *pscale = scale.fortran_vec (); |
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193 |
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194 F77_XFCN (zgebal, ZGEBAL, (F77_CONST_CHAR_ARG2 (&job, 1), |
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195 n, F77_DBLE_CMPLX_ARG (h), n, ilo, ihi, pscale, info |
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196 F77_CHAR_ARG_LEN (1))); |
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197 |
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198 Array<Complex> tau (dim_vector (n-1, 1)); |
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199 Complex *ptau = tau.fortran_vec (); |
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200 |
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201 Array<Complex> work (dim_vector (lwork, 1)); |
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202 Complex *pwork = work.fortran_vec (); |
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203 |
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204 F77_XFCN (zgehrd, ZGEHRD, (n, ilo, ihi, F77_DBLE_CMPLX_ARG (h), n, |
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205 F77_DBLE_CMPLX_ARG (ptau), F77_DBLE_CMPLX_ARG (pwork), lwork, info)); |
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206 |
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207 unitary_hess_mat = hess_mat; |
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208 Complex *z = unitary_hess_mat.fortran_vec (); |
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209 |
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210 F77_XFCN (zunghr, ZUNGHR, (n, ilo, ihi, F77_DBLE_CMPLX_ARG (z), n, |
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211 F77_DBLE_CMPLX_ARG (ptau), F77_DBLE_CMPLX_ARG (pwork), |
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212 lwork, info)); |
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213 |
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214 F77_XFCN (zgebak, ZGEBAK, (F77_CONST_CHAR_ARG2 (&job, 1), |
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215 F77_CONST_CHAR_ARG2 (&side, 1), |
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216 n, ilo, ihi, pscale, n, F77_DBLE_CMPLX_ARG (z), n, info |
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217 F77_CHAR_ARG_LEN (1) |
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218 F77_CHAR_ARG_LEN (1))); |
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219 |
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220 // If someone thinks of a more graceful way of |
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221 // doing this (or faster for that matter :-)), |
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222 // please let me know! |
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223 |
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224 if (n > 2) |
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225 for (F77_INT j = 0; j < a_nc; j++) |
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226 for (F77_INT i = j+2; i < a_nr; i++) |
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227 hess_mat.elem (i, j) = 0; |
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228 |
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229 return info; |
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230 } |
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231 |
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232 template <> |
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233 octave_idx_type |
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234 hess<FloatComplexMatrix>::init (const FloatComplexMatrix& a) |
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235 { |
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236 F77_INT a_nr = to_f77_int (a.rows ()); |
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237 F77_INT a_nc = to_f77_int (a.cols ()); |
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238 |
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239 if (a_nr != a_nc) |
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240 { |
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241 (*current_liboctave_error_handler) ("hess: requires square matrix"); |
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242 return -1; |
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243 } |
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244 |
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245 char job = 'N'; |
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246 char side = 'R'; |
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247 |
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248 F77_INT n = a_nc; |
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249 F77_INT lwork = 32 * n; |
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250 F77_INT info; |
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251 F77_INT ilo; |
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252 F77_INT ihi; |
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253 |
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254 hess_mat = a; |
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255 FloatComplex *h = hess_mat.fortran_vec (); |
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256 |
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257 Array<float> scale (dim_vector (n, 1)); |
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258 float *pscale = scale.fortran_vec (); |
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259 |
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260 F77_XFCN (cgebal, CGEBAL, (F77_CONST_CHAR_ARG2 (&job, 1), |
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261 n, F77_CMPLX_ARG (h), n, ilo, ihi, pscale, info |
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262 F77_CHAR_ARG_LEN (1))); |
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263 |
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264 Array<FloatComplex> tau (dim_vector (n-1, 1)); |
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265 FloatComplex *ptau = tau.fortran_vec (); |
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266 |
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267 Array<FloatComplex> work (dim_vector (lwork, 1)); |
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268 FloatComplex *pwork = work.fortran_vec (); |
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269 |
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270 F77_XFCN (cgehrd, CGEHRD, (n, ilo, ihi, F77_CMPLX_ARG (h), n, |
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271 F77_CMPLX_ARG (ptau), F77_CMPLX_ARG (pwork), lwork, info)); |
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272 |
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273 unitary_hess_mat = hess_mat; |
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274 FloatComplex *z = unitary_hess_mat.fortran_vec (); |
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275 |
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276 F77_XFCN (cunghr, CUNGHR, (n, ilo, ihi, F77_CMPLX_ARG (z), n, |
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277 F77_CMPLX_ARG (ptau), F77_CMPLX_ARG (pwork), |
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278 lwork, info)); |
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279 |
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280 F77_XFCN (cgebak, CGEBAK, (F77_CONST_CHAR_ARG2 (&job, 1), |
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281 F77_CONST_CHAR_ARG2 (&side, 1), |
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282 n, ilo, ihi, pscale, n, F77_CMPLX_ARG (z), n, info |
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283 F77_CHAR_ARG_LEN (1) |
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284 F77_CHAR_ARG_LEN (1))); |
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285 |
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286 // If someone thinks of a more graceful way of |
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287 // doing this (or faster for that matter :-)), |
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288 // please let me know! |
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289 |
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290 if (n > 2) |
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291 for (F77_INT j = 0; j < a_nc; j++) |
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292 for (F77_INT i = j+2; i < a_nr; i++) |
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293 hess_mat.elem (i, j) = 0; |
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294 |
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295 return info; |
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296 } |
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297 } |
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298 } |