Mercurial > octave
annotate liboctave/numeric/gepbalance.cc @ 33634:4a70f390c85e default tip @
maint: Merge stable to default.
author | Markus Mützel <markus.muetzel@gmx.de> |
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date | Tue, 28 May 2024 15:25:54 +0200 |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 1994-2024 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 //////////////////////////////////////////////////////////////////////// |
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25 |
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26 #if defined (HAVE_CONFIG_H) |
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27 # include "config.h" |
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28 #endif |
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29 |
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30 #include "CMatrix.h" |
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31 #include "dMatrix.h" |
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32 #include "fCMatrix.h" |
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33 #include "fMatrix.h" |
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34 #include "gepbalance.h" |
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35 #include "lo-array-errwarn.h" |
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36 #include "lo-error.h" |
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37 #include "lo-lapack-proto.h" |
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38 #include "oct-locbuf.h" |
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39 #include "quit.h" |
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40 |
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41 OCTAVE_BEGIN_NAMESPACE(octave) |
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42 |
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43 OCTAVE_BEGIN_NAMESPACE(math) |
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44 |
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45 template <> |
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46 OCTAVE_API octave_idx_type |
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47 gepbalance<Matrix>::init (const Matrix& a, const Matrix& b, |
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48 const std::string& balance_job) |
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49 { |
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50 F77_INT n = to_f77_int (a.cols ()); |
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51 |
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52 if (a.rows () != n) |
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53 (*current_liboctave_error_handler) |
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54 ("GEPBALANCE requires square matrix"); |
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55 |
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56 if (a.dims () != b.dims ()) |
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57 err_nonconformant ("GEPBALANCE", n, n, b.rows(), b.cols()); |
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58 |
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59 F77_INT info; |
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60 F77_INT ilo; |
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61 F77_INT ihi; |
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62 |
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63 OCTAVE_LOCAL_BUFFER (double, plscale, n); |
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64 OCTAVE_LOCAL_BUFFER (double, prscale, n); |
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65 OCTAVE_LOCAL_BUFFER (double, pwork, 6 * n); |
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66 |
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67 m_balanced_mat = a; |
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68 double *p_balanced_mat = m_balanced_mat.rwdata (); |
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69 m_balanced_mat2 = b; |
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70 double *p_balanced_mat2 = m_balanced_mat2.rwdata (); |
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71 |
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72 char job = balance_job[0]; |
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73 |
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74 F77_XFCN (dggbal, DGGBAL, (F77_CONST_CHAR_ARG2 (&job, 1), |
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75 n, p_balanced_mat, n, p_balanced_mat2, |
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76 n, ilo, ihi, plscale, prscale, pwork, info |
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77 F77_CHAR_ARG_LEN (1))); |
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78 |
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79 m_balancing_mat = Matrix (n, n, 0.0); |
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80 m_balancing_mat2 = Matrix (n, n, 0.0); |
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81 for (F77_INT i = 0; i < n; i++) |
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82 { |
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83 octave_quit (); |
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84 m_balancing_mat.elem (i, i) = 1.0; |
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85 m_balancing_mat2.elem (i, i) = 1.0; |
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86 } |
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87 |
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88 double *p_balancing_mat = m_balancing_mat.rwdata (); |
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89 double *p_balancing_mat2 = m_balancing_mat2.rwdata (); |
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90 |
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91 // first left |
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92 F77_XFCN (dggbak, DGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1), |
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93 F77_CONST_CHAR_ARG2 ("L", 1), |
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94 n, ilo, ihi, plscale, prscale, |
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95 n, p_balancing_mat, n, info |
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96 F77_CHAR_ARG_LEN (1) |
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97 F77_CHAR_ARG_LEN (1))); |
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98 |
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99 // then right |
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100 F77_XFCN (dggbak, DGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1), |
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101 F77_CONST_CHAR_ARG2 ("R", 1), |
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102 n, ilo, ihi, plscale, prscale, |
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103 n, p_balancing_mat2, n, info |
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104 F77_CHAR_ARG_LEN (1) |
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105 F77_CHAR_ARG_LEN (1))); |
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106 |
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107 return info; |
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108 } |
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109 |
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110 template <> |
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111 OCTAVE_API octave_idx_type |
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112 gepbalance<FloatMatrix>::init (const FloatMatrix& a, const FloatMatrix& b, |
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113 const std::string& balance_job) |
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114 { |
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115 F77_INT n = to_f77_int (a.cols ()); |
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116 |
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117 if (a.rows () != n) |
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118 (*current_liboctave_error_handler) |
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119 ("FloatGEPBALANCE requires square matrix"); |
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120 |
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121 if (a.dims () != b.dims ()) |
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122 err_nonconformant ("FloatGEPBALANCE", |
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123 n, n, b.rows(), b.cols()); |
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124 |
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125 F77_INT info; |
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126 F77_INT ilo; |
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127 F77_INT ihi; |
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128 |
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129 OCTAVE_LOCAL_BUFFER (float, plscale, n); |
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130 OCTAVE_LOCAL_BUFFER (float, prscale, n); |
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131 OCTAVE_LOCAL_BUFFER (float, pwork, 6 * n); |
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132 |
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133 m_balanced_mat = a; |
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134 float *p_balanced_mat = m_balanced_mat.rwdata (); |
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135 m_balanced_mat2 = b; |
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136 float *p_balanced_mat2 = m_balanced_mat2.rwdata (); |
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137 |
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138 char job = balance_job[0]; |
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139 |
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140 F77_XFCN (sggbal, SGGBAL, (F77_CONST_CHAR_ARG2 (&job, 1), |
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141 n, p_balanced_mat, n, p_balanced_mat2, |
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142 n, ilo, ihi, plscale, prscale, pwork, info |
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143 F77_CHAR_ARG_LEN (1))); |
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144 |
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145 m_balancing_mat = FloatMatrix (n, n, 0.0); |
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146 m_balancing_mat2 = FloatMatrix (n, n, 0.0); |
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147 for (F77_INT i = 0; i < n; i++) |
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148 { |
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149 octave_quit (); |
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150 m_balancing_mat.elem (i, i) = 1.0; |
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151 m_balancing_mat2.elem (i, i) = 1.0; |
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152 } |
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153 |
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154 float *p_balancing_mat = m_balancing_mat.rwdata (); |
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155 float *p_balancing_mat2 = m_balancing_mat2.rwdata (); |
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156 |
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157 // first left |
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158 F77_XFCN (sggbak, SGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1), |
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159 F77_CONST_CHAR_ARG2 ("L", 1), |
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160 n, ilo, ihi, plscale, prscale, |
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161 n, p_balancing_mat, n, info |
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162 F77_CHAR_ARG_LEN (1) |
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163 F77_CHAR_ARG_LEN (1))); |
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164 |
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165 // then right |
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166 F77_XFCN (sggbak, SGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1), |
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167 F77_CONST_CHAR_ARG2 ("R", 1), |
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168 n, ilo, ihi, plscale, prscale, |
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169 n, p_balancing_mat2, n, info |
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170 F77_CHAR_ARG_LEN (1) |
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171 F77_CHAR_ARG_LEN (1))); |
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172 |
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173 return info; |
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174 } |
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175 |
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176 template <> |
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177 OCTAVE_API octave_idx_type |
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178 gepbalance<ComplexMatrix>::init (const ComplexMatrix& a, |
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179 const ComplexMatrix& b, |
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180 const std::string& balance_job) |
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181 { |
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182 F77_INT n = to_f77_int (a.cols ()); |
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183 |
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184 if (a.rows () != n) |
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185 (*current_liboctave_error_handler) |
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186 ("ComplexGEPBALANCE requires square matrix"); |
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187 |
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188 if (a.dims () != b.dims ()) |
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189 err_nonconformant ("ComplexGEPBALANCE", |
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190 n, n, b.rows(), b.cols()); |
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191 |
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192 F77_INT info; |
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193 F77_INT ilo; |
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194 F77_INT ihi; |
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195 |
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196 OCTAVE_LOCAL_BUFFER (double, plscale, n); |
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197 OCTAVE_LOCAL_BUFFER (double, prscale, n); |
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198 OCTAVE_LOCAL_BUFFER (double, pwork, 6 * n); |
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199 |
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200 m_balanced_mat = a; |
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201 Complex *p_balanced_mat = m_balanced_mat.rwdata (); |
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202 m_balanced_mat2 = b; |
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203 Complex *p_balanced_mat2 = m_balanced_mat2.rwdata (); |
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204 |
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205 char job = balance_job[0]; |
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206 |
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207 F77_XFCN (zggbal, ZGGBAL, (F77_CONST_CHAR_ARG2 (&job, 1), |
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208 n, F77_DBLE_CMPLX_ARG (p_balanced_mat), |
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209 n, F77_DBLE_CMPLX_ARG (p_balanced_mat2), |
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210 n, ilo, ihi, plscale, prscale, pwork, info |
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211 F77_CHAR_ARG_LEN (1))); |
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212 |
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213 m_balancing_mat = Matrix (n, n, 0.0); |
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214 m_balancing_mat2 = Matrix (n, n, 0.0); |
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215 for (F77_INT i = 0; i < n; i++) |
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216 { |
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217 octave_quit (); |
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218 m_balancing_mat.elem (i, i) = 1.0; |
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219 m_balancing_mat2.elem (i, i) = 1.0; |
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220 } |
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221 |
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222 double *p_balancing_mat = m_balancing_mat.rwdata (); |
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223 double *p_balancing_mat2 = m_balancing_mat2.rwdata (); |
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224 |
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225 // first left |
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226 F77_XFCN (dggbak, DGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1), |
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227 F77_CONST_CHAR_ARG2 ("L", 1), |
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228 n, ilo, ihi, plscale, prscale, |
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229 n, p_balancing_mat, n, info |
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230 F77_CHAR_ARG_LEN (1) |
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231 F77_CHAR_ARG_LEN (1))); |
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232 |
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233 // then right |
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234 F77_XFCN (dggbak, DGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1), |
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235 F77_CONST_CHAR_ARG2 ("R", 1), |
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236 n, ilo, ihi, plscale, prscale, |
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237 n, p_balancing_mat2, n, info |
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238 F77_CHAR_ARG_LEN (1) |
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239 F77_CHAR_ARG_LEN (1))); |
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240 |
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241 return info; |
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242 } |
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243 |
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244 template <> |
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245 OCTAVE_API octave_idx_type |
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246 gepbalance<FloatComplexMatrix>::init (const FloatComplexMatrix& a, |
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247 const FloatComplexMatrix& b, |
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248 const std::string& balance_job) |
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249 { |
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250 F77_INT n = to_f77_int (a.cols ()); |
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251 |
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252 if (a.rows () != n) |
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253 { |
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254 (*current_liboctave_error_handler) |
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255 ("FloatComplexGEPBALANCE requires square matrix"); |
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256 return -1; |
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257 } |
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258 |
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259 if (a.dims () != b.dims ()) |
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260 err_nonconformant ("FloatComplexGEPBALANCE", |
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261 n, n, b.rows(), b.cols()); |
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262 |
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263 F77_INT info; |
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264 F77_INT ilo; |
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265 F77_INT ihi; |
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266 |
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267 OCTAVE_LOCAL_BUFFER (float, plscale, n); |
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268 OCTAVE_LOCAL_BUFFER (float, prscale, n); |
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269 OCTAVE_LOCAL_BUFFER (float, pwork, 6 * n); |
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270 |
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271 m_balanced_mat = a; |
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272 FloatComplex *p_balanced_mat = m_balanced_mat.rwdata (); |
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273 m_balanced_mat2 = b; |
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274 FloatComplex *p_balanced_mat2 = m_balanced_mat2.rwdata (); |
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275 |
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276 char job = balance_job[0]; |
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277 |
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278 F77_XFCN (cggbal, CGGBAL, (F77_CONST_CHAR_ARG2 (&job, 1), |
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279 n, F77_CMPLX_ARG (p_balanced_mat), |
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280 n, F77_CMPLX_ARG (p_balanced_mat2), |
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281 n, ilo, ihi, plscale, prscale, pwork, info |
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282 F77_CHAR_ARG_LEN (1))); |
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283 |
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284 m_balancing_mat = FloatMatrix (n, n, 0.0); |
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285 m_balancing_mat2 = FloatMatrix (n, n, 0.0); |
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286 for (F77_INT i = 0; i < n; i++) |
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287 { |
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288 octave_quit (); |
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289 m_balancing_mat.elem (i, i) = 1.0; |
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290 m_balancing_mat2.elem (i, i) = 1.0; |
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291 } |
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292 |
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293 float *p_balancing_mat = m_balancing_mat.rwdata (); |
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294 float *p_balancing_mat2 = m_balancing_mat2.rwdata (); |
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295 |
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296 // first left |
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297 F77_XFCN (sggbak, SGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1), |
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298 F77_CONST_CHAR_ARG2 ("L", 1), |
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299 n, ilo, ihi, plscale, prscale, |
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300 n, p_balancing_mat, n, info |
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301 F77_CHAR_ARG_LEN (1) |
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302 F77_CHAR_ARG_LEN (1))); |
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303 |
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304 // then right |
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305 F77_XFCN (sggbak, SGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1), |
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306 F77_CONST_CHAR_ARG2 ("R", 1), |
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307 n, ilo, ihi, plscale, prscale, |
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308 n, p_balancing_mat2, n, info |
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309 F77_CHAR_ARG_LEN (1) |
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310 F77_CHAR_ARG_LEN (1))); |
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311 |
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312 return info; |
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313 } |
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314 |
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315 // Instantiations we need. |
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316 |
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317 template class gepbalance<Matrix>; |
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318 |
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319 template class gepbalance<FloatMatrix>; |
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320 |
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321 template class gepbalance<ComplexMatrix>; |
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322 |
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323 template class gepbalance<FloatComplexMatrix>; |
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324 |
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325 OCTAVE_END_NAMESPACE(math) |
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326 OCTAVE_END_NAMESPACE(octave) |