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annotate liboctave/numeric/gepbalance.cc @ 23220:092078913d54

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maint: Merge stable to default.
author John W. Eaton <jwe@octave.org>
date Wed, 22 Feb 2017 12:58:07 -0500
parents ef4d915df748 3ac9f9ecfae5
children d691ed308237
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1 /*
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2
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3 Copyright (C) 1994-2017 John W. Eaton
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 3 of the License, or
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10 (at your option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but
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13 WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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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
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if defined (HAVE_CONFIG_H)
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24 # include "config.h"
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25 #endif
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26
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27 #include <string>
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28 #include <vector>
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29
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30 #include "Array-util.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 "gepbalance.h"
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36 #include "lo-lapack-proto.h"
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37 #include "oct-locbuf.h"
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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 gepbalance<Matrix>::init (const Matrix& a, const Matrix& b,
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46 const std::string& balance_job)
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47 {
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48 F77_INT n = octave::to_f77_int (a.cols ());
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49
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50 if (a.rows () != n)
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51 (*current_liboctave_error_handler) ("GEPBALANCE requires square matrix");
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52
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53 if (a.dims () != b.dims ())
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54 octave::err_nonconformant ("GEPBALANCE", n, n, b.rows(), b.cols());
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55
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56 F77_INT info;
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57 F77_INT ilo;
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58 F77_INT ihi;
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59
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60 OCTAVE_LOCAL_BUFFER (double, plscale, n);
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61 OCTAVE_LOCAL_BUFFER (double, prscale, n);
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62 OCTAVE_LOCAL_BUFFER (double, pwork, 6 * n);
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63
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64 balanced_mat = a;
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65 double *p_balanced_mat = balanced_mat.fortran_vec ();
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66 balanced_mat2 = b;
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67 double *p_balanced_mat2 = balanced_mat2.fortran_vec ();
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68
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69 char job = balance_job[0];
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70
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71 F77_XFCN (dggbal, DGGBAL, (F77_CONST_CHAR_ARG2 (&job, 1),
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72 n, p_balanced_mat, n, p_balanced_mat2,
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73 n, ilo, ihi, plscale, prscale, pwork, info
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74 F77_CHAR_ARG_LEN (1)));
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75
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76 balancing_mat = Matrix (n, n, 0.0);
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77 balancing_mat2 = Matrix (n, n, 0.0);
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78 for (F77_INT i = 0; i < n; i++)
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79 {
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80 octave_quit ();
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81 balancing_mat.elem (i ,i) = 1.0;
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82 balancing_mat2.elem (i ,i) = 1.0;
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83 }
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84
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85 double *p_balancing_mat = balancing_mat.fortran_vec ();
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86 double *p_balancing_mat2 = balancing_mat2.fortran_vec ();
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87
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88 // first left
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89 F77_XFCN (dggbak, DGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
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90 F77_CONST_CHAR_ARG2 ("L", 1),
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91 n, ilo, ihi, plscale, prscale,
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92 n, p_balancing_mat, n, info
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93 F77_CHAR_ARG_LEN (1)
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94 F77_CHAR_ARG_LEN (1)));
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95
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96 // then right
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97 F77_XFCN (dggbak, DGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
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98 F77_CONST_CHAR_ARG2 ("R", 1),
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99 n, ilo, ihi, plscale, prscale,
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100 n, p_balancing_mat2, n, info
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101 F77_CHAR_ARG_LEN (1)
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102 F77_CHAR_ARG_LEN (1)));
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103
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104 return info;
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105 }
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106
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107 template <>
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108 octave_idx_type
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109 gepbalance<FloatMatrix>::init (const FloatMatrix& a, const FloatMatrix& b,
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110 const std::string& balance_job)
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111 {
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112 F77_INT n = octave::to_f77_int (a.cols ());
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113
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114 if (a.rows () != n)
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115 (*current_liboctave_error_handler)
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116 ("FloatGEPBALANCE requires square matrix");
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117
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118 if (a.dims () != b.dims ())
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119 octave::err_nonconformant ("FloatGEPBALANCE", n, n, b.rows(), b.cols());
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120
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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 OCTAVE_LOCAL_BUFFER (float, plscale, n);
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126 OCTAVE_LOCAL_BUFFER (float, prscale, n);
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127 OCTAVE_LOCAL_BUFFER (float, pwork, 6 * n);
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128
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129 balanced_mat = a;
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130 float *p_balanced_mat = balanced_mat.fortran_vec ();
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131 balanced_mat2 = b;
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132 float *p_balanced_mat2 = balanced_mat2.fortran_vec ();
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133
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134 char job = balance_job[0];
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135
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136 F77_XFCN (sggbal, SGGBAL, (F77_CONST_CHAR_ARG2 (&job, 1),
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137 n, p_balanced_mat, n, p_balanced_mat2,
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138 n, ilo, ihi, plscale, prscale, pwork, info
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139 F77_CHAR_ARG_LEN (1)));
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140
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141 balancing_mat = FloatMatrix (n, n, 0.0);
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142 balancing_mat2 = FloatMatrix (n, n, 0.0);
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143 for (F77_INT i = 0; i < n; i++)
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144 {
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145 octave_quit ();
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146 balancing_mat.elem (i ,i) = 1.0;
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147 balancing_mat2.elem (i ,i) = 1.0;
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148 }
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149
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150 float *p_balancing_mat = balancing_mat.fortran_vec ();
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151 float *p_balancing_mat2 = balancing_mat2.fortran_vec ();
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152
22329
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153 // first left
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154 F77_XFCN (sggbak, SGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
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155 F77_CONST_CHAR_ARG2 ("L", 1),
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156 n, ilo, ihi, plscale, prscale,
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157 n, p_balancing_mat, n, info
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158 F77_CHAR_ARG_LEN (1)
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159 F77_CHAR_ARG_LEN (1)));
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160
22329
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161 // then right
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162 F77_XFCN (sggbak, SGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
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163 F77_CONST_CHAR_ARG2 ("R", 1),
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164 n, ilo, ihi, plscale, prscale,
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165 n, p_balancing_mat2, n, info
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166 F77_CHAR_ARG_LEN (1)
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167 F77_CHAR_ARG_LEN (1)));
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168
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169 return info;
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170 }
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171
22329
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172 template <>
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173 octave_idx_type
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174 gepbalance<ComplexMatrix>::init (const ComplexMatrix& a,
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175 const ComplexMatrix& b,
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176 const std::string& balance_job)
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177 {
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178 F77_INT n = octave::to_f77_int (a.cols ());
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179
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180 if (a.rows () != n)
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181 (*current_liboctave_error_handler)
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182 ("ComplexGEPBALANCE requires square matrix");
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183
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184 if (a.dims () != b.dims ())
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185 octave::err_nonconformant ("ComplexGEPBALANCE", n, n, b.rows(), b.cols());
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186
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187 F77_INT info;
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188 F77_INT ilo;
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189 F77_INT ihi;
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190
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191 OCTAVE_LOCAL_BUFFER (double, plscale, n);
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192 OCTAVE_LOCAL_BUFFER (double, prscale, n);
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193 OCTAVE_LOCAL_BUFFER (double, pwork, 6 * n);
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194
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195 balanced_mat = a;
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196 Complex *p_balanced_mat = balanced_mat.fortran_vec ();
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197 balanced_mat2 = b;
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198 Complex *p_balanced_mat2 = balanced_mat2.fortran_vec ();
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199
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200 char job = balance_job[0];
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201
22329
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202 F77_XFCN (zggbal, ZGGBAL, (F77_CONST_CHAR_ARG2 (&job, 1),
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203 n, F77_DBLE_CMPLX_ARG (p_balanced_mat), n, F77_DBLE_CMPLX_ARG (p_balanced_mat2),
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204 n, ilo, ihi, plscale, prscale, pwork, info
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diff changeset
205 F77_CHAR_ARG_LEN (1)));
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206
22329
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207 balancing_mat = Matrix (n, n, 0.0);
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208 balancing_mat2 = Matrix (n, n, 0.0);
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209 for (F77_INT i = 0; i < n; i++)
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210 {
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211 octave_quit ();
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diff changeset
212 balancing_mat.elem (i ,i) = 1.0;
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diff changeset
213 balancing_mat2.elem (i ,i) = 1.0;
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214 }
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215
22329
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216 double *p_balancing_mat = balancing_mat.fortran_vec ();
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217 double *p_balancing_mat2 = balancing_mat2.fortran_vec ();
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218
22329
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diff changeset
219 // first left
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220 F77_XFCN (dggbak, DGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
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diff changeset
221 F77_CONST_CHAR_ARG2 ("L", 1),
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diff changeset
222 n, ilo, ihi, plscale, prscale,
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diff changeset
223 n, p_balancing_mat, n, info
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diff changeset
224 F77_CHAR_ARG_LEN (1)
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diff changeset
225 F77_CHAR_ARG_LEN (1)));
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226
22329
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diff changeset
227 // then right
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diff changeset
228 F77_XFCN (dggbak, DGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
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diff changeset
229 F77_CONST_CHAR_ARG2 ("R", 1),
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diff changeset
230 n, ilo, ihi, plscale, prscale,
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diff changeset
231 n, p_balancing_mat2, n, info
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diff changeset
232 F77_CHAR_ARG_LEN (1)
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diff changeset
233 F77_CHAR_ARG_LEN (1)));
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234
22329
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diff changeset
235 return info;
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236 }
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237
22329
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diff changeset
238 template <>
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diff changeset
239 octave_idx_type
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diff changeset
240 gepbalance<FloatComplexMatrix>::init (const FloatComplexMatrix& a,
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diff changeset
241 const FloatComplexMatrix& b,
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diff changeset
242 const std::string& balance_job)
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diff changeset
243 {
22988
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244 F77_INT n = octave::to_f77_int (a.cols ());
22329
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diff changeset
245
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diff changeset
246 if (a.rows () != n)
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diff changeset
247 {
7f3c7a8bd131 maint: Indent namespaces in liboctave/numeric files.
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diff changeset
248 (*current_liboctave_error_handler)
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diff changeset
249 ("FloatComplexGEPBALANCE requires square matrix");
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diff changeset
250 return -1;
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diff changeset
251 }
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diff changeset
252
22329
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diff changeset
253 if (a.dims () != b.dims ())
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diff changeset
254 octave::err_nonconformant ("FloatComplexGEPBALANCE", n, n, b.rows(), b.cols());
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diff changeset
255
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256 F77_INT info;
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257 F77_INT ilo;
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258 F77_INT ihi;
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259
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260 OCTAVE_LOCAL_BUFFER (float, plscale, n);
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261 OCTAVE_LOCAL_BUFFER (float, prscale, n);
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262 OCTAVE_LOCAL_BUFFER (float, pwork, 6 * n);
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263
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264 balanced_mat = a;
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265 FloatComplex *p_balanced_mat = balanced_mat.fortran_vec ();
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266 balanced_mat2 = b;
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267 FloatComplex *p_balanced_mat2 = balanced_mat2.fortran_vec ();
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268
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269 char job = balance_job[0];
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270
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271 F77_XFCN (cggbal, CGGBAL, (F77_CONST_CHAR_ARG2 (&job, 1),
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272 n, F77_CMPLX_ARG (p_balanced_mat), n, F77_CMPLX_ARG (p_balanced_mat2),
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273 n, ilo, ihi, plscale, prscale, pwork, info
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274 F77_CHAR_ARG_LEN (1)));
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275
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276 balancing_mat = FloatMatrix (n, n, 0.0);
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277 balancing_mat2 = FloatMatrix (n, n, 0.0);
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278 for (F77_INT i = 0; i < n; i++)
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279 {
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280 octave_quit ();
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281 balancing_mat.elem (i ,i) = 1.0;
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282 balancing_mat2.elem (i ,i) = 1.0;
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283 }
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284
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285 float *p_balancing_mat = balancing_mat.fortran_vec ();
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286 float *p_balancing_mat2 = balancing_mat2.fortran_vec ();
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287
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288 // first left
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289 F77_XFCN (sggbak, SGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
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290 F77_CONST_CHAR_ARG2 ("L", 1),
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291 n, ilo, ihi, plscale, prscale,
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292 n, p_balancing_mat, n, info
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293 F77_CHAR_ARG_LEN (1)
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294 F77_CHAR_ARG_LEN (1)));
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295
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296 // then right
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297 F77_XFCN (sggbak, SGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
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298 F77_CONST_CHAR_ARG2 ("R", 1),
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299 n, ilo, ihi, plscale, prscale,
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300 n, p_balancing_mat2, 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 return info;
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305 }
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306
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307 // Instantiations we need.
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308
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309 template class gepbalance<Matrix>;
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310
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311 template class gepbalance<FloatMatrix>;
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312
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313 template class gepbalance<ComplexMatrix>;
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314
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315 template class gepbalance<FloatComplexMatrix>;
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316 }
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317 }