Mercurial > jwe > octave
annotate liboctave/numeric/floatSCHUR.cc @ 21136:7cac4e7458f2
maint: clean up code around calls to current_liboctave_error_handler.
Remove statements after call to handler that are no longer reachable.
Place input validation first and immediately call handler if necessary.
Change if/error_handler/else to if/error_handler and re-indent code.
* Array-util.cc, Array.cc, CColVector.cc, CDiagMatrix.cc, CMatrix.cc,
CNDArray.cc, CRowVector.cc, CSparse.cc, DiagArray2.cc, MArray.cc,
PermMatrix.cc, Sparse.cc, Sparse.h, chMatrix.cc, chNDArray.cc, dColVector.cc,
dDiagMatrix.cc, dMatrix.cc, dNDArray.cc, dRowVector.cc, dSparse.cc,
fCColVector.cc, fCDiagMatrix.cc, fCMatrix.cc, fCNDArray.cc, fCRowVector.cc,
fColVector.cc, fDiagMatrix.cc, fMatrix.cc, fNDArray.cc, fRowVector.cc,
idx-vector.cc, CmplxAEPBAL.cc, CmplxCHOL.cc, CmplxGEPBAL.cc, CmplxHESS.cc,
CmplxLU.cc, CmplxQR.cc, CmplxSCHUR.cc, CmplxSVD.cc, DASPK.cc, EIG.cc, LSODE.cc,
Quad.cc, SparseCmplxCHOL.cc, SparseCmplxLU.cc, SparseCmplxQR.cc, SparseQR.cc,
SparsedbleCHOL.cc, SparsedbleLU.cc, base-lu.cc, bsxfun-defs.cc, dbleAEPBAL.cc,
dbleCHOL.cc, dbleGEPBAL.cc, dbleHESS.cc, dbleLU.cc, dbleQR.cc, dbleSCHUR.cc,
dbleSVD.cc, eigs-base.cc, fCmplxAEPBAL.cc, fCmplxCHOL.cc, fCmplxLU.cc,
fCmplxQR.cc, fCmplxSCHUR.cc, fEIG.cc, floatAEPBAL.cc, floatCHOL.cc,
floatGEPBAL.cc, floatHESS.cc, floatLU.cc, floatQR.cc, floatSCHUR.cc,
floatSVD.cc, lo-specfun.cc, oct-fftw.cc, oct-rand.cc, oct-spparms.cc,
sparse-base-chol.cc, sparse-dmsolve.cc, file-ops.cc, lo-sysdep.cc,
mach-info.cc, oct-env.cc, oct-syscalls.cc, cmd-edit.cc, cmd-hist.cc,
data-conv.cc, lo-ieee.cc, lo-regexp.cc, oct-base64.cc, oct-shlib.cc,
pathsearch.cc, singleton-cleanup.cc, sparse-util.cc, unwind-prot.cc:
Remove statements after call to handler that are no longer reachable.
Place input validation first and immediately call handler if necessary.
Change if/error_handler/else to if/error_handler and re-indent code.
author | Rik <rik@octave.org> |
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date | Sat, 23 Jan 2016 13:52:03 -0800 |
parents | 4197fc428c7d |
children | f7121e111991 |
rev | line source |
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1 /* |
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2 |
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3 Copyright (C) 1994-2015 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 the |
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9 Free Software Foundation; either version 3 of the License, or (at your |
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10 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 WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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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 |
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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 #ifdef 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 <iostream> |
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28 |
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29 #include "floatSCHUR.h" |
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30 #include "f77-fcn.h" |
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31 #include "lo-error.h" |
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32 |
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33 extern "C" |
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34 { |
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35 F77_RET_T |
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36 F77_FUNC (sgeesx, SGEESX) (F77_CONST_CHAR_ARG_DECL, |
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37 F77_CONST_CHAR_ARG_DECL, |
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38 FloatSCHUR::select_function, |
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39 F77_CONST_CHAR_ARG_DECL, |
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41 const octave_idx_type&, octave_idx_type&, | |
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42 float*, float*, float*, const octave_idx_type&, |
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43 float&, float&, float*, const octave_idx_type&, |
11495 | 44 octave_idx_type*, const octave_idx_type&, |
45 octave_idx_type*, octave_idx_type& | |
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46 F77_CHAR_ARG_LEN_DECL |
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47 F77_CHAR_ARG_LEN_DECL |
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48 F77_CHAR_ARG_LEN_DECL); |
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49 } |
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50 |
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51 static octave_idx_type |
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52 select_ana (const float& a, const float&) |
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53 { |
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54 return (a < 0.0); |
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55 } |
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56 |
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57 static octave_idx_type |
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58 select_dig (const float& a, const float& b) |
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59 { |
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60 return (hypot (a, b) < 1.0); |
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61 } |
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62 |
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63 octave_idx_type |
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64 FloatSCHUR::init (const FloatMatrix& a, const std::string& ord, |
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65 bool calc_unitary) |
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66 { |
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67 octave_idx_type a_nr = a.rows (); |
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68 octave_idx_type a_nc = a.cols (); |
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69 |
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70 if (a_nr != a_nc) |
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71 (*current_liboctave_error_handler) ("FloatSCHUR requires square matrix"); |
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72 |
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73 if (a_nr == 0) |
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74 { |
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75 schur_mat.clear (); |
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76 unitary_mat.clear (); |
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77 return 0; |
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78 } |
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79 |
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80 // Workspace requirements may need to be fixed if any of the |
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81 // following change. |
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82 |
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83 char jobvs; |
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84 char sense = 'N'; |
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85 char sort = 'N'; |
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86 |
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87 if (calc_unitary) |
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88 jobvs = 'V'; |
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89 else |
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90 jobvs = 'N'; |
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91 |
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92 char ord_char = ord.empty () ? 'U' : ord[0]; |
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93 |
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94 if (ord_char == 'A' || ord_char == 'D' || ord_char == 'a' || ord_char == 'd') |
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95 sort = 'S'; |
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96 |
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97 if (ord_char == 'A' || ord_char == 'a') |
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98 selector = select_ana; |
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99 else if (ord_char == 'D' || ord_char == 'd') |
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100 selector = select_dig; |
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101 else |
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102 selector = 0; |
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103 |
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104 octave_idx_type n = a_nc; |
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105 octave_idx_type lwork = 8 * n; |
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106 octave_idx_type liwork = 1; |
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107 octave_idx_type info; |
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108 octave_idx_type sdim; |
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109 float rconde; |
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110 float rcondv; |
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111 |
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112 schur_mat = a; |
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113 |
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114 if (calc_unitary) |
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115 unitary_mat.clear (n, n); |
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116 |
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117 float *s = schur_mat.fortran_vec (); |
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118 float *q = unitary_mat.fortran_vec (); |
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119 |
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120 Array<float> wr (dim_vector (n, 1)); |
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121 float *pwr = wr.fortran_vec (); |
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122 |
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123 Array<float> wi (dim_vector (n, 1)); |
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124 float *pwi = wi.fortran_vec (); |
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125 |
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126 Array<float> work (dim_vector (lwork, 1)); |
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127 float *pwork = work.fortran_vec (); |
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128 |
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129 // BWORK is not referenced for the non-ordered Schur routine. |
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130 octave_idx_type ntmp = (ord_char == 'N' || ord_char == 'n') ? 0 : n; |
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131 Array<octave_idx_type> bwork (dim_vector (ntmp, 1)); |
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132 octave_idx_type *pbwork = bwork.fortran_vec (); |
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133 |
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134 Array<octave_idx_type> iwork (dim_vector (liwork, 1)); |
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135 octave_idx_type *piwork = iwork.fortran_vec (); |
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136 |
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137 F77_XFCN (sgeesx, SGEESX, (F77_CONST_CHAR_ARG2 (&jobvs, 1), |
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138 F77_CONST_CHAR_ARG2 (&sort, 1), |
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139 selector, |
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140 F77_CONST_CHAR_ARG2 (&sense, 1), |
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141 n, s, n, sdim, pwr, pwi, q, n, rconde, rcondv, |
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142 pwork, lwork, piwork, liwork, pbwork, info |
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143 F77_CHAR_ARG_LEN (1) |
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144 F77_CHAR_ARG_LEN (1) |
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145 F77_CHAR_ARG_LEN (1))); |
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146 |
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147 return info; |
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148 } |
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149 |
10822 | 150 FloatSCHUR::FloatSCHUR (const FloatMatrix& s, const FloatMatrix& u) |
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151 : schur_mat (s), unitary_mat (u), selector (0) |
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153 octave_idx_type n = s.rows (); | |
154 if (s.columns () != n || u.rows () != n || u.columns () != n) | |
155 (*current_liboctave_error_handler) | |
156 ("schur: inconsistent matrix dimensions"); | |
157 } | |
158 | |
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159 std::ostream& |
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160 operator << (std::ostream& os, const FloatSCHUR& a) |
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161 { |
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162 os << a.schur_matrix () << "\n"; |
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163 os << a.unitary_matrix () << "\n"; |
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164 |
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165 return os; |
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166 } |