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fix typo in Array-f.cc
author Jaroslav Hajek <highegg@gmail.com>
date Mon, 09 Feb 2009 21:51:31 +0100
parents a5e080076778
children 4c0cdbe0acca
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1 /*
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2
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3 Copyright (C) 1994, 1995, 1996, 1997, 2000, 2002, 2003, 2004, 2005,
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4 2007 John W. Eaton
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5 Copyright (C) 2008 Jaroslav Hajek
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6
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7 This file is part of Octave.
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8
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9 Octave is free software; you can redistribute it and/or modify it
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10 under the terms of the GNU General Public License as published by the
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11 Free Software Foundation; either version 3 of the License, or (at your
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12 option) any later version.
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13
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14 Octave is distributed in the hope that it will be useful, but WITHOUT
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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17 for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with Octave; see the file COPYING. If not, see
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21 <http://www.gnu.org/licenses/>.
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22
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23 */
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24
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25 #ifdef HAVE_CONFIG_H
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26 #include <config.h>
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27 #endif
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28
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29 #include <string>
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30
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31 #include "floatAEPBAL.h"
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32 #include "f77-fcn.h"
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33
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34 extern "C"
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35 {
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36 F77_RET_T
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37 F77_FUNC (sgebal, SGEBAL) (F77_CONST_CHAR_ARG_DECL,
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38 const octave_idx_type&, float*, const octave_idx_type&, octave_idx_type&,
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39 octave_idx_type&, float*, octave_idx_type&
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40 F77_CHAR_ARG_LEN_DECL);
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41
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42 F77_RET_T
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43 F77_FUNC (sgebak, SGEBAK) (F77_CONST_CHAR_ARG_DECL,
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44 F77_CONST_CHAR_ARG_DECL,
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45 const octave_idx_type&, const octave_idx_type&, const octave_idx_type&,
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46 const float*, const octave_idx_type&, float*,
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47 const octave_idx_type&, octave_idx_type&
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48 F77_CHAR_ARG_LEN_DECL
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49 F77_CHAR_ARG_LEN_DECL);
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50 }
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51
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52 FloatAEPBALANCE::FloatAEPBALANCE (const FloatMatrix& a,
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53 bool noperm, bool noscal)
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54 : base_aepbal<FloatMatrix, FloatColumnVector> ()
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55 {
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56 octave_idx_type n = a.cols ();
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57
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58 if (a.rows () != n)
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59 {
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60 (*current_liboctave_error_handler) ("AEPBALANCE requires square matrix");
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61 return;
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62 }
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63
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64 octave_idx_type info;
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65
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66 scale = FloatColumnVector (n);
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67 float *pscale = scale.fortran_vec ();
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68
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69 balanced_mat = a;
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70 float *p_balanced_mat = balanced_mat.fortran_vec ();
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71
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72 job = noperm ? (noscal ? 'N' : 'S') : (noscal ? 'P' : 'B');
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73
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74 F77_XFCN (sgebal, SGEBAL, (F77_CONST_CHAR_ARG2 (&job, 1),
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75 n, p_balanced_mat, n, ilo, ihi, pscale, info
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76 F77_CHAR_ARG_LEN (1)));
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77 }
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78
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79 FloatMatrix
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80 FloatAEPBALANCE::balancing_matrix (void) const
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81 {
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82 octave_idx_type n = balanced_mat.rows ();
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83 FloatMatrix balancing_mat (n, n, 0.0);
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84 for (octave_idx_type i = 0; i < n; i++)
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85 balancing_mat.elem (i ,i) = 1.0;
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86
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87 float *p_balancing_mat = balancing_mat.fortran_vec ();
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88 const float *pscale = scale.fortran_vec ();
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89
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90 octave_idx_type info;
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91
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92 char side = 'R';
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93
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94 F77_XFCN (sgebak, SGEBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
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95 F77_CONST_CHAR_ARG2 (&side, 1),
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96 n, ilo, ihi, pscale, n,
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97 p_balancing_mat, n, info
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98 F77_CHAR_ARG_LEN (1)
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99 F77_CHAR_ARG_LEN (1)));
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100
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101 return balancing_mat;
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102 }
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103
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104 /*
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105 ;;; Local Variables: ***
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106 ;;; mode: C++ ***
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107 ;;; End: ***
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108 */