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1 /* |
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2 |
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3 Copyright (C) 1994, 1995, 1996, 1997, 1999, 2002, 2003, 2004, 2005, |
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4 2007 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 3 of the License, or (at your |
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11 option) any later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, see |
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20 <http://www.gnu.org/licenses/>. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include "dbleLU.h" |
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29 #include "f77-fcn.h" |
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30 #include "lo-error.h" |
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31 |
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32 // Instantiate the base LU class for the types we need. |
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33 |
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34 #include <base-lu.h> |
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35 #include <base-lu.cc> |
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36 |
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37 template class base_lu <Matrix, double, Matrix, double>; |
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38 |
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39 // Define the constructor for this particular derivation. |
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40 |
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41 extern "C" |
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42 { |
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43 F77_RET_T |
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44 F77_FUNC (dgetrf, DGETRF) (const octave_idx_type&, const octave_idx_type&, double*, |
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45 const octave_idx_type&, octave_idx_type*, octave_idx_type&); |
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46 } |
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47 |
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48 LU::LU (const Matrix& a) |
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49 { |
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50 octave_idx_type a_nr = a.rows (); |
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51 octave_idx_type a_nc = a.cols (); |
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52 octave_idx_type mn = (a_nr < a_nc ? a_nr : a_nc); |
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53 |
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54 ipvt.resize (mn); |
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55 octave_idx_type *pipvt = ipvt.fortran_vec (); |
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56 |
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57 a_fact = a; |
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58 double *tmp_data = a_fact.fortran_vec (); |
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59 |
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60 octave_idx_type info = 0; |
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61 |
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62 F77_XFCN (dgetrf, DGETRF, (a_nr, a_nc, tmp_data, a_nr, pipvt, info)); |
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63 |
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64 if (f77_exception_encountered) |
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65 (*current_liboctave_error_handler) ("unrecoverable error in dgetrf"); |
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66 else |
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67 ipvt -= static_cast<octave_idx_type> (1); |
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68 } |
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69 |
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70 /* |
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71 ;;; Local Variables: *** |
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72 ;;; mode: C++ *** |
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73 ;;; End: *** |
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74 */ |
