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annotate liboctave/floatLU.cc @ 7789:82be108cc558

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First attempt at single precision tyeps * * * corrections to qrupdate single precision routines * * * prefer demotion to single over promotion to double * * * Add single precision support to log2 function * * * Trivial PROJECT file update * * * Cache optimized hermitian/transpose methods * * * Add tests for tranpose/hermitian and ChangeLog entry for new transpose code
author David Bateman <dbateman@free.fr>
date Sun, 27 Apr 2008 22:34:17 +0200
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children 5420b8cf011a
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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 "floatLU.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 <FloatMatrix, float, FloatMatrix, float>;
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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 (sgetrf, SGETRF) (const octave_idx_type&, const octave_idx_type&, float*,
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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 FloatLU::FloatLU (const FloatMatrix& 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 float *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 (sgetrf, SGETRF, (a_nr, a_nc, tmp_data, a_nr, pipvt, info));
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63
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64 ipvt -= static_cast<octave_idx_type> (1);
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65 }
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66
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67 /*
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68 ;;; Local Variables: ***
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69 ;;; mode: C++ ***
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70 ;;; End: ***
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71 */