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maint: Update copyright dates in all source files.
author John W. Eaton <jwe@octave.org>
date Fri, 30 Mar 2018 09:19:05 -0400
parents 46440078d73b
children 078b795c5219
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1 /*
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2
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3 Copyright (C) 2009-2018 Jason Riedy
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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 <https://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 "errwarn.h"
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28 #include "ovl.h"
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29 #include "ov.h"
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30 #include "ov-typeinfo.h"
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31 #include "ops.h"
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32
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33 #include "ov-perm.h"
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34 #include "ov-re-sparse.h"
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35
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36 // permutation matrix by sparse matrix ops
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37
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38 DEFBINOP (mul_pm_sm, perm_matrix, sparse_matrix)
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39 {
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40 const octave_perm_matrix& v1 = dynamic_cast<const octave_perm_matrix&> (a1);
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41 const octave_sparse_matrix& v2 = dynamic_cast<const octave_sparse_matrix&> (a2);
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42
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43 if (v2.rows () == 1 && v2.columns () == 1)
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44 {
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45 double d = v2.scalar_value ();
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46
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47 return octave_value (v1.sparse_matrix_value () * d);
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48 }
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49 else if (v1.rows () == 1 && v1.columns () == 1)
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50 return octave_value (v2.sparse_matrix_value ());
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51 else
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52 return v1.perm_matrix_value () * v2.sparse_matrix_value ();
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53 }
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54
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55 DEFBINOP (ldiv_pm_sm, perm_matrix, sparse_matrix)
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56 {
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57 const octave_perm_matrix& v1 = dynamic_cast<const octave_perm_matrix&> (a1);
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58 const octave_sparse_matrix& v2 = dynamic_cast<const octave_sparse_matrix&> (a2);
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59
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60 return v1.perm_matrix_value ().inverse () * v2.sparse_matrix_value ();
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61 }
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62
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63 // sparse matrix by diagonal matrix ops
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64
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65 DEFBINOP (mul_sm_pm, sparse_matrix, perm_matrix)
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66 {
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67 const octave_sparse_matrix& v1 = dynamic_cast<const octave_sparse_matrix&> (a1);
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68 const octave_perm_matrix& v2 = dynamic_cast<const octave_perm_matrix&> (a2);
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69
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70 if (v1.rows () == 1 && v1.columns () == 1)
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71 {
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72 double d = v1.scalar_value ();
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73
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74 return octave_value (d * v2.sparse_matrix_value ());
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75 }
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76 else if (v2.rows () == 1 && v2.columns () == 1)
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77 return octave_value (v1.sparse_matrix_value ());
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78 else
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79 return v1.sparse_matrix_value () * v2.perm_matrix_value ();
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80 }
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81
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82 DEFBINOP (div_sm_pm, sparse_matrix, perm_matrix)
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83 {
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84 const octave_sparse_matrix& v1 = dynamic_cast<const octave_sparse_matrix&> (a1);
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85 const octave_perm_matrix& v2 = dynamic_cast<const octave_perm_matrix&> (a2);
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86
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87 return v1.sparse_matrix_value () * v2.perm_matrix_value ().inverse ();
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88 }
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89
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90 void
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91 install_pm_sm_ops (octave::type_info& ti)
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92 {
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93 INSTALL_BINOP_TI (ti, op_mul, octave_perm_matrix, octave_sparse_matrix,
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94 mul_pm_sm);
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95 INSTALL_BINOP_TI (ti, op_ldiv, octave_perm_matrix, octave_sparse_matrix,
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96 ldiv_pm_sm);
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97 INSTALL_BINOP_TI (ti, op_mul, octave_sparse_matrix, octave_perm_matrix,
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98 mul_sm_pm);
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99 INSTALL_BINOP_TI (ti, op_div, octave_sparse_matrix, octave_perm_matrix,
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100 div_sm_pm);
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101 }