Mercurial > hg > octave-lyh
annotate liboctave/MArray.h @ 8934:c2099a4d12ea
partially optimize accumarray
| author | Jaroslav Hajek <highegg@gmail.com> |
|---|---|
| date | Mon, 09 Mar 2009 10:59:19 +0100 |
| parents | eb63fbe60fab |
| children | 66970dd627f6 |
| rev | line source |
|---|---|
| 1993 | 1 // Template array classes with like-type math ops |
| 237 | 2 /* |
| 3 | |
| 7017 | 4 Copyright (C) 1993, 1994, 1995, 1996, 1997, 2000, 2002, 2003, 2004, |
| 8920 | 5 2005, 2006, 2007, 2008, 2009 John W. Eaton |
| 237 | 6 |
| 7 This file is part of Octave. | |
| 8 | |
| 9 Octave is free software; you can redistribute it and/or modify it | |
| 10 under the terms of the GNU General Public License as published by the | |
| 7016 | 11 Free Software Foundation; either version 3 of the License, or (at your |
| 12 option) any later version. | |
| 237 | 13 |
| 14 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 17 for more details. | |
| 18 | |
| 19 You should have received a copy of the GNU General Public License | |
| 7016 | 20 along with Octave; see the file COPYING. If not, see |
| 21 <http://www.gnu.org/licenses/>. | |
| 237 | 22 |
| 23 */ | |
| 24 | |
| 382 | 25 #if !defined (octave_MArray_h) |
| 26 #define octave_MArray_h 1 | |
| 27 | |
| 237 | 28 #include "Array.h" |
| 29 | |
| 3573 | 30 // One dimensional array with math ops. |
| 3107 | 31 |
| 3573 | 32 // But first, some preprocessor abuse... |
| 3107 | 33 |
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34 #include "MArray-decl.h" |
| 3107 | 35 |
| 6708 | 36 MARRAY_OPS_FORWARD_DECLS (MArray, ) |
| 237 | 37 |
| 38 template <class T> | |
| 3585 | 39 class |
| 40 MArray : public Array<T> | |
| 237 | 41 { |
| 42 protected: | |
| 43 | |
| 5275 | 44 MArray (T *d, octave_idx_type l) : Array<T> (d, l) { } |
| 237 | 45 |
| 46 public: | |
| 47 | |
| 48 MArray (void) : Array<T> () { } | |
| 3585 | 49 |
| 5275 | 50 explicit MArray (octave_idx_type n) : Array<T> (n) { } |
| 3585 | 51 |
| 5275 | 52 MArray (octave_idx_type n, const T& val) : Array<T> (n, val) { } |
| 3585 | 53 |
| 54 MArray (const MArray<T>& a) : Array<T> (a) { } | |
| 55 | |
| 3419 | 56 MArray (const Array<T>& a) : Array<T> (a) { } |
| 237 | 57 |
| 1230 | 58 ~MArray (void) { } |
| 59 | |
| 237 | 60 MArray<T>& operator = (const MArray<T>& a) |
| 1213 | 61 { |
| 62 Array<T>::operator = (a); | |
| 63 return *this; | |
| 64 } | |
| 3573 | 65 |
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66 MArray<T> transpose (void) const { return Array<T>::transpose (); } |
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67 MArray<T> hermitian (T (*fcn) (const T&) = 0) const { return Array<T>::hermitian (fcn); } |
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68 |
| 5602 | 69 octave_idx_type nnz (void) const |
| 70 { | |
| 71 octave_idx_type retval = 0; | |
| 72 | |
| 73 const T *d = this->data (); | |
| 74 | |
| 75 octave_idx_type nel = this->numel (); | |
| 76 | |
| 77 for (octave_idx_type i = 0; i < nel; i++) | |
| 78 { | |
| 79 if (d[i] != T ()) | |
| 80 retval++; | |
| 81 } | |
| 82 | |
| 83 return retval; | |
| 84 } | |
| 85 | |
| 6508 | 86 double norm (double p) const; |
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87 float norm (float p) const; |
| 5602 | 88 |
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89 template <class U, class F> |
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90 MArray<U> map (F fcn) const |
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91 { |
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92 return Array<T>::template map<U> (fcn); |
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93 } |
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94 |
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95 // Performs indexed accumulative addition. |
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96 |
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97 void idx_add (const idx_vector& idx, T val); |
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parents:
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98 |
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99 void idx_add (const idx_vector& idx, const MArray<T>& vals); |
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c2099a4d12ea
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Jaroslav Hajek <highegg@gmail.com>
parents:
8920
diff
changeset
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100 |
| 3573 | 101 // Currently, the OPS functions don't need to be friends, but that |
| 102 // may change. | |
| 103 | |
| 3610 | 104 // MARRAY_OPS_FRIEND_DECLS (MArray) |
| 237 | 105 }; |
| 106 | |
| 107 #endif | |
| 108 | |
| 109 /* | |
| 110 ;;; Local Variables: *** | |
| 111 ;;; mode: C++ *** | |
| 112 ;;; End: *** | |
| 113 */ |