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comparison liboctave/fDiagMatrix.h @ 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 8b1a2555c4e2
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7788:45f5faba05a2 7789:82be108cc558
1 /*
2
3 Copyright (C) 1994, 1995, 1996, 1997, 2000, 2002, 2004, 2005, 2006,
4 2007 John W. Eaton
5
6 This file is part of Octave.
7
8 Octave is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 3 of the License, or (at your
11 option) any later version.
12
13 Octave is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with Octave; see the file COPYING. If not, see
20 <http://www.gnu.org/licenses/>.
21
22 */
23
24 #if !defined (octave_FloatDiagMatrix_h)
25 #define octave_FloatDiagMatrix_h 1
26
27 #include "MDiagArray2.h"
28
29 #include "fRowVector.h"
30 #include "fColVector.h"
31
32 #include "mx-defs.h"
33
34 class
35 OCTAVE_API
36 FloatDiagMatrix : public MDiagArray2<float>
37 {
38 friend class FloatSVD;
39 friend class FloatComplexSVD;
40
41 public:
42
43 FloatDiagMatrix (void) : MDiagArray2<float> () { }
44
45 FloatDiagMatrix (octave_idx_type r, octave_idx_type c) : MDiagArray2<float> (r, c) { }
46
47 FloatDiagMatrix (octave_idx_type r, octave_idx_type c, float val) : MDiagArray2<float> (r, c, val) { }
48
49 FloatDiagMatrix (const FloatDiagMatrix& a) : MDiagArray2<float> (a) { }
50
51 FloatDiagMatrix (const MDiagArray2<float>& a) : MDiagArray2<float> (a) { }
52
53 explicit FloatDiagMatrix (const FloatRowVector& a) : MDiagArray2<float> (a) { }
54
55 explicit FloatDiagMatrix (const FloatColumnVector& a) : MDiagArray2<float> (a) { }
56
57 FloatDiagMatrix& operator = (const FloatDiagMatrix& a)
58 {
59 MDiagArray2<float>::operator = (a);
60 return *this;
61 }
62
63 bool operator == (const FloatDiagMatrix& a) const;
64 bool operator != (const FloatDiagMatrix& a) const;
65
66 FloatDiagMatrix& fill (float val);
67 FloatDiagMatrix& fill (float val, octave_idx_type beg, octave_idx_type end);
68 FloatDiagMatrix& fill (const FloatColumnVector& a);
69 FloatDiagMatrix& fill (const FloatRowVector& a);
70 FloatDiagMatrix& fill (const FloatColumnVector& a, octave_idx_type beg);
71 FloatDiagMatrix& fill (const FloatRowVector& a, octave_idx_type beg);
72
73 FloatDiagMatrix transpose (void) const { return MDiagArray2<float>::transpose(); }
74
75 friend OCTAVE_API FloatDiagMatrix real (const FloatComplexDiagMatrix& a);
76 friend OCTAVE_API FloatDiagMatrix imag (const FloatComplexDiagMatrix& a);
77
78 // resize is the destructive analog for this one
79
80 FloatMatrix extract (octave_idx_type r1, octave_idx_type c1, octave_idx_type r2, octave_idx_type c2) const;
81
82 // extract row or column i.
83
84 FloatRowVector row (octave_idx_type i) const;
85 FloatRowVector row (char *s) const;
86
87 FloatColumnVector column (octave_idx_type i) const;
88 FloatColumnVector column (char *s) const;
89
90 FloatDiagMatrix inverse (void) const;
91 FloatDiagMatrix inverse (int& info) const;
92
93 // other operations
94
95 FloatColumnVector diag (octave_idx_type k = 0) const;
96
97 // i/o
98
99 friend OCTAVE_API std::ostream& operator << (std::ostream& os, const FloatDiagMatrix& a);
100
101 private:
102
103 FloatDiagMatrix (float *d, octave_idx_type nr, octave_idx_type nc) : MDiagArray2<float> (d, nr, nc) { }
104 };
105
106 // diagonal matrix by diagonal matrix -> diagonal matrix operations
107
108 FloatDiagMatrix
109 operator * (const FloatDiagMatrix& a, const FloatDiagMatrix& b);
110
111 MDIAGARRAY2_FORWARD_DEFS (MDiagArray2, FloatDiagMatrix, float)
112
113 #endif
114
115 /*
116 ;;; Local Variables: ***
117 ;;; mode: C++ ***
118 ;;; End: ***
119 */