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krandomsequence.h
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1 /* This file is part of the KDE libraries
2  Copyright (c) 1999 Sean Harmer <sh@astro.keele.ac.uk>
3 
4  This library is free software; you can redistribute it and/or
5  modify it under the terms of the GNU Library General Public
6  License version 2 as published by the Free Software Foundation.
7 
8  This library is distributed in the hope that it will be useful,
9  but WITHOUT ANY WARRANTY; without even the implied warranty of
10  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11  Library General Public License for more details.
12 
13  You should have received a copy of the GNU Library General Public License
14  along with this library; see the file COPYING.LIB. If not, write to
15  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
16  Boston, MA 02110-1301, USA.
17 */
18 #ifndef K_RANDOM_SEQUENCE_H
19 #define K_RANDOM_SEQUENCE_H
20 
21 #include <kdecore_export.h>
22 #include <QtCore/QList>
23 
40 class KDECORE_EXPORT KRandomSequence
41 {
42 public:
56  explicit KRandomSequence( long lngSeed = 0 );
57 
61  virtual ~KRandomSequence();
62 
66  KRandomSequence(const KRandomSequence &a);
67 
71  KRandomSequence &operator=(const KRandomSequence &a);
72 
79  void setSeed( long lngSeed = 0 );
80 
86  double getDouble();
87 
94  unsigned long getLong(unsigned long max);
95 
101  bool getBool();
102 
109  template<typename T> void randomize(QList<T>& list) {
110  if (!list.isEmpty()) {
111  QList<T> l;
112  l.append(list.takeFirst());
113  while (list.count())
114  l.insert(int(getLong(l.count()+1)), list.takeFirst());
115  list = l;
116  }
117  }
118 
119 
141  void modulate(int i);
142 
143 private:
144  class Private;
145  Private *const d;
146 };
147 
148 #endif
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