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2014 Eurobot fork

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tvmet/util/Random.h@15:9c5aaeda36dc, 2013-04-06 (annotated)

Committer:
madcowswe
Date:
Sat Apr 06 20:57:54 2013 +0000
Revision:
15:9c5aaeda36dc
Encoders fairly tuned, still has random noise in it

Who changed what in which revision?

UserRevisionLine numberNew contents of line
madcowswe 15:9c5aaeda36dc 1 /*
madcowswe 15:9c5aaeda36dc 2 * Tiny Vector Matrix Library
madcowswe 15:9c5aaeda36dc 3 * Dense Vector Matrix Libary of Tiny size using Expression Templates
madcowswe 15:9c5aaeda36dc 4 *
madcowswe 15:9c5aaeda36dc 5 * Copyright (C) 2001 - 2007 Olaf Petzold <opetzold@users.sourceforge.net>
madcowswe 15:9c5aaeda36dc 6 *
madcowswe 15:9c5aaeda36dc 7 * This library is free software; you can redistribute it and/or
madcowswe 15:9c5aaeda36dc 8 * modify it under the terms of the GNU Lesser General Public
madcowswe 15:9c5aaeda36dc 9 * License as published by the Free Software Foundation; either
madcowswe 15:9c5aaeda36dc 10 * version 2.1 of the License, or (at your option) any later version.
madcowswe 15:9c5aaeda36dc 11 *
madcowswe 15:9c5aaeda36dc 12 * This library is distributed in the hope that it will be useful,
madcowswe 15:9c5aaeda36dc 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
madcowswe 15:9c5aaeda36dc 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
madcowswe 15:9c5aaeda36dc 15 * Lesser General Public License for more details.
madcowswe 15:9c5aaeda36dc 16 *
madcowswe 15:9c5aaeda36dc 17 * You should have received a copy of the GNU Lesser General Public
madcowswe 15:9c5aaeda36dc 18 * License along with this library; if not, write to the Free Software
madcowswe 15:9c5aaeda36dc 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
madcowswe 15:9c5aaeda36dc 20 *
madcowswe 15:9c5aaeda36dc 21 * $Id: Random.h,v 1.7 2007-06-23 15:58:59 opetzold Exp $
madcowswe 15:9c5aaeda36dc 22 */
madcowswe 15:9c5aaeda36dc 23
madcowswe 15:9c5aaeda36dc 24 #ifndef TVMET_UTIL_RANDOM_H
madcowswe 15:9c5aaeda36dc 25 #define TVMET_UTIL_RANDOM_H
madcowswe 15:9c5aaeda36dc 26
madcowswe 15:9c5aaeda36dc 27 #include <tvmet/CompileTimeError.h>
madcowswe 15:9c5aaeda36dc 28
madcowswe 15:9c5aaeda36dc 29 namespace tvmet {
madcowswe 15:9c5aaeda36dc 30
madcowswe 15:9c5aaeda36dc 31 namespace util {
madcowswe 15:9c5aaeda36dc 32
madcowswe 15:9c5aaeda36dc 33
madcowswe 15:9c5aaeda36dc 34 /**
madcowswe 15:9c5aaeda36dc 35 * \class Random Random.h "tvmet/util/Random.h"
madcowswe 15:9c5aaeda36dc 36 * \brief A simple random class.
madcowswe 15:9c5aaeda36dc 37 * On each access this class returns a new random number using
madcowswe 15:9c5aaeda36dc 38 * std::rand(). The range generated is templated by MIN and
madcowswe 15:9c5aaeda36dc 39 * MAX.
madcowswe 15:9c5aaeda36dc 40 * \ingroup _util_function
madcowswe 15:9c5aaeda36dc 41 *
madcowswe 15:9c5aaeda36dc 42 * \par Example:
madcowswe 15:9c5aaeda36dc 43 * \code
madcowswe 15:9c5aaeda36dc 44 * #include <algorithm>
madcowswe 15:9c5aaeda36dc 45 *
madcowswe 15:9c5aaeda36dc 46 * tvmet::Random<int, 0, 100> random;
madcowswe 15:9c5aaeda36dc 47 *
madcowswe 15:9c5aaeda36dc 48 * std::generate(m1.begin(), m1.end(), random());
madcowswe 15:9c5aaeda36dc 49 * \endcode
madcowswe 15:9c5aaeda36dc 50 */
madcowswe 15:9c5aaeda36dc 51 template<class T, int MIN=0, int MAX=100>
madcowswe 15:9c5aaeda36dc 52 class Random {
madcowswe 15:9c5aaeda36dc 53 static unsigned int s_seed;
madcowswe 15:9c5aaeda36dc 54 public:
madcowswe 15:9c5aaeda36dc 55 typedef T value_type;
madcowswe 15:9c5aaeda36dc 56 Random() { TVMET_CT_CONDITION(MIN<MAX, wrong_random_range) }
madcowswe 15:9c5aaeda36dc 57 value_type operator()() {
madcowswe 15:9c5aaeda36dc 58 s_seed += (unsigned)std::time(0);
madcowswe 15:9c5aaeda36dc 59 std::srand(s_seed);
madcowswe 15:9c5aaeda36dc 60 return MIN + int(double(MAX) * std::rand()/(double(RAND_MAX)+1.0));
madcowswe 15:9c5aaeda36dc 61 }
madcowswe 15:9c5aaeda36dc 62 };
madcowswe 15:9c5aaeda36dc 63 // instance
madcowswe 15:9c5aaeda36dc 64 template<class T, int MIN, int MAX>
madcowswe 15:9c5aaeda36dc 65 unsigned int Random<T, MIN, MAX>::s_seed;
madcowswe 15:9c5aaeda36dc 66
madcowswe 15:9c5aaeda36dc 67
madcowswe 15:9c5aaeda36dc 68 #if defined(TVMET_HAVE_COMPLEX)
madcowswe 15:9c5aaeda36dc 69 /**
madcowswe 15:9c5aaeda36dc 70 * \class Random< std::complex<T> > Random.h "tvmet/util/Random.h"
madcowswe 15:9c5aaeda36dc 71 * \brief Specialized Random class.
madcowswe 15:9c5aaeda36dc 72 * \ingroup _util_function
madcowswe 15:9c5aaeda36dc 73 */
madcowswe 15:9c5aaeda36dc 74 template<class T, int MIN=0, int MAX=100>
madcowswe 15:9c5aaeda36dc 75 class Random {
madcowswe 15:9c5aaeda36dc 76 static unsigned int s_seed;
madcowswe 15:9c5aaeda36dc 77 public:
madcowswe 15:9c5aaeda36dc 78 typedef std::complex<T> value_type;
madcowswe 15:9c5aaeda36dc 79 Random() { TVMET_CT_CONDITION(MIN<MAX, wrong_random_range) }
madcowswe 15:9c5aaeda36dc 80 value_type operator()() {
madcowswe 15:9c5aaeda36dc 81 s_seed += (unsigned)std::time(0);
madcowswe 15:9c5aaeda36dc 82 std::srand(s_seed);
madcowswe 15:9c5aaeda36dc 83 return MIN + int(double(MAX) * std::rand()/(double(RAND_MAX)+1.0));
madcowswe 15:9c5aaeda36dc 84 }
madcowswe 15:9c5aaeda36dc 85 };
madcowswe 15:9c5aaeda36dc 86 // instance
madcowswe 15:9c5aaeda36dc 87 template<class T, int MIN, int MAX>
madcowswe 15:9c5aaeda36dc 88 unsigned int Random<std::complex<T>, MIN, MAX>::s_seed;
madcowswe 15:9c5aaeda36dc 89 #endif // defined(TVMET_HAVE_COMPLEX)
madcowswe 15:9c5aaeda36dc 90
madcowswe 15:9c5aaeda36dc 91
madcowswe 15:9c5aaeda36dc 92 } // namespace util
madcowswe 15:9c5aaeda36dc 93
madcowswe 15:9c5aaeda36dc 94 } // namespace tvmet
madcowswe 15:9c5aaeda36dc 95
madcowswe 15:9c5aaeda36dc 96 #endif // TVMET_UTIL_RANDOM_H
madcowswe 15:9c5aaeda36dc 97
madcowswe 15:9c5aaeda36dc 98 // Local Variables:
madcowswe 15:9c5aaeda36dc 99 // mode:C++
madcowswe 15:9c5aaeda36dc 100 // tab-width:8
madcowswe 15:9c5aaeda36dc 101 // End: