Shuto Naruse / Mbed 2 deprecated Eurobot2012_Primary

Eurobot2012_Primary

Dependencies:   mbed Eurobot_2012_Primary

tvmet/util/Random.h@25:143b19c1fb05, 2012-10-17 (annotated)

Committer:
narshu
Date:
Wed Oct 17 22:22:28 2012 +0000
Revision:
25:143b19c1fb05
Commit before publishing;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
narshu 25:143b19c1fb05 1 /*
narshu 25:143b19c1fb05 2 * Tiny Vector Matrix Library
narshu 25:143b19c1fb05 3 * Dense Vector Matrix Libary of Tiny size using Expression Templates
narshu 25:143b19c1fb05 4 *
narshu 25:143b19c1fb05 5 * Copyright (C) 2001 - 2007 Olaf Petzold <opetzold@users.sourceforge.net>
narshu 25:143b19c1fb05 6 *
narshu 25:143b19c1fb05 7 * This library is free software; you can redistribute it and/or
narshu 25:143b19c1fb05 8 * modify it under the terms of the GNU Lesser General Public
narshu 25:143b19c1fb05 9 * License as published by the Free Software Foundation; either
narshu 25:143b19c1fb05 10 * version 2.1 of the License, or (at your option) any later version.
narshu 25:143b19c1fb05 11 *
narshu 25:143b19c1fb05 12 * This library is distributed in the hope that it will be useful,
narshu 25:143b19c1fb05 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
narshu 25:143b19c1fb05 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
narshu 25:143b19c1fb05 15 * Lesser General Public License for more details.
narshu 25:143b19c1fb05 16 *
narshu 25:143b19c1fb05 17 * You should have received a copy of the GNU Lesser General Public
narshu 25:143b19c1fb05 18 * License along with this library; if not, write to the Free Software
narshu 25:143b19c1fb05 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
narshu 25:143b19c1fb05 20 *
narshu 25:143b19c1fb05 21 * $Id: Random.h,v 1.7 2007-06-23 15:58:59 opetzold Exp $
narshu 25:143b19c1fb05 22 */
narshu 25:143b19c1fb05 23
narshu 25:143b19c1fb05 24 #ifndef TVMET_UTIL_RANDOM_H
narshu 25:143b19c1fb05 25 #define TVMET_UTIL_RANDOM_H
narshu 25:143b19c1fb05 26
narshu 25:143b19c1fb05 27 #include <tvmet/CompileTimeError.h>
narshu 25:143b19c1fb05 28
narshu 25:143b19c1fb05 29 namespace tvmet {
narshu 25:143b19c1fb05 30
narshu 25:143b19c1fb05 31 namespace util {
narshu 25:143b19c1fb05 32
narshu 25:143b19c1fb05 33
narshu 25:143b19c1fb05 34 /**
narshu 25:143b19c1fb05 35 * \class Random Random.h "tvmet/util/Random.h"
narshu 25:143b19c1fb05 36 * \brief A simple random class.
narshu 25:143b19c1fb05 37 * On each access this class returns a new random number using
narshu 25:143b19c1fb05 38 * std::rand(). The range generated is templated by MIN and
narshu 25:143b19c1fb05 39 * MAX.
narshu 25:143b19c1fb05 40 * \ingroup _util_function
narshu 25:143b19c1fb05 41 *
narshu 25:143b19c1fb05 42 * \par Example:
narshu 25:143b19c1fb05 43 * \code
narshu 25:143b19c1fb05 44 * #include <algorithm>
narshu 25:143b19c1fb05 45 *
narshu 25:143b19c1fb05 46 * tvmet::Random<int, 0, 100> random;
narshu 25:143b19c1fb05 47 *
narshu 25:143b19c1fb05 48 * std::generate(m1.begin(), m1.end(), random());
narshu 25:143b19c1fb05 49 * \endcode
narshu 25:143b19c1fb05 50 */
narshu 25:143b19c1fb05 51 template<class T, int MIN=0, int MAX=100>
narshu 25:143b19c1fb05 52 class Random {
narshu 25:143b19c1fb05 53 static unsigned int s_seed;
narshu 25:143b19c1fb05 54 public:
narshu 25:143b19c1fb05 55 typedef T value_type;
narshu 25:143b19c1fb05 56 Random() { TVMET_CT_CONDITION(MIN<MAX, wrong_random_range) }
narshu 25:143b19c1fb05 57 value_type operator()() {
narshu 25:143b19c1fb05 58 s_seed += (unsigned)std::time(0);
narshu 25:143b19c1fb05 59 std::srand(s_seed);
narshu 25:143b19c1fb05 60 return MIN + int(double(MAX) * std::rand()/(double(RAND_MAX)+1.0));
narshu 25:143b19c1fb05 61 }
narshu 25:143b19c1fb05 62 };
narshu 25:143b19c1fb05 63 // instance
narshu 25:143b19c1fb05 64 template<class T, int MIN, int MAX>
narshu 25:143b19c1fb05 65 unsigned int Random<T, MIN, MAX>::s_seed;
narshu 25:143b19c1fb05 66
narshu 25:143b19c1fb05 67
narshu 25:143b19c1fb05 68 #if defined(TVMET_HAVE_COMPLEX)
narshu 25:143b19c1fb05 69 /**
narshu 25:143b19c1fb05 70 * \class Random< std::complex<T> > Random.h "tvmet/util/Random.h"
narshu 25:143b19c1fb05 71 * \brief Specialized Random class.
narshu 25:143b19c1fb05 72 * \ingroup _util_function
narshu 25:143b19c1fb05 73 */
narshu 25:143b19c1fb05 74 template<class T, int MIN=0, int MAX=100>
narshu 25:143b19c1fb05 75 class Random {
narshu 25:143b19c1fb05 76 static unsigned int s_seed;
narshu 25:143b19c1fb05 77 public:
narshu 25:143b19c1fb05 78 typedef std::complex<T> value_type;
narshu 25:143b19c1fb05 79 Random() { TVMET_CT_CONDITION(MIN<MAX, wrong_random_range) }
narshu 25:143b19c1fb05 80 value_type operator()() {
narshu 25:143b19c1fb05 81 s_seed += (unsigned)std::time(0);
narshu 25:143b19c1fb05 82 std::srand(s_seed);
narshu 25:143b19c1fb05 83 return MIN + int(double(MAX) * std::rand()/(double(RAND_MAX)+1.0));
narshu 25:143b19c1fb05 84 }
narshu 25:143b19c1fb05 85 };
narshu 25:143b19c1fb05 86 // instance
narshu 25:143b19c1fb05 87 template<class T, int MIN, int MAX>
narshu 25:143b19c1fb05 88 unsigned int Random<std::complex<T>, MIN, MAX>::s_seed;
narshu 25:143b19c1fb05 89 #endif // defined(TVMET_HAVE_COMPLEX)
narshu 25:143b19c1fb05 90
narshu 25:143b19c1fb05 91
narshu 25:143b19c1fb05 92 } // namespace util
narshu 25:143b19c1fb05 93
narshu 25:143b19c1fb05 94 } // namespace tvmet
narshu 25:143b19c1fb05 95
narshu 25:143b19c1fb05 96 #endif // TVMET_UTIL_RANDOM_H
narshu 25:143b19c1fb05 97
narshu 25:143b19c1fb05 98 // Local Variables:
narshu 25:143b19c1fb05 99 // mode:C++
narshu 25:143b19c1fb05 100 // tab-width:8
narshu 25:143b19c1fb05 101 // End: