ICRS Eurobot 2013
Dependencies: mbed mbed-rtos Servo QEI
Diff: tvmet/util/Random.h
- Revision:
- 15:9c5aaeda36dc
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tvmet/util/Random.h Sat Apr 06 20:57:54 2013 +0000 @@ -0,0 +1,101 @@ +/* + * Tiny Vector Matrix Library + * Dense Vector Matrix Libary of Tiny size using Expression Templates + * + * Copyright (C) 2001 - 2007 Olaf Petzold <opetzold@users.sourceforge.net> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * $Id: Random.h,v 1.7 2007-06-23 15:58:59 opetzold Exp $ + */ + +#ifndef TVMET_UTIL_RANDOM_H +#define TVMET_UTIL_RANDOM_H + +#include <tvmet/CompileTimeError.h> + +namespace tvmet { + +namespace util { + + +/** + * \class Random Random.h "tvmet/util/Random.h" + * \brief A simple random class. + * On each access this class returns a new random number using + * std::rand(). The range generated is templated by MIN and + * MAX. + * \ingroup _util_function + * + * \par Example: + * \code + * #include <algorithm> + * + * tvmet::Random<int, 0, 100> random; + * + * std::generate(m1.begin(), m1.end(), random()); + * \endcode + */ +template<class T, int MIN=0, int MAX=100> +class Random { + static unsigned int s_seed; +public: + typedef T value_type; + Random() { TVMET_CT_CONDITION(MIN<MAX, wrong_random_range) } + value_type operator()() { + s_seed += (unsigned)std::time(0); + std::srand(s_seed); + return MIN + int(double(MAX) * std::rand()/(double(RAND_MAX)+1.0)); + } +}; +// instance +template<class T, int MIN, int MAX> +unsigned int Random<T, MIN, MAX>::s_seed; + + +#if defined(TVMET_HAVE_COMPLEX) +/** + * \class Random< std::complex<T> > Random.h "tvmet/util/Random.h" + * \brief Specialized Random class. + * \ingroup _util_function + */ +template<class T, int MIN=0, int MAX=100> +class Random { + static unsigned int s_seed; +public: + typedef std::complex<T> value_type; + Random() { TVMET_CT_CONDITION(MIN<MAX, wrong_random_range) } + value_type operator()() { + s_seed += (unsigned)std::time(0); + std::srand(s_seed); + return MIN + int(double(MAX) * std::rand()/(double(RAND_MAX)+1.0)); + } +}; +// instance +template<class T, int MIN, int MAX> +unsigned int Random<std::complex<T>, MIN, MAX>::s_seed; +#endif // defined(TVMET_HAVE_COMPLEX) + + +} // namespace util + +} // namespace tvmet + +#endif // TVMET_UTIL_RANDOM_H + +// Local Variables: +// mode:C++ +// tab-width:8 +// End: