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83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
/* boost random_test.cpp various tests
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*
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* Copyright Jens Maurer 2000
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* Distributed under the Boost Software License, Version 1.0. (See
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* accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*
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* $Id$
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*/
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#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300
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#pragma warning( disable : 4786 )
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#endif
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#include <iostream>
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#include <sstream>
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#include <string>
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#include <cmath>
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#include <iterator>
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#include <vector>
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#include <boost/random.hpp>
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#include <boost/config.hpp>
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#include <boost/random/parallel/lcg64.hpp>
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#include <boost/random/buffered_generator.hpp>
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#include <boost/test/test_tools.hpp>
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#include <boost/test/included/test_exec_monitor.hpp>
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template <class ValueType>
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ValueType forward(boost::buffered_generator<ValueType>& gen)
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{
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for(int i = 0; i < 9999; i++)
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gen();
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return gen();
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}
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template<class PRNG>
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void test(const std::string & name, const PRNG &)
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{
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using namespace boost::random;
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std::cout << "Testing " << name << ": ";
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PRNG rng; // default ctor
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PRNG rng_copy; // default ctor
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typedef typename PRNG::result_type result_type;
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boost::basic_buffered_generator<PRNG,result_type> gen_default;
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boost::basic_buffered_generator<PRNG,result_type> gen_copy(rng);
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boost::basic_buffered_generator<PRNG&,result_type> gen_ref(rng);
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result_type val_default=forward(gen_default);
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result_type val_copy=forward(gen_copy);
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result_type val_ref=forward(gen_ref);
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for(int i = 0; i < (10000/BOOST_BUFFERED_GENERATOR_BUFFER_SIZE+1)*BOOST_BUFFERED_GENERATOR_BUFFER_SIZE; i++)
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rng_copy();
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result_type val_ref_next = rng();
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result_type val_next = rng_copy();
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bool result = (val_default==val_copy) && (val_copy == val_ref) && (val_ref_next==val_next);
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std::cout << val_default << " " << val_copy << " " << val_ref << " "
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<< val_ref_next << " " << val_next << std::endl;
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BOOST_CHECK(result);
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gen_default.reset();
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gen_copy.reset();
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gen_ref.reset();
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}
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void test_all()
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{
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test("minstd_rand", boost::minstd_rand());
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test("lcg64a", boost::lcg64a());
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}
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int test_main(int, char*[])
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{
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test_all();
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return 0;
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}
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