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91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
///////////////////////////////////////////////////////////////
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// Copyright 2013 John Maddock. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_
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#include <boost/random/mersenne_twister.hpp>
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#include <boost/random/uniform_int.hpp>
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#include <boost/timer.hpp>
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#include "test.hpp"
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#include <iostream>
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#include <iomanip>
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#include <sstream>
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#include <boost/archive/text_iarchive.hpp>
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#include <boost/archive/text_oarchive.hpp>
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#include <boost/archive/binary_iarchive.hpp>
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#include <boost/archive/binary_oarchive.hpp>
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#ifndef BOOST_MP_TEST_FLOAT_SERIAL_HPP
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#define BOOST_MP_TEST_FLOAT_SERIAL_HPP
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template <class T>
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T generate_random(unsigned bits_wanted)
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{
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typedef typename T::backend_type::exponent_type e_type;
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static boost::random::mt19937 gen;
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T val = gen();
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T prev_val = -1;
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while(val != prev_val)
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{
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val *= (gen.max)();
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prev_val = val;
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val += gen();
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}
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e_type e;
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val = frexp(val, &e);
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static boost::random::uniform_int_distribution<e_type> ui(std::numeric_limits<T>::min_exponent + 1, std::numeric_limits<T>::max_exponent - 1);
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return ldexp(val, ui(gen));
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}
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template <class T>
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void test()
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{
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boost::timer tim;
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while(true)
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{
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T val = generate_random<T>(boost::math::tools::digits<T>());
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std::stringstream ss;
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boost::archive::text_oarchive oa(ss);
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oa << static_cast<const T&>(val);
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boost::archive::text_iarchive ia(ss);
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T val2;
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ia >> val2;
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BOOST_CHECK_EQUAL(val, val2);
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ss.clear();
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boost::archive::binary_oarchive ba(ss);
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ba << static_cast<const T&>(val);
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boost::archive::binary_iarchive ib(ss);
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ib >> val2;
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BOOST_CHECK_EQUAL(val, val2);
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val = -val;
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ss.clear();
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boost::archive::text_oarchive oa2(ss);
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oa2 << static_cast<const T&>(val);
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boost::archive::text_iarchive ia2(ss);
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ia2 >> val2;
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BOOST_CHECK_EQUAL(val, val2);
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ss.clear();
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boost::archive::binary_oarchive ba2(ss);
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ba2 << static_cast<const T&>(val);
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boost::archive::binary_iarchive ib2(ss);
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ib2 >> val2;
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BOOST_CHECK_EQUAL(val, val2);
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//
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// Check to see if test is taking too long.
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// Tests run on the compiler farm time out after 300 seconds,
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// so don't get too close to that:
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//
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if(tim.elapsed() > 150)
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{
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std::cout << "Timeout reached, aborting tests now....\n";
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break;
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}
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}
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}
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#endif |