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- /* Boost test/pi.cpp
- * test if the pi constant is correctly defined
- *
- * Copyright 2002-2003 Guillaume Melquiond, Sylvain Pion
- *
- * Distributed under the Boost Software License, Version 1.0.
- * (See accompanying file LICENSE_1_0.txt or
- * copy at http://www.boost.org/LICENSE_1_0.txt)
- */
- #include <boost/numeric/interval.hpp>
- #include <boost/limits.hpp>
- #include <boost/test/minimal.hpp>
- #include "bugs.hpp"
- #define PI 3.14159265358979323846
- typedef boost::numeric::interval<int> I_i;
- typedef boost::numeric::interval<float> I_f;
- typedef boost::numeric::interval<double> I_d;
- typedef boost::numeric::interval<long double> I_ld;
- using boost::numeric::interval_lib::pi;
- using boost::numeric::interval_lib::pi_half;
- using boost::numeric::interval_lib::pi_twice;
- int test_main(int, char *[]) {
- I_i pi_i = pi<I_i>();
- I_f pi_f = pi<I_f>();
- I_d pi_d = pi<I_d>();
- I_ld pi_ld = pi<I_ld>();
- BOOST_CHECK(in((int) PI, pi_i));
- BOOST_CHECK(in((float) PI, pi_f));
- BOOST_CHECK(in((double)PI, pi_d));
- BOOST_CHECK(subset(pi_i, widen(I_i((int) PI), 1)));
- BOOST_CHECK(subset(pi_f, widen(I_f((float) PI), (std::numeric_limits<float> ::min)())));
- BOOST_CHECK(subset(pi_d, widen(I_d((double)PI), (std::numeric_limits<double>::min)())));
- // We can't test the following equalities for interval<int>.
- I_f pi_f_half = pi_half<I_f>();
- I_f pi_f_twice = pi_twice<I_f>();
- I_d pi_d_half = pi_half<I_d>();
- I_d pi_d_twice = pi_twice<I_d>();
- I_ld pi_ld_half = pi_half<I_ld>();
- I_ld pi_ld_twice = pi_twice<I_ld>();
- BOOST_CHECK(equal(2.0f * pi_f_half, pi_f));
- BOOST_CHECK(equal(2.0 * pi_d_half, pi_d));
- BOOST_CHECK(equal(2.0l * pi_ld_half, pi_ld));
- BOOST_CHECK(equal(2.0f * pi_f, pi_f_twice));
- BOOST_CHECK(equal(2.0 * pi_d, pi_d_twice));
- BOOST_CHECK(equal(2.0l * pi_ld, pi_ld_twice));
- return 0;
- }
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