| /* 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; |
| } |