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