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- /* Boost test/fmod.cpp
- * test the fmod with specially crafted integer intervals
- *
- * Copyright 2002-2003 Guillaume Melquiond
- *
- * 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/interval.hpp>
- #include <boost/numeric/interval/arith.hpp>
- #include <boost/numeric/interval/arith2.hpp>
- #include <boost/numeric/interval/utility.hpp>
- #include <boost/numeric/interval/checking.hpp>
- #include <boost/numeric/interval/rounding.hpp>
- #include <boost/test/minimal.hpp>
- #include "bugs.hpp"
- struct my_rounded_arith {
- int sub_down(int x, int y) { return x - y; }
- int sub_up (int x, int y) { return x - y; }
- int mul_down(int x, int y) { return x * y; }
- int mul_up (int x, int y) { return x * y; }
- int div_down(int x, int y) {
- int q = x / y;
- return (x % y < 0) ? (q - 1) : q;
- }
- int int_down(int x) { return x; }
- };
- using namespace boost;
- using namespace numeric;
- using namespace interval_lib;
- typedef change_rounding<interval<int>, save_state_nothing<my_rounded_arith> >::type I;
- int test_main(int, char *[]) {
- BOOST_CHECK(equal(fmod(I(6,9), 7), I(6,9)));
- BOOST_CHECK(equal(fmod(6, I(7,8)), I(6,6)));
- BOOST_CHECK(equal(fmod(I(6,9), I(7,8)), I(6,9)));
- BOOST_CHECK(equal(fmod(I(13,17), 7), I(6,10)));
- BOOST_CHECK(equal(fmod(13, I(7,8)), I(5,6)));
- BOOST_CHECK(equal(fmod(I(13,17), I(7,8)), I(5,10)));
- BOOST_CHECK(equal(fmod(I(-17,-13), 7), I(4,8)));
- BOOST_CHECK(equal(fmod(-17, I(7,8)), I(4,7)));
- BOOST_CHECK(equal(fmod(I(-17,-13), I(7,8)), I(4,11)));
- return 0;
- }
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