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