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- /* Boost test/test_float.cpp
- * test arithmetic operations on a range of intervals
- *
- * Copyright 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.hpp>
- #include <boost/test/test_tools.hpp>
- #include <boost/config.hpp>
- #include "bugs.hpp"
- /* All the following tests should be BOOST_CHECK; however, if a test fails,
- the probability is high that hundreds of other tests will fail, so it is
- replaced by BOOST_REQUIRE to avoid flooding the logs. */
- template<class T, class F>
- void test_unary() {
- typedef typename F::I I;
- for(I a(-10., -9.91); a.lower() <= 10.; a += 0.3) {
- if (!F::validate(a)) continue;
- I rI = F::f_I(a);
- T rT1 = F::f_T(a.lower()), rT2 = F::f_T(a.upper()),
- rT3 = F::f_T(median(a));
- BOOST_REQUIRE(in(rT1, rI));
- BOOST_REQUIRE(in(rT2, rI));
- BOOST_REQUIRE(in(rT3, rI));
- }
- }
- template<class T, class F>
- void test_binary() {
- typedef typename F::I I;
- for(I a(-10., -9.91); a.lower() <= 10.; a += 0.3) {
- for(I b(-10., -9.91); b.lower() <= 10.; b += 0.3) {
- if (!F::validate(a, b)) continue;
- T al = a.lower(), au = a.upper(), bl = b.lower(), bu = b.upper();
- I rII = F::f_II(a, b);
- I rIT1 = F::f_IT(a, bl), rIT2 = F::f_IT(a, bu);
- I rTI1 = F::f_TI(al, b), rTI2 = F::f_TI(au, b);
- I rTT1 = F::f_TT(al, bl), rTT2 = F::f_TT(al, bu);
- I rTT3 = F::f_TT(au, bl), rTT4 = F::f_TT(au, bu);
- BOOST_REQUIRE(subset(rTT1, rIT1));
- BOOST_REQUIRE(subset(rTT3, rIT1));
- BOOST_REQUIRE(subset(rTT2, rIT2));
- BOOST_REQUIRE(subset(rTT4, rIT2));
- BOOST_REQUIRE(subset(rTT1, rTI1));
- BOOST_REQUIRE(subset(rTT2, rTI1));
- BOOST_REQUIRE(subset(rTT3, rTI2));
- BOOST_REQUIRE(subset(rTT4, rTI2));
- BOOST_REQUIRE(subset(rIT1, rII));
- BOOST_REQUIRE(subset(rIT2, rII));
- BOOST_REQUIRE(subset(rTI1, rII));
- BOOST_REQUIRE(subset(rTI2, rII));
- }
- }
- }
- #define new_unary_bunch(name, op, val) \
- template<class T> \
- struct name { \
- typedef boost::numeric::interval<T> I; \
- static I f_I(const I& a) { return op(a); } \
- static T f_T(const T& a) { return op(a); } \
- static bool validate(const I& a) { return val; } \
- }
- //#ifndef BOOST_NO_STDC_NAMESPACE
- using std::abs;
- using std::sqrt;
- //#endif
- new_unary_bunch(bunch_pos, +, true);
- new_unary_bunch(bunch_neg, -, true);
- new_unary_bunch(bunch_sqrt, sqrt, a.lower() >= 0.);
- new_unary_bunch(bunch_abs, abs, true);
- template<class T>
- void test_all_unaries() {
- BOOST_TEST_CHECKPOINT("pos"); test_unary<T, bunch_pos<T> >();
- BOOST_TEST_CHECKPOINT("neg"); test_unary<T, bunch_neg<T> >();
- BOOST_TEST_CHECKPOINT("sqrt"); test_unary<T, bunch_sqrt<T> >();
- BOOST_TEST_CHECKPOINT("abs"); test_unary<T, bunch_abs<T> >();
- }
- #define new_binary_bunch(name, op, val) \
- template<class T> \
- struct bunch_##name { \
- typedef boost::numeric::interval<T> I; \
- static I f_II(const I& a, const I& b) { return a op b; } \
- static I f_IT(const I& a, const T& b) { return a op b; } \
- static I f_TI(const T& a, const I& b) { return a op b; } \
- static I f_TT(const T& a, const T& b) \
- { return boost::numeric::interval_lib::name<I>(a,b); } \
- static bool validate(const I& a, const I& b) { return val; } \
- }
- new_binary_bunch(add, +, true);
- new_binary_bunch(sub, -, true);
- new_binary_bunch(mul, *, true);
- new_binary_bunch(div, /, !zero_in(b));
- template<class T>
- void test_all_binaries() {
- BOOST_TEST_CHECKPOINT("add"); test_binary<T, bunch_add<T> >();
- BOOST_TEST_CHECKPOINT("sub"); test_binary<T, bunch_sub<T> >();
- BOOST_TEST_CHECKPOINT("mul"); test_binary<T, bunch_mul<T> >();
- BOOST_TEST_CHECKPOINT("div"); test_binary<T, bunch_div<T> >();
- }
- int test_main(int, char *[]) {
- BOOST_TEST_CHECKPOINT("float tests");
- test_all_unaries<float> ();
- test_all_binaries<float> ();
- BOOST_TEST_CHECKPOINT("double tests");
- test_all_unaries<double>();
- test_all_binaries<double>();
- //BOOST_TEST_CHECKPOINT("long double tests");
- //test_all_unaries<long double>();
- //test_all_binaries<long double>();
- # ifdef __BORLANDC__
- ::detail::ignore_warnings();
- # endif
- return 0;
- }
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