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240 lines
6.9 KiB
C++
240 lines
6.9 KiB
C++
// Copyright (c) 2006 Johan Rade
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// Copyright (c) 2011 Paul A. Bristow To incorporate into Boost.Math
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt
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// or copy at http://www.boost.org/LICENSE_1_0.txt)
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// test_nonfinite_trap.cpp
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#ifdef _MSC_VER
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# pragma warning(disable : 4702)
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#endif
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#define BOOST_TEST_MAIN
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#include <boost/test/auto_unit_test.hpp>
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#include "almost_equal.ipp" // Similar to BOOST_CLOSE_FRACTION.
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#include "s_.ipp" // To create test strings like std::basic_string<CharType> s = S_("0 -0");
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#include <boost/math/special_functions/nonfinite_num_facets.hpp>
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#include <locale>
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#include <sstream>
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namespace {
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// Using an anonymous namespace resolves ambiguities on platforms
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// with fpclassify etc functions at global scope.
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using namespace boost::math;
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using boost::math::signbit;
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using boost::math::changesign;
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using boost::math::isnan;
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//------------------------------------------------------------------------------
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void trap_test_finite();
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void trap_test_inf();
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void trap_test_nan();
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BOOST_AUTO_TEST_CASE(trap_test)
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{
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trap_test_finite();
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trap_test_inf();
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trap_test_nan();
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}
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//------------------------------------------------------------------------------
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template<class CharType, class ValType> void trap_test_finite_impl();
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void trap_test_finite()
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{
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trap_test_finite_impl<char, float>();
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trap_test_finite_impl<char, double>();
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trap_test_finite_impl<char, long double>();
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trap_test_finite_impl<wchar_t, float>();
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trap_test_finite_impl<wchar_t, double>();
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trap_test_finite_impl<wchar_t, long double>();
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}
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template<class CharType, class ValType> void trap_test_finite_impl()
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{
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std::locale old_locale;
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std::locale tmp_locale(old_locale,
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new nonfinite_num_put<CharType>(trap_infinity | trap_nan));
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std::locale new_locale(tmp_locale,
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new nonfinite_num_get<CharType>(trap_infinity | trap_nan));
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std::basic_stringstream<CharType> ss;
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ss.imbue(new_locale);
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ValType a1 = (ValType)1.2;
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ValType a2 = (ValType)-3.5;
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ValType a3 = (std::numeric_limits<ValType>::max)();
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ValType a4 = -(std::numeric_limits<ValType>::max)();
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ss << a1 << ' ' << a2 << ' ' << a3 << ' ' << a4;
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ValType b1, b2, b3, b4;
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ss >> b1 >> b2 >> b3 >> b4;
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BOOST_CHECK(almost_equal(b1, a1));
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BOOST_CHECK(almost_equal(b2, a2));
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BOOST_CHECK(almost_equal(b3, a3));
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BOOST_CHECK(almost_equal(b4, a4));
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BOOST_CHECK(b3 != std::numeric_limits<ValType>::infinity());
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BOOST_CHECK(b4 != -std::numeric_limits<ValType>::infinity());
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BOOST_CHECK(ss.rdstate() == std::ios_base::eofbit);
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ss.clear();
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ss.str(S_(""));
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ss << "++5";
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ValType b5;
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ss >> b5;
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BOOST_CHECK(ss.rdstate() == std::ios_base::failbit);
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}
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//------------------------------------------------------------------------------
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template<class CharType, class ValType> void trap_test_inf_impl();
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template<class CharType, class ValType> void trap_test_put_inf_impl();
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template<class CharType, class ValType> void trap_test_get_inf_impl();
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void trap_test_inf()
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{
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trap_test_inf_impl<char, float>();
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trap_test_inf_impl<char, double>();
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trap_test_inf_impl<char, long double>();
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trap_test_inf_impl<wchar_t, float>();
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trap_test_inf_impl<wchar_t, double>();
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trap_test_inf_impl<wchar_t, long double>();
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}
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template<class CharType, class ValType> void trap_test_inf_impl()
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{
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trap_test_put_inf_impl<CharType, ValType>();
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trap_test_get_inf_impl<CharType, ValType>();
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}
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template<class CharType, class ValType> void trap_test_put_inf_impl()
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{
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std::locale old_locale;
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std::locale new_locale(old_locale,
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new nonfinite_num_put<CharType>(trap_infinity));
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std::basic_stringstream<CharType> ss;
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ss.imbue(new_locale);
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ValType a1 = std::numeric_limits<ValType>::infinity();
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ss << a1;
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BOOST_CHECK(ss.rdstate() == std::ios_base::failbit
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|| ss.rdstate() == std::ios_base::badbit);
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ss.clear();
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ValType a2 = -std::numeric_limits<ValType>::infinity();
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ss << a2;
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BOOST_CHECK(ss.rdstate() == std::ios_base::failbit
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|| ss.rdstate() == std::ios_base::badbit);
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}
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template<class CharType, class ValType> void trap_test_get_inf_impl()
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{
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std::locale old_locale;
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std::locale tmp_locale(old_locale, new nonfinite_num_put<CharType>);
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std::locale new_locale(tmp_locale,
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new nonfinite_num_get<CharType>(trap_infinity));
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std::basic_stringstream<CharType> ss;
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ss.imbue(new_locale);
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ValType a1 = std::numeric_limits<ValType>::infinity();
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ss << a1;
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ValType b1;
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ss >> b1;
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BOOST_CHECK(ss.rdstate() == std::ios_base::failbit);
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ss.clear();
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ss.str(S_(""));
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ValType a2 = -std::numeric_limits<ValType>::infinity();
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ss << a2;
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ValType b2;
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ss >> b2;
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BOOST_CHECK(ss.rdstate() == std::ios_base::failbit);
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}
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//------------------------------------------------------------------------------
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template<class CharType, class ValType> void trap_test_nan_impl();
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template<class CharType, class ValType> void trap_test_put_nan_impl();
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template<class CharType, class ValType> void trap_test_get_nan_impl();
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void trap_test_nan()
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{
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trap_test_nan_impl<char, float>();
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trap_test_nan_impl<char, double>();
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trap_test_nan_impl<char, long double>();
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trap_test_nan_impl<wchar_t, float>();
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trap_test_nan_impl<wchar_t, double>();
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trap_test_nan_impl<wchar_t, long double>();
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}
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template<class CharType, class ValType> void trap_test_nan_impl()
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{
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trap_test_put_nan_impl<CharType, ValType>();
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trap_test_get_nan_impl<CharType, ValType>();
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}
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template<class CharType, class ValType> void trap_test_put_nan_impl()
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{
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std::locale old_locale;
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std::locale new_locale(old_locale,
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new nonfinite_num_put<CharType>(trap_nan));
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std::basic_stringstream<CharType> ss;
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ss.imbue(new_locale);
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ValType a1 = std::numeric_limits<ValType>::quiet_NaN();
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ss << a1;
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BOOST_CHECK(ss.rdstate() == std::ios_base::failbit
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|| ss.rdstate() == std::ios_base::badbit);
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ss.clear();
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ValType a2 = std::numeric_limits<ValType>::signaling_NaN();
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ss << a2;
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BOOST_CHECK(ss.rdstate() == std::ios_base::failbit
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|| ss.rdstate() == std::ios_base::badbit);
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}
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template<class CharType, class ValType> void trap_test_get_nan_impl()
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{
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std::locale old_locale;
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std::locale tmp_locale(old_locale, new nonfinite_num_put<CharType>);
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std::locale new_locale(tmp_locale,
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new nonfinite_num_get<CharType>(trap_nan));
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std::basic_stringstream<CharType> ss;
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ss.imbue(new_locale);
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ValType a1 = std::numeric_limits<ValType>::quiet_NaN();
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ss << a1;
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ValType b1;
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ss >> b1;
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BOOST_CHECK(ss.rdstate() == std::ios_base::failbit);
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ss.clear();
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ss.str(S_(""));
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ValType a2 = std::numeric_limits<ValType>::signaling_NaN();
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ss << a2;
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ValType b2;
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ss >> b2;
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BOOST_CHECK(ss.rdstate() == std::ios_base::failbit);
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}
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//------------------------------------------------------------------------------
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} // anonymous namespace
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