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123 lines
4.7 KiB
C++
123 lines
4.7 KiB
C++
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// Copyright (c) 2006 Johan Rade
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// Copyright (c) 2011 Paul A. Bristow incorporated 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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//#ifdef _MSC_VER
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//# pragma warning(disable : 4127 4511 4512 4701 4702)
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//#endif
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#define BOOST_TEST_MAIN
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#include <limits>
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#include <locale>
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#include <string>
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#include <boost/lexical_cast.hpp>
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#include <boost/test/auto_unit_test.hpp>
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#include <boost/math/special_functions/nonfinite_num_facets.hpp>
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#include <boost/math/special_functions/sign.hpp>
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#include <boost/math/special_functions/fpclassify.hpp>
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#include "almost_equal.ipp"
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#include "s_.ipp"
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namespace {
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// the anonymous namespace resolves ambiguities on platforms
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// with fpclassify etc functions at global scope
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using boost::lexical_cast;
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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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template<class CharType, class ValType> void lexical_cast_test_impl();
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BOOST_AUTO_TEST_CASE(lexical_cast_test)
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{
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lexical_cast_test_impl<char, float>();
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lexical_cast_test_impl<char, double>();
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lexical_cast_test_impl<char, long double>();
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lexical_cast_test_impl<wchar_t, float>();
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lexical_cast_test_impl<wchar_t, double>();
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lexical_cast_test_impl<wchar_t, long double>();
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}
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template<class CharType, class ValType> void lexical_cast_test_impl()
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{
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if((std::numeric_limits<ValType>::has_infinity == 0) || (std::numeric_limits<ValType>::infinity() == 0))
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return;
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if((std::numeric_limits<ValType>::has_quiet_NaN == 0) || (std::numeric_limits<ValType>::quiet_NaN() == 0))
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return;
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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>(signed_zero));
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std::locale new_locale(tmp_locale, new nonfinite_num_get<CharType>);
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std::locale::global(new_locale);
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ValType a1 = static_cast<ValType>(0);
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ValType a2 = static_cast<ValType>(13);
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ValType a3 = std::numeric_limits<ValType>::infinity();
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ValType a4 = std::numeric_limits<ValType>::quiet_NaN();
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ValType a5 = std::numeric_limits<ValType>::signaling_NaN();
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ValType a6 = (changesign)(static_cast<ValType>(0));
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ValType a7 = static_cast<ValType>(-57);
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ValType a8 = -std::numeric_limits<ValType>::infinity();
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ValType a9 = (changesign)(std::numeric_limits<ValType>::quiet_NaN()); // -NaN
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ValType a10 = (changesign)(std::numeric_limits<ValType>::signaling_NaN()); // -NaN
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std::basic_string<CharType> s1 = S_("0");
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std::basic_string<CharType> s2 = S_("13");
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std::basic_string<CharType> s3 = S_("inf");
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std::basic_string<CharType> s4 = S_("nan");
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std::basic_string<CharType> s5 = S_("nan");
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std::basic_string<CharType> s6 = S_("-0");
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std::basic_string<CharType> s7 = S_("-57");
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std::basic_string<CharType> s8 = S_("-inf");
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std::basic_string<CharType> s9 = S_("-nan");
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std::basic_string<CharType> s10 = S_("-nan");
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BOOST_CHECK(lexical_cast<std::basic_string<CharType> >(a1) == s1);
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BOOST_CHECK(lexical_cast<std::basic_string<CharType> >(a2) == s2);
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BOOST_CHECK(lexical_cast<std::basic_string<CharType> >(a3) == s3);
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BOOST_CHECK(lexical_cast<std::basic_string<CharType> >(a4) == s4);
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BOOST_CHECK(lexical_cast<std::basic_string<CharType> >(a5) == s5);
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BOOST_CHECK(lexical_cast<std::basic_string<CharType> >(a6) == s6);
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BOOST_CHECK(lexical_cast<std::basic_string<CharType> >(a7) == s7);
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BOOST_CHECK(lexical_cast<std::basic_string<CharType> >(a8) == s8);
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BOOST_CHECK(lexical_cast<std::basic_string<CharType> >(a9) == s9);
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BOOST_CHECK(lexical_cast<std::basic_string<CharType> >(a10) == s10);
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BOOST_CHECK(lexical_cast<ValType>(s1) == a1);
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BOOST_CHECK(!(signbit)(lexical_cast<ValType>(s1)));
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BOOST_CHECK(lexical_cast<ValType>(s2) == a2);
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BOOST_CHECK(lexical_cast<ValType>(s3) == a3);
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BOOST_CHECK((isnan)(lexical_cast<ValType>(s4)));
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BOOST_CHECK(!(signbit)(lexical_cast<ValType>(s4)));
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BOOST_CHECK((isnan)(lexical_cast<ValType>(s5)));
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BOOST_CHECK(!(signbit)(lexical_cast<ValType>(s5)));
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BOOST_CHECK(lexical_cast<ValType>(a6) == a6);
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BOOST_CHECK((signbit)(lexical_cast<ValType>(s6)));
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BOOST_CHECK(lexical_cast<ValType>(s7) == a7);
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BOOST_CHECK(lexical_cast<ValType>(s8) == a8);
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BOOST_CHECK((isnan)(lexical_cast<ValType>(s9)));
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BOOST_CHECK((signbit)(lexical_cast<ValType>(s9)));
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BOOST_CHECK((isnan)(lexical_cast<ValType>(s10)));
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BOOST_CHECK((signbit)(lexical_cast<ValType>(s10)));
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std::locale::global(old_locale);
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}
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//------------------------------------------------------------------------------
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} // anonymous namespace
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