mirror of https://github.com/saitohirga/WSJT-X.git
343 lines
12 KiB
C++
343 lines
12 KiB
C++
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// Copyright 2011 Paul A. Bristow
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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 : 4127) // Expression is constant.
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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 <libs/math/test/almost_equal.ipp> // Similar to BOOST_CLOSE_FRACTION.
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#include <libs/math/test/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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#include <iomanip>
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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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// Test nonfinite_num_put and nonfinite_num_get facets by checking
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// loopback (output and re-input) of a few values,
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// but using all the built-in char and floating-point types.
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// Only the default output is used but various ostream options are tested seperately below.
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// Finite, infinite and NaN values (positive and negative) are used for the test.
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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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{ // Test finite using all the built-in char and floating-point types.
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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; // 1.2, -3.5, max, -max
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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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{ // Test infinity using all the built-in char and floating-point types.
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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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{ // Test NaN using all the built-in char and floating-point types.
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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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// Test a selection of stream output options comparing result with expected string.
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// Only uses CharType = char and ValType = double.
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// Other types have already been tested above.
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#define CHECKOUT(manips, expected)\
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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<char>(0)); /* default flags. */\
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std::locale new_locale(tmp_locale, new nonfinite_num_get<char>);\
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std::ostringstream ss;\
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ss.imbue(new_locale);\
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ss << manips;\
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std::basic_string<char> s = S_(expected);\
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BOOST_CHECK_EQUAL(ss.str(), s);\
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}\
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BOOST_AUTO_TEST_CASE(check_trap_nan)
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{ // Check that with trap_nan set, it really does throw exception.
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std::locale old_locale;
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std::locale tmp_locale(old_locale, new nonfinite_num_put<char>(trap_nan));
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std::locale new_locale(tmp_locale, new nonfinite_num_get<char>);
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std::ostringstream os;
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os.imbue(new_locale);
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os.exceptions(std::ios_base::badbit | std::ios_base::failbit); // Enable throwing exceptions.
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double nan = std::numeric_limits<double>::quiet_NaN();
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BOOST_MATH_CHECK_THROW((os << nan), std::runtime_error);
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// warning : in "check_trap_nan": exception std::runtime_error is expected
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} // BOOST_AUTO_TEST_CASE(check_trap_nan)
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BOOST_AUTO_TEST_CASE(check_trap_inf)
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{ // Check that with trap_nan set, it really does throw exception.
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std::locale old_locale;
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std::locale tmp_locale(old_locale, new nonfinite_num_put<char>(trap_infinity));
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std::locale new_locale(tmp_locale, new nonfinite_num_get<char>);
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std::ostringstream os;
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os.imbue(new_locale);
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os.exceptions(std::ios_base::badbit | std::ios_base::failbit); // Enable throwing exceptions.
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double inf = std::numeric_limits<double>::infinity();
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BOOST_MATH_CHECK_THROW((os << inf), std::runtime_error);
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// warning : in "check_trap_inf": exception std::runtime_error is expected.
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} // BOOST_AUTO_TEST_CASE(check_trap_nan_inf)
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BOOST_AUTO_TEST_CASE(output_tests)
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{
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// Positive zero.
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CHECKOUT(0, "0"); // integer zero.
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CHECKOUT(0., "0"); // double zero.
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double nan = std::numeric_limits<double>::quiet_NaN();
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double inf = std::numeric_limits<double>::infinity();
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CHECKOUT(inf, "inf"); // infinity.
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CHECKOUT(-inf, "-inf"); // infinity.
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CHECKOUT(std::showpos << inf, "+inf"); // infinity.
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CHECKOUT(std::setw(6) << std::showpos << inf, " +inf"); // infinity.
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CHECKOUT(std::right << std::setw(6) << std::showpos << inf, " +inf"); // infinity.
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CHECKOUT(std::left << std::setw(6) << std::showpos << inf, "+inf "); // infinity.
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CHECKOUT(std::left << std::setw(6) << std::setprecision(6) << inf, "inf "); // infinity.
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CHECKOUT(std::left << std::setw(6) << std::setfill('*') << std::setprecision(6) << inf, "inf***"); // infinity.
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CHECKOUT(std::right << std::setw(6) << std::setfill('*') << std::setprecision(6) << inf, "***inf"); // infinity.
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CHECKOUT(std::internal<< std::setw(6) << std::showpos << inf, "+ inf"); // infinity.
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CHECKOUT(std::internal<< std::setw(6) << std::setfill('*') << std::showpos << inf, "+**inf"); // infinity.
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CHECKOUT(std::internal<< std::setw(6) << std::setfill('*') << std::showpos << -inf, "-**inf"); // infinity.
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CHECKOUT(nan, "nan"); // nan
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CHECKOUT(std::setw(1) << nan, "nan"); // nan, even if width was too small.
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CHECKOUT(std::setprecision(10) << nan, "nan"); // setprecision has no effect.
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} // BOOST_AUTO_TEST_CASE(output_tests)
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} // anonymous namespace
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/*
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Output:
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test_nonfinite_io.cpp
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test_nonfinite_io.vcxproj -> J:\Cpp\MathToolkit\test\Math_test\Debug\test_nonfinite_io.exe
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Running 4 test cases...
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Platform: Win32
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Compiler: Microsoft Visual C++ version 10.0
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STL : Dinkumware standard library version 520
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Boost : 1.49.0
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Entering test suite "Master Test Suite"
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Entering test case "trap_test"
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Leaving test case "trap_test"; testing time: 7ms
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Entering test case "check_trap_nan"
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Leaving test case "check_trap_nan"
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Entering test case "check_trap_inf"
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Leaving test case "check_trap_inf"; testing time: 1ms
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Entering test case "output_tests"
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Leaving test case "output_tests"; testing time: 3ms
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Leaving test suite "Master Test Suite"
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*** No errors detected
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*/
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