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https://github.com/boostorg/multiprecision.git
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645fe8865c
Make negating an unsigned int an error, and fix resulting test failures. Change allocator defaults to be void when the allocator is not actually required. [SVN r81070]
272 lines
9.4 KiB
C++
272 lines
9.4 KiB
C++
///////////////////////////////////////////////////////////////
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// Copyright 2012 John Maddock. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_
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//
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#ifndef BOOST_MULTIPRECISION_TEST_HPP
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#define BOOST_MULTIPRECISION_TEST_HPP
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#include <limits>
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#include <cmath>
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#include <typeinfo>
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#include <boost/detail/lightweight_test.hpp>
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#include <boost/current_function.hpp>
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#include <boost/static_assert.hpp>
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#include <boost/utility/enable_if.hpp>
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#include <boost/type_traits/is_unsigned.hpp>
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#include <boost/multiprecision/number.hpp>
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namespace detail{
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template <class T>
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inline typename boost::disable_if_c<boost::is_unsigned<T>::value || boost::multiprecision::is_unsigned_number<T>::value, T>::type
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abs(const T& a)
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{
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return a < 0 ? -a : a;
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}
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template <class T>
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inline typename boost::enable_if_c<boost::is_unsigned<T>::value || boost::multiprecision::is_unsigned_number<T>::value, T>::type
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abs(const T& a)
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{
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return a;
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}
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}
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template <class T>
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T relative_error(T a, T b)
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{
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using std::abs;
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using detail::abs;
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T min_val = (std::numeric_limits<T>::min)();
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T max_val = (std::numeric_limits<T>::max)();
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if((a != 0) && (b != 0))
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{
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// TODO: use isfinite:
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if(abs(b) >= max_val)
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{
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if(abs(a) >= max_val)
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return 0; // one infinity is as good as another!
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}
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// If the result is denormalised, treat all denorms as equivalent:
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if((a < min_val) && (a > 0))
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a = min_val;
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else if((a > -min_val) && (a < 0))
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a = -min_val;
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if((b < min_val) && (b > 0))
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b = min_val;
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else if((b > -min_val) && (b < 0))
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b = -min_val;
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return (std::max)(abs(T((a-b)/a)), abs(T((a-b)/b))) / std::numeric_limits<T>::epsilon();
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}
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// Handle special case where one or both are zero:
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if(min_val == 0)
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return abs(T(a-b));
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if(abs(a) < min_val)
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a = min_val;
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if(abs(b) < min_val)
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b = min_val;
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return (std::max)(abs(T((a-b)/a)), abs(T((a-b)/b))) / std::numeric_limits<T>::epsilon();
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}
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enum
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{
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warn_on_fail,
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error_on_fail,
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abort_on_fail
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};
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template <class T>
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inline T epsilon_of(const T&)
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{
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BOOST_STATIC_ASSERT(std::numeric_limits<T>::is_specialized);
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return std::numeric_limits<T>::epsilon();
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}
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template <class T>
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inline int digits_of(const T&)
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{
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return std::numeric_limits<T>::is_specialized ? std::numeric_limits<T>::digits10 + 2 : std::numeric_limits<long double>::digits10 + 2;
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}
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inline std::ostream& report_where(const char* file, int line, const char* function)
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{
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if(function)
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BOOST_LIGHTWEIGHT_TEST_OSTREAM << "In function: "<< function << std::endl;
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BOOST_LIGHTWEIGHT_TEST_OSTREAM << file << ":" << line;
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return BOOST_LIGHTWEIGHT_TEST_OSTREAM;
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}
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#define BOOST_MP_REPORT_WHERE report_where(__FILE__, __LINE__, BOOST_CURRENT_FUNCTION)
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inline void report_severity(int severity)
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{
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if(severity == error_on_fail)
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++boost::detail::test_errors();
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else if(severity == abort_on_fail)
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{
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++boost::detail::test_errors();
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abort();
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}
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}
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#define BOOST_MP_REPORT_SEVERITY(severity) report_severity(severity)
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template <class E>
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void report_unexpected_exception(const E& e, int severity, const char* file, int line, const char* function)
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{
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report_where(file, line, function) << " Unexpected exception of type " << typeid(e).name() << std::endl;
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BOOST_LIGHTWEIGHT_TEST_OSTREAM << "Errot message was: " << e.what() << std::endl;
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BOOST_MP_REPORT_SEVERITY(severity);
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}
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#define BOOST_MP_UNEXPECTED_EXCEPTION_CHECK(severity) \
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catch(const std::exception& e) \
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{ report_unexpected_exception(e, severity, __FILE__, __LINE__, BOOST_CURRENT_FUNCTION); }\
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catch(...)\
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{ std::cout << "Exception of unknown type was thrown" << std::endl; report_severity(severity); }
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#define BOOST_CHECK_IMP(x, severity)\
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try{ if(x){}else{\
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BOOST_MP_REPORT_WHERE << " Failed predicate: " << BOOST_STRINGIZE(x) << std::endl;\
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BOOST_MP_REPORT_SEVERITY(severity);\
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}\
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}BOOST_MP_UNEXPECTED_EXCEPTION_CHECK(severity)
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#define BOOST_CHECK(x) BOOST_CHECK_IMP(x, error_on_fail)
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#define BOOST_WARN(x) BOOST_CHECK_IMP(x, warn_on_fail)
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#define BOOST_REQUIRE(x) BOOST_CHECK_IMP(x, abort_on_fail)
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#define BOOST_CLOSE_IMP(x, y, tol, severity)\
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try{ if(relative_error(x, y) > tol){\
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BOOST_MP_REPORT_WHERE << " Failed check for closeness: \n" \
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<< std::setprecision(digits_of(x)) << std::scientific\
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<< "Value of LHS was: " << x << "\n"\
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<< "Value of RHS was: " << y << "\n"\
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<< std::setprecision(5) << std::fixed\
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<< "Relative error was: " << relative_error(x, y) << "eps\n"\
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<< "Tolerance was: " << tol << "eps" << std::endl;\
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BOOST_MP_REPORT_SEVERITY(severity);\
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}\
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}BOOST_MP_UNEXPECTED_EXCEPTION_CHECK(severity)
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#define BOOST_EQUAL_IMP(x, y, severity)\
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try{ if(x != y){\
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BOOST_MP_REPORT_WHERE << " Failed check for equality: \n" \
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<< std::setprecision(digits_of(x)) << std::scientific\
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<< "Value of LHS was: " << x << "\n"\
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<< "Value of RHS was: " << y << "\n"\
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<< std::setprecision(3) << std::endl;\
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BOOST_MP_REPORT_SEVERITY(severity);\
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}\
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}BOOST_MP_UNEXPECTED_EXCEPTION_CHECK(severity)
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#define BOOST_NE_IMP(x, y, severity)\
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try{ if(!(x != y)){\
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BOOST_MP_REPORT_WHERE << " Failed check for non-equality: \n" \
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<< std::setprecision(digits_of(x)) << std::scientific\
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<< "Value of LHS was: " << x << "\n"\
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<< "Value of RHS was: " << y << "\n"\
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<< std::setprecision(3) << std::endl;\
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BOOST_MP_REPORT_SEVERITY(severity);\
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}\
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}BOOST_MP_UNEXPECTED_EXCEPTION_CHECK(severity)
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#define BOOST_LT_IMP(x, y, severity)\
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try{ if(!(x < y)){\
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BOOST_MP_REPORT_WHERE << " Failed check for less than: \n" \
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<< std::setprecision(digits_of(x)) << std::scientific\
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<< "Value of LHS was: " << x << "\n"\
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<< "Value of RHS was: " << y << "\n"\
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<< std::setprecision(3) << std::endl;\
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BOOST_MP_REPORT_SEVERITY(severity);\
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}\
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}BOOST_MP_UNEXPECTED_EXCEPTION_CHECK(severity)
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#define BOOST_GT_IMP(x, y, severity)\
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try{ if(!(x > y)){\
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BOOST_MP_REPORT_WHERE << " Failed check for greater than: \n" \
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<< std::setprecision(digits_of(x)) << std::scientific\
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<< "Value of LHS was: " << x << "\n"\
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<< "Value of RHS was: " << y << "\n"\
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<< std::setprecision(3) << std::endl;\
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BOOST_MP_REPORT_SEVERITY(severity);\
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}\
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}BOOST_MP_UNEXPECTED_EXCEPTION_CHECK(severity)
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#define BOOST_LE_IMP(x, y, severity)\
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try{ if(!(x <= y)){\
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BOOST_MP_REPORT_WHERE << " Failed check for less-than-equal-to: \n" \
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<< std::setprecision(digits_of(x)) << std::scientific\
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<< "Value of LHS was: " << x << "\n"\
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<< "Value of RHS was: " << y << "\n"\
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<< std::setprecision(3) << std::endl;\
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BOOST_MP_REPORT_SEVERITY(severity);\
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}\
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}BOOST_MP_UNEXPECTED_EXCEPTION_CHECK(severity)
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#define BOOST_GE_IMP(x, y, severity)\
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try{ if(!(x >= y)){\
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BOOST_MP_REPORT_WHERE << " Failed check for greater-than-equal-to \n" \
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<< std::setprecision(digits_of(x)) << std::scientific\
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<< "Value of LHS was: " << x << "\n"\
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<< "Value of RHS was: " << y << "\n"\
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<< std::setprecision(3) << std::endl;\
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BOOST_MP_REPORT_SEVERITY(severity);\
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}\
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}BOOST_MP_UNEXPECTED_EXCEPTION_CHECK(severity)
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#define BOOST_MT_CHECK_THROW_IMP(x, E, severity)\
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try{ \
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x;\
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BOOST_MP_REPORT_WHERE << " Expected exception not thrown in expression " << BOOST_STRINGIZE(x) << std::endl;\
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BOOST_MP_REPORT_SEVERITY(severity);\
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}\
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catch(const E&){}\
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BOOST_MP_UNEXPECTED_EXCEPTION_CHECK(severity)
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#define BOOST_CHECK_CLOSE(x, y, tol) BOOST_CLOSE_IMP(x, y, ((tol / (100 * epsilon_of(x)))), error_on_fail)
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#define BOOST_WARN_CLOSE(x, y, tol) BOOST_CLOSE_IMP(x, y, (tol / (100 * epsilon_of(x))), warn_on_fail)
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#define BOOST_REQUIRE_CLOSE(x, y, tol) BOOST_CLOSE_IMP(x, y, (tol / (100 * epsilon_of(x))), abort_on_fail)
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#define BOOST_CHECK_CLOSE_FRACTION(x, y, tol) BOOST_CLOSE_IMP(x, y, ((tol / (epsilon_of(x)))), error_on_fail)
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#define BOOST_WARN_CLOSE_FRACTION(x, y, tol) BOOST_CLOSE_IMP(x, y, (tol / (epsilon_of(x))), warn_on_fail)
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#define BOOST_REQUIRE_CLOSE_FRACTION(x, y, tol) BOOST_CLOSE_IMP(x, y, (tol / (epsilon_of(x))), abort_on_fail)
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#define BOOST_CHECK_EQUAL(x, y) BOOST_EQUAL_IMP(x, y, error_on_fail)
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#define BOOST_WARN_EQUAL(x, y) BOOST_EQUAL_IMP(x, y, warn_on_fail)
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#define BOOST_REQUIRE_EQUAL(x, y) BOOST_EQUAL_IMP(x, y, abort_on_fail)
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#define BOOST_CHECK_NE(x, y) BOOST_NE_IMP(x, y, error_on_fail)
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#define BOOST_WARN_NE(x, y) BOOST_NE_IMP(x, y, warn_on_fail)
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#define BOOST_REQUIRE_NE(x, y) BOOST_NE_IMP(x, y, abort_on_fail)
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#define BOOST_CHECK_LT(x, y) BOOST_LT_IMP(x, y, error_on_fail)
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#define BOOST_WARN_LT(x, y) BOOST_LT_IMP(x, y, warn_on_fail)
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#define BOOST_REQUIRE_LT(x, y) BOOST_LT_IMP(x, y, abort_on_fail)
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#define BOOST_CHECK_GT(x, y) BOOST_GT_IMP(x, y, error_on_fail)
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#define BOOST_WARN_GT(x, y) BOOST_GT_IMP(x, y, warn_on_fail)
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#define BOOST_REQUIRE_GT(x, y) BOOST_GT_IMP(x, y, abort_on_fail)
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#define BOOST_CHECK_LE(x, y) BOOST_LE_IMP(x, y, error_on_fail)
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#define BOOST_WARN_LE(x, y) BOOST_LE_IMP(x, y, warn_on_fail)
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#define BOOST_REQUIRE_LE(x, y) BOOST_LE_IMP(x, y, abort_on_fail)
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#define BOOST_CHECK_GE(x, y) BOOST_GE_IMP(x, y, error_on_fail)
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#define BOOST_WARN_GE(x, y) BOOST_GE_IMP(x, y, warn_on_fail)
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#define BOOST_REQUIRE_GE(x, y) BOOST_GE_IMP(x, y, abort_on_fail)
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#define BOOST_CHECK_THROW(x, E) BOOST_MT_CHECK_THROW_IMP(x, E, error_on_fail)
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#define BOOST_WARN_THROW(x, E) BOOST_MT_CHECK_THROW_IMP(x, E, warn_on_fail)
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#define BOOST_REQUIRE_THROW(x, E) BOOST_MT_CHECK_THROW_IMP(x, E, abort_on_fail)
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#endif
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