1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10// test numeric_limits 11 12// epsilon() 13 14#include <limits> 15#include <cfloat> 16#include <cassert> 17 18template <class T> 19void 20test(T expected) 21{ 22 assert(std::numeric_limits<T>::epsilon() == expected); 23 assert(std::numeric_limits<const T>::epsilon() == expected); 24 assert(std::numeric_limits<volatile T>::epsilon() == expected); 25 assert(std::numeric_limits<const volatile T>::epsilon() == expected); 26} 27 28int main() 29{ 30 test<bool>(false); 31 test<char>(0); 32 test<signed char>(0); 33 test<unsigned char>(0); 34 test<wchar_t>(0); 35#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 36 test<char16_t>(0); 37 test<char32_t>(0); 38#endif // _LIBCPP_HAS_NO_UNICODE_CHARS 39 test<short>(0); 40 test<unsigned short>(0); 41 test<int>(0); 42 test<unsigned int>(0); 43 test<long>(0); 44 test<unsigned long>(0); 45 test<long long>(0); 46 test<unsigned long long>(0); 47#ifndef _LIBCPP_HAS_NO_INT128 48 test<__int128_t>(0); 49 test<__uint128_t>(0); 50#endif 51 test<float>(FLT_EPSILON); 52 test<double>(DBL_EPSILON); 53 test<long double>(LDBL_EPSILON); 54} 55