70 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// test numeric_limits10 11// max()12 13#include <limits>14#include <climits>15#include <cfloat>16#include <cassert>17 18#include "test_macros.h"19 20#ifndef TEST_HAS_NO_WIDE_CHARACTERS21# include <cwchar>22#endif23 24template <class T>25void26test(T expected)27{28 assert(std::numeric_limits<T>::max() == expected);29 assert(std::numeric_limits<T>::is_bounded);30 assert(std::numeric_limits<const T>::max() == expected);31 assert(std::numeric_limits<const T>::is_bounded);32 assert(std::numeric_limits<volatile T>::max() == expected);33 assert(std::numeric_limits<volatile T>::is_bounded);34 assert(std::numeric_limits<const volatile T>::max() == expected);35 assert(std::numeric_limits<const volatile T>::is_bounded);36}37 38int main(int, char**)39{40 test<bool>(true);41 test<char>(CHAR_MAX);42 test<signed char>(SCHAR_MAX);43 test<unsigned char>(UCHAR_MAX);44#ifndef TEST_HAS_NO_WIDE_CHARACTERS45 test<wchar_t>(WCHAR_MAX);46#endif47#if TEST_STD_VER > 17 && defined(__cpp_char8_t)48 test<char8_t>(UCHAR_MAX); // ??49#endif50 test<char16_t>(USHRT_MAX);51 test<char32_t>(UINT_MAX);52 test<short>(SHRT_MAX);53 test<unsigned short>(USHRT_MAX);54 test<int>(INT_MAX);55 test<unsigned int>(UINT_MAX);56 test<long>(LONG_MAX);57 test<unsigned long>(ULONG_MAX);58 test<long long>(LLONG_MAX);59 test<unsigned long long>(ULLONG_MAX);60#ifndef TEST_HAS_NO_INT12861 test<__int128_t>(__int128_t(__uint128_t(-1)/2));62 test<__uint128_t>(__uint128_t(-1));63#endif64 test<float>(FLT_MAX);65 test<double>(DBL_MAX);66 test<long double>(LDBL_MAX);67 68 return 0;69}70