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// min()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>::min() == expected);29 assert(std::numeric_limits<T>::is_bounded || !std::numeric_limits<T>::is_signed);30 assert(std::numeric_limits<const T>::min() == expected);31 assert(std::numeric_limits<const T>::is_bounded || !std::numeric_limits<const T>::is_signed);32 assert(std::numeric_limits<volatile T>::min() == expected);33 assert(std::numeric_limits<volatile T>::is_bounded || !std::numeric_limits<volatile T>::is_signed);34 assert(std::numeric_limits<const volatile T>::min() == expected);35 assert(std::numeric_limits<const volatile T>::is_bounded || !std::numeric_limits<const volatile T>::is_signed);36}37 38int main(int, char**)39{40 test<bool>(false);41 test<char>(CHAR_MIN);42 test<signed char>(SCHAR_MIN);43 test<unsigned char>(0);44#ifndef TEST_HAS_NO_WIDE_CHARACTERS45 test<wchar_t>(WCHAR_MIN);46#endif47#if TEST_STD_VER > 17 && defined(__cpp_char8_t)48 test<char8_t>(0);49#endif50 test<char16_t>(0);51 test<char32_t>(0);52 test<short>(SHRT_MIN);53 test<unsigned short>(0);54 test<int>(INT_MIN);55 test<unsigned int>(0);56 test<long>(LONG_MIN);57 test<unsigned long>(0);58 test<long long>(LLONG_MIN);59 test<unsigned long long>(0);60#ifndef TEST_HAS_NO_INT12861 test<__int128_t>(-__int128_t(__uint128_t(-1)/2) - 1);62 test<__uint128_t>(0);63#endif64 test<float>(FLT_MIN);65 test<double>(DBL_MIN);66 test<long double>(LDBL_MIN);67 68 return 0;69}70