47 lines · cpp
1//===-- Unittests for Limits ----------------------------------------------===//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#include "src/__support/CPP/limits.h"10#include "src/__support/big_int.h"11#include "src/__support/macros/config.h"12#include "src/__support/macros/properties/types.h" // LIBC_TYPES_HAS_INT12813#include "test/UnitTest/Test.h"14 15namespace LIBC_NAMESPACE_DECL {16 17// This just checks against the C spec, almost all implementations will surpass18// this.19TEST(LlvmLibcLimitsTest, LimitsFollowSpec) {20 ASSERT_EQ(cpp::numeric_limits<int>::max(), INT_MAX);21 ASSERT_EQ(cpp::numeric_limits<int>::min(), INT_MIN);22 23 ASSERT_EQ(cpp::numeric_limits<unsigned int>::max(), UINT_MAX);24 25 ASSERT_EQ(cpp::numeric_limits<long>::max(), LONG_MAX);26 ASSERT_EQ(cpp::numeric_limits<long>::min(), LONG_MIN);27 28 ASSERT_EQ(cpp::numeric_limits<unsigned long>::max(), ULONG_MAX);29 30 ASSERT_EQ(cpp::numeric_limits<long long>::max(), LLONG_MAX);31 ASSERT_EQ(cpp::numeric_limits<long long>::min(), LLONG_MIN);32 33 ASSERT_EQ(cpp::numeric_limits<unsigned long long>::max(), ULLONG_MAX);34}35 36TEST(LlvmLibcLimitsTest, UInt128Limits) {37 auto umax128 = cpp::numeric_limits<LIBC_NAMESPACE::UInt<128>>::max();38 auto umax64 = LIBC_NAMESPACE::UInt<128>(cpp::numeric_limits<uint64_t>::max());39 EXPECT_GT(umax128, umax64);40 ASSERT_EQ(~LIBC_NAMESPACE::UInt<128>(0), umax128);41#ifdef LIBC_TYPES_HAS_INT12842 ASSERT_EQ(~__uint128_t(0), cpp::numeric_limits<__uint128_t>::max());43#endif // LIBC_TYPES_HAS_INT12844}45 46} // namespace LIBC_NAMESPACE_DECL47