50 lines
1.5 KiB
C++
50 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// test numeric_limits
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// digits
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#include <limits>
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#include <cfloat>
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template <class T, int expected>
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void
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test()
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{
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static_assert(std::numeric_limits<T>::digits == expected, "digits test 1");
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static_assert(std::numeric_limits<const T>::digits == expected, "digits test 2");
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static_assert(std::numeric_limits<volatile T>::digits == expected, "digits test 3");
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static_assert(std::numeric_limits<const volatile T>::digits == expected, "digits test 4");
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}
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int main()
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{
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test<bool, 1>();
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test<char, std::numeric_limits<char>::is_signed ? 7 : 8>();
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test<signed char, 7>();
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test<unsigned char, 8>();
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test<wchar_t, std::numeric_limits<wchar_t>::is_signed ? 31 : 32>();
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#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
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test<char16_t, 16>();
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test<char32_t, 32>();
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#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
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test<short, 15>();
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test<unsigned short, 16>();
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test<int, 31>();
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test<unsigned int, 32>();
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test<long, sizeof(long) == 4 ? 31 : 63>();
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test<unsigned long, sizeof(long) == 4 ? 32 : 64>();
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test<long long, 63>();
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test<unsigned long long, 64>();
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test<float, FLT_MANT_DIG>();
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test<double, DBL_MANT_DIG>();
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test<long double, LDBL_MANT_DIG>();
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}
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