68 lines
2.2 KiB
C++
68 lines
2.2 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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// Specializations shall be provided for each arithmetic type, both floating
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// point and integer, including bool. The member is_specialized shall be
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// true for all such specializations of numeric_limits.
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// Non-arithmetic standard types, such as complex<T> (26.3.2), shall not
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// have specializations.
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// From [numeric.limits]:
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// The value of each member of a specialization of numeric_limits on a cv
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// -qualified type cv T shall be equal to the value of the corresponding
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// member of the specialization on the unqualified type T.
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// More convenient to test it here.
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#include <limits>
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#include <complex>
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template <class T>
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void test()
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{
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static_assert(std::numeric_limits<T>::is_specialized,
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"std::numeric_limits<T>::is_specialized");
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static_assert(std::numeric_limits<const T>::is_specialized,
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"std::numeric_limits<const T>::is_specialized");
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static_assert(std::numeric_limits<volatile T>::is_specialized,
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"std::numeric_limits<volatile T>::is_specialized");
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static_assert(std::numeric_limits<const volatile T>::is_specialized,
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"std::numeric_limits<const volatile T>::is_specialized");
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}
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int main()
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{
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test<bool>();
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test<char>();
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test<wchar_t>();
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#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
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test<char16_t>();
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test<char32_t>();
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#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
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test<signed char>();
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test<unsigned char>();
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test<signed short>();
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test<unsigned short>();
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test<signed int>();
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test<unsigned int>();
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test<signed long>();
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test<unsigned long>();
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test<signed long long>();
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test<unsigned long long>();
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test<float>();
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test<double>();
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test<long double>();
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static_assert(!std::numeric_limits<std::complex<double> >::is_specialized,
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"!std::numeric_limits<std::complex<double> >::is_specialized");
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}
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