cxx/test/utilities/meta/meta.unary/meta.unary.prop/is_signed.pass.cpp

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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// type_traits
// is_signed
#include <type_traits>
template <class T>
void test_is_signed()
{
static_assert( std::is_signed<T>::value, "");
static_assert( std::is_signed<const T>::value, "");
static_assert( std::is_signed<volatile T>::value, "");
static_assert( std::is_signed<const volatile T>::value, "");
}
template <class T>
void test_is_not_signed()
{
static_assert(!std::is_signed<T>::value, "");
static_assert(!std::is_signed<const T>::value, "");
static_assert(!std::is_signed<volatile T>::value, "");
static_assert(!std::is_signed<const volatile T>::value, "");
}
class Class
{
public:
~Class();
};
int main()
{
test_is_not_signed<void>();
test_is_not_signed<int&>();
test_is_not_signed<Class>();
test_is_not_signed<int*>();
test_is_not_signed<const int*>();
test_is_not_signed<char[3]>();
test_is_not_signed<char[3]>();
test_is_not_signed<bool>();
test_is_not_signed<unsigned>();
test_is_signed<int>();
test_is_signed<double>();
}