1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // test numeric_limits
11 
12 // infinity()
13 
14 #include <limits>
15 #include <cfloat>
16 #include <cassert>
17 
18 template <class T>
19 void
test(T expected)20 test(T expected)
21 {
22     assert(std::numeric_limits<T>::infinity() == expected);
23     assert(std::numeric_limits<const T>::infinity() == expected);
24     assert(std::numeric_limits<volatile T>::infinity() == expected);
25     assert(std::numeric_limits<const volatile T>::infinity() == expected);
26 }
27 
28 extern float zero;
29 
main()30 int main()
31 {
32     test<bool>(false);
33     test<char>(0);
34     test<signed char>(0);
35     test<unsigned char>(0);
36     test<wchar_t>(0);
37 #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
38     test<char16_t>(0);
39     test<char32_t>(0);
40 #endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
41     test<short>(0);
42     test<unsigned short>(0);
43     test<int>(0);
44     test<unsigned int>(0);
45     test<long>(0);
46     test<unsigned long>(0);
47     test<long long>(0);
48     test<unsigned long long>(0);
49 #ifndef _LIBCPP_HAS_NO_INT128
50     test<__int128_t>(0);
51     test<__uint128_t>(0);
52 #endif
53     test<float>(1./zero);
54     test<double>(1./zero);
55     test<long double>(1./zero);
56 }
57 
58 float zero = 0;
59