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 #include "test_macros.h"
19 
20 template <class T>
21 void
test(T expected)22 test(T expected)
23 {
24     assert(std::numeric_limits<T>::infinity() == expected);
25     assert(std::numeric_limits<const T>::infinity() == expected);
26     assert(std::numeric_limits<volatile T>::infinity() == expected);
27     assert(std::numeric_limits<const volatile T>::infinity() == expected);
28 }
29 
30 extern float zero;
31 
main()32 int main()
33 {
34     test<bool>(false);
35     test<char>(0);
36     test<signed char>(0);
37     test<unsigned char>(0);
38     test<wchar_t>(0);
39 #if TEST_STD_VER > 17 && defined(__cpp_char8_t)
40     test<char8_t>(0);
41 #endif
42 #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
43     test<char16_t>(0);
44     test<char32_t>(0);
45 #endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
46     test<short>(0);
47     test<unsigned short>(0);
48     test<int>(0);
49     test<unsigned int>(0);
50     test<long>(0);
51     test<unsigned long>(0);
52     test<long long>(0);
53     test<unsigned long long>(0);
54 #ifndef _LIBCPP_HAS_NO_INT128
55     test<__int128_t>(0);
56     test<__uint128_t>(0);
57 #endif
58     test<float>(1.f/zero);
59     test<double>(1./zero);
60     test<long double>(1./zero);
61 }
62 
63 float zero = 0;
64