1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// test numeric_limits
10
11// infinity()
12
13#include <limits>
14#include <cfloat>
15#include <cassert>
16
17#include "test_macros.h"
18
19template <class T>
20void
21test(T expected)
22{
23 assert(std::numeric_limits<T>::infinity() == expected);
24 assert(std::numeric_limits<const T>::infinity() == expected);
25 assert(std::numeric_limits<volatile T>::infinity() == expected);
26 assert(std::numeric_limits<const volatile T>::infinity() == expected);
27}
28
29extern float zero;
30
31int main(int, char**)
32{
33 test<bool>(false);
34 test<char>(0);
35 test<signed char>(0);
36 test<unsigned char>(0);
37 test<wchar_t>(0);
38#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
39 test<char8_t>(0);
40#endif
41 test<char16_t>(0);
42 test<char32_t>(0);
43 test<short>(0);
44 test<unsigned short>(0);
45 test<int>(0);
46 test<unsigned int>(0);
47 test<long>(0);
48 test<unsigned long>(0);
49 test<long long>(0);
50 test<unsigned long long>(0);
51#ifndef TEST_HAS_NO_INT128
52 test<__int128_t>(0);
53 test<__uint128_t>(0);
54#endif
55 test<float>(1.f/zero);
56 test<double>(1./zero);
57 test<long double>(1./zero);
58
59 return 0;
60}
61
62float zero = 0;
63

source code of libcxx/test/std/language.support/support.limits/limits/numeric.limits.members/infinity.pass.cpp