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 // max_digits10
13
14 #include <limits>
15 #include <cfloat>
16
17 template <class T, int expected>
18 void
test()19 test()
20 {
21 static_assert(std::numeric_limits<T>::max_digits10 == expected, "max_digits10 test 1");
22 static_assert(std::numeric_limits<const T>::max_digits10 == expected, "max_digits10 test 2");
23 static_assert(std::numeric_limits<volatile T>::max_digits10 == expected, "max_digits10 test 3");
24 static_assert(std::numeric_limits<const volatile T>::max_digits10 == expected, "max_digits10 test 4");
25 }
26
main()27 int main()
28 {
29 test<bool, 0>();
30 test<char, 0>();
31 test<signed char, 0>();
32 test<unsigned char, 0>();
33 test<wchar_t, 0>();
34 #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
35 test<char16_t, 0>();
36 test<char32_t, 0>();
37 #endif // _LIBCPP_HAS_NO_UNICODE_CHARS
38 test<short, 0>();
39 test<unsigned short, 0>();
40 test<int, 0>();
41 test<unsigned int, 0>();
42 test<long, 0>();
43 test<unsigned long, 0>();
44 test<long long, 0>();
45 test<unsigned long long, 0>();
46 #ifndef _LIBCPP_HAS_NO_INT128
47 test<__int128_t, 0>();
48 test<__uint128_t, 0>();
49 #endif
50 test<float, 2+(FLT_MANT_DIG * 30103)/100000>();
51 test<double, 2+(DBL_MANT_DIG * 30103)/100000>();
52 test<long double, 2+(LDBL_MANT_DIG * 30103)/100000>();
53 }
54