1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// test numeric_limits
// digits10
#include <limits>
#include <cfloat>
template <class T, int expected>
void
test()
{
static_assert(std::numeric_limits<T>::digits10 == expected, "digits10 test 1");
static_assert(std::numeric_limits<T>::is_bounded, "digits10 test 5");
static_assert(std::numeric_limits<const T>::digits10 == expected, "digits10 test 2");
static_assert(std::numeric_limits<const T>::is_bounded, "digits10 test 6");
static_assert(std::numeric_limits<volatile T>::digits10 == expected, "digits10 test 3");
static_assert(std::numeric_limits<volatile T>::is_bounded, "digits10 test 7");
static_assert(std::numeric_limits<const volatile T>::digits10 == expected, "digits10 test 4");
static_assert(std::numeric_limits<const volatile T>::is_bounded, "digits10 test 8");
}
int main()
{
test<bool, 0>();
test<char, 2>();
test<signed char, 2>();
test<unsigned char, 2>();
test<wchar_t, 5*sizeof(wchar_t)/2-1>(); // 4 -> 9 and 2 -> 4
#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
test<char16_t, 4>();
test<char32_t, 9>();
#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
test<short, 4>();
test<unsigned short, 4>();
test<int, 9>();
test<unsigned int, 9>();
test<long, sizeof(long) == 4 ? 9 : 18>();
test<unsigned long, sizeof(long) == 4 ? 9 : 19>();
test<long long, 18>();
test<unsigned long long, 19>();
#ifndef _LIBCPP_HAS_NO_INT128
test<__int128_t, 38>();
test<__uint128_t, 38>();
#endif
test<float, FLT_DIG>();
test<double, DBL_DIG>();
test<long double, LDBL_DIG>();
}
|
