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
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// test numeric_limits
// digits
#include <limits>
#include <cfloat>
#include "test_macros.h"
template <class T, int expected>
void
test()
{
static_assert(std::numeric_limits<T>::digits == expected, "digits test 1");
static_assert(std::numeric_limits<const T>::digits == expected, "digits test 2");
static_assert(std::numeric_limits<volatile T>::digits == expected, "digits test 3");
static_assert(std::numeric_limits<const volatile T>::digits == expected, "digits test 4");
}
int main(int, char**)
{
test<bool, 1>();
test<char, std::numeric_limits<char>::is_signed ? 7 : 8>();
test<signed char, 7>();
test<unsigned char, 8>();
test<wchar_t, std::numeric_limits<wchar_t>::is_signed ? sizeof(wchar_t)*8-1 : sizeof(wchar_t)*8>();
#if TEST_STD_VER > 17 && defined(__cpp_char8_t)
test<char8_t, 8>();
#endif
test<char16_t, 16>();
test<char32_t, 32>();
test<short, 15>();
test<unsigned short, 16>();
test<int, 31>();
test<unsigned int, 32>();
test<long, sizeof(long) == 4 ? 31 : 63>();
test<unsigned long, sizeof(long) == 4 ? 32 : 64>();
test<long long, 63>();
test<unsigned long long, 64>();
#ifndef TEST_HAS_NO_INT128
test<__int128_t, 127>();
test<__uint128_t, 128>();
#endif
test<float, FLT_MANT_DIG>();
test<double, DBL_MANT_DIG>();
test<long double, LDBL_MANT_DIG>();
return 0;
}
|
