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// The default numeric_limits<T> template shall have all members, but with
13// 0 or false values.
14
15#include <limits>
16#include <cassert>
17
18struct A
19{
20    A(int i = 0) : data_(i) {}
21    int data_;
22};
23
24bool operator == (const A& x, const A& y) {return x.data_ == y.data_;}
25
26int main()
27{
28    static_assert(std::numeric_limits<A>::is_specialized == false,
29                 "std::numeric_limits<A>::is_specialized == false");
30    assert(std::numeric_limits<A>::min() == A());
31    assert(std::numeric_limits<A>::max() == A());
32    assert(std::numeric_limits<A>::lowest() == A());
33    static_assert(std::numeric_limits<A>::digits == 0,
34                 "std::numeric_limits<A>::digits == 0");
35    static_assert(std::numeric_limits<A>::digits10 == 0,
36                 "std::numeric_limits<A>::digits10 == 0");
37    static_assert(std::numeric_limits<A>::max_digits10 == 0,
38                 "std::numeric_limits<A>::max_digits10 == 0");
39    static_assert(std::numeric_limits<A>::is_signed == false,
40                 "std::numeric_limits<A>::is_signed == false");
41    static_assert(std::numeric_limits<A>::is_integer == false,
42                 "std::numeric_limits<A>::is_integer == false");
43    static_assert(std::numeric_limits<A>::is_exact == false,
44                 "std::numeric_limits<A>::is_exact == false");
45    static_assert(std::numeric_limits<A>::radix == 0,
46                 "std::numeric_limits<A>::radix == 0");
47    assert(std::numeric_limits<A>::epsilon() == A());
48    assert(std::numeric_limits<A>::round_error() == A());
49    static_assert(std::numeric_limits<A>::min_exponent == 0,
50                 "std::numeric_limits<A>::min_exponent == 0");
51    static_assert(std::numeric_limits<A>::min_exponent10 == 0,
52                 "std::numeric_limits<A>::min_exponent10 == 0");
53    static_assert(std::numeric_limits<A>::max_exponent == 0,
54                 "std::numeric_limits<A>::max_exponent == 0");
55    static_assert(std::numeric_limits<A>::max_exponent10 == 0,
56                 "std::numeric_limits<A>::max_exponent10 == 0");
57    static_assert(std::numeric_limits<A>::has_infinity == false,
58                 "std::numeric_limits<A>::has_infinity == false");
59    static_assert(std::numeric_limits<A>::has_quiet_NaN == false,
60                 "std::numeric_limits<A>::has_quiet_NaN == false");
61    static_assert(std::numeric_limits<A>::has_signaling_NaN == false,
62                 "std::numeric_limits<A>::has_signaling_NaN == false");
63    static_assert(std::numeric_limits<A>::has_denorm == std::denorm_absent,
64                 "std::numeric_limits<A>::has_denorm == std::denorm_absent");
65    static_assert(std::numeric_limits<A>::has_denorm_loss == false,
66                 "std::numeric_limits<A>::has_denorm_loss == false");
67    assert(std::numeric_limits<A>::infinity() == A());
68    assert(std::numeric_limits<A>::quiet_NaN() == A());
69    assert(std::numeric_limits<A>::signaling_NaN() == A());
70    assert(std::numeric_limits<A>::denorm_min() == A());
71    static_assert(std::numeric_limits<A>::is_iec559 == false,
72                 "std::numeric_limits<A>::is_iec559 == false");
73    static_assert(std::numeric_limits<A>::is_bounded == false,
74                 "std::numeric_limits<A>::is_bounded == false");
75    static_assert(std::numeric_limits<A>::is_modulo == false,
76                 "std::numeric_limits<A>::is_modulo == false");
77    static_assert(std::numeric_limits<A>::traps == false,
78                 "std::numeric_limits<A>::traps == false");
79    static_assert(std::numeric_limits<A>::tinyness_before == false,
80                 "std::numeric_limits<A>::tinyness_before == false");
81    static_assert(std::numeric_limits<A>::round_style == std::round_toward_zero,
82                 "std::numeric_limits<A>::round_style == std::round_toward_zero");
83}
84