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 // The default numeric_limits<T> template shall have all members, but with
12 // 0 or false values.
13
14 #include <limits>
15 #include <cassert>
16
17 #include "test_macros.h"
18
19 struct A
20 {
AA21 A(int i = 0) : data_(i) {}
22 int data_;
23 };
24
operator ==(const A & x,const A & y)25 bool operator == (const A& x, const A& y) {return x.data_ == y.data_;}
26
main(int,char **)27 int main(int, char**)
28 {
29 static_assert(std::numeric_limits<A>::is_specialized == false,
30 "std::numeric_limits<A>::is_specialized == false");
31 assert(std::numeric_limits<A>::min() == A());
32 assert(std::numeric_limits<A>::max() == A());
33 assert(std::numeric_limits<A>::lowest() == A());
34 static_assert(std::numeric_limits<A>::digits == 0,
35 "std::numeric_limits<A>::digits == 0");
36 static_assert(std::numeric_limits<A>::digits10 == 0,
37 "std::numeric_limits<A>::digits10 == 0");
38 static_assert(std::numeric_limits<A>::max_digits10 == 0,
39 "std::numeric_limits<A>::max_digits10 == 0");
40 static_assert(std::numeric_limits<A>::is_signed == false,
41 "std::numeric_limits<A>::is_signed == false");
42 static_assert(std::numeric_limits<A>::is_integer == false,
43 "std::numeric_limits<A>::is_integer == false");
44 static_assert(std::numeric_limits<A>::is_exact == false,
45 "std::numeric_limits<A>::is_exact == false");
46 static_assert(std::numeric_limits<A>::radix == 0,
47 "std::numeric_limits<A>::radix == 0");
48 assert(std::numeric_limits<A>::epsilon() == A());
49 assert(std::numeric_limits<A>::round_error() == A());
50 static_assert(std::numeric_limits<A>::min_exponent == 0,
51 "std::numeric_limits<A>::min_exponent == 0");
52 static_assert(std::numeric_limits<A>::min_exponent10 == 0,
53 "std::numeric_limits<A>::min_exponent10 == 0");
54 static_assert(std::numeric_limits<A>::max_exponent == 0,
55 "std::numeric_limits<A>::max_exponent == 0");
56 static_assert(std::numeric_limits<A>::max_exponent10 == 0,
57 "std::numeric_limits<A>::max_exponent10 == 0");
58 static_assert(std::numeric_limits<A>::has_infinity == false,
59 "std::numeric_limits<A>::has_infinity == false");
60 static_assert(std::numeric_limits<A>::has_quiet_NaN == false,
61 "std::numeric_limits<A>::has_quiet_NaN == false");
62 static_assert(std::numeric_limits<A>::has_signaling_NaN == false,
63 "std::numeric_limits<A>::has_signaling_NaN == false");
64 static_assert(std::numeric_limits<A>::has_denorm == std::denorm_absent,
65 "std::numeric_limits<A>::has_denorm == std::denorm_absent");
66 static_assert(std::numeric_limits<A>::has_denorm_loss == false,
67 "std::numeric_limits<A>::has_denorm_loss == false");
68 assert(std::numeric_limits<A>::infinity() == A());
69 assert(std::numeric_limits<A>::quiet_NaN() == A());
70 assert(std::numeric_limits<A>::signaling_NaN() == A());
71 assert(std::numeric_limits<A>::denorm_min() == A());
72 static_assert(std::numeric_limits<A>::is_iec559 == false,
73 "std::numeric_limits<A>::is_iec559 == false");
74 static_assert(std::numeric_limits<A>::is_bounded == false,
75 "std::numeric_limits<A>::is_bounded == false");
76 static_assert(std::numeric_limits<A>::is_modulo == false,
77 "std::numeric_limits<A>::is_modulo == false");
78 static_assert(std::numeric_limits<A>::traps == false,
79 "std::numeric_limits<A>::traps == false");
80 static_assert(std::numeric_limits<A>::tinyness_before == false,
81 "std::numeric_limits<A>::tinyness_before == false");
82 static_assert(std::numeric_limits<A>::round_style == std::round_toward_zero,
83 "std::numeric_limits<A>::round_style == std::round_toward_zero");
84
85 return 0;
86 }
87