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// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
10
11// test numeric_limits
12
13// The default numeric_limits<T> template shall have all members, but with
14// 0 or false values.
15
16#include <limits>
17#include <cassert>
18
19#include "test_macros.h"
20
21struct A
22{
23 A(int i = 0) : data_(i) {}
24 int data_;
25};
26
27bool operator == (const A& x, const A& y) {return x.data_ == y.data_;}
28
29int main(int, char**)
30{
31 static_assert(std::numeric_limits<A>::is_specialized == false,
32 "std::numeric_limits<A>::is_specialized == false");
33 assert(std::numeric_limits<A>::min() == A());
34 assert(std::numeric_limits<A>::max() == A());
35 assert(std::numeric_limits<A>::lowest() == A());
36 static_assert(std::numeric_limits<A>::digits == 0,
37 "std::numeric_limits<A>::digits == 0");
38 static_assert(std::numeric_limits<A>::digits10 == 0,
39 "std::numeric_limits<A>::digits10 == 0");
40 static_assert(std::numeric_limits<A>::max_digits10 == 0,
41 "std::numeric_limits<A>::max_digits10 == 0");
42 static_assert(std::numeric_limits<A>::is_signed == false,
43 "std::numeric_limits<A>::is_signed == false");
44 static_assert(std::numeric_limits<A>::is_integer == false,
45 "std::numeric_limits<A>::is_integer == false");
46 static_assert(std::numeric_limits<A>::is_exact == false,
47 "std::numeric_limits<A>::is_exact == false");
48 static_assert(std::numeric_limits<A>::radix == 0,
49 "std::numeric_limits<A>::radix == 0");
50 assert(std::numeric_limits<A>::epsilon() == A());
51 assert(std::numeric_limits<A>::round_error() == A());
52 static_assert(std::numeric_limits<A>::min_exponent == 0,
53 "std::numeric_limits<A>::min_exponent == 0");
54 static_assert(std::numeric_limits<A>::min_exponent10 == 0,
55 "std::numeric_limits<A>::min_exponent10 == 0");
56 static_assert(std::numeric_limits<A>::max_exponent == 0,
57 "std::numeric_limits<A>::max_exponent == 0");
58 static_assert(std::numeric_limits<A>::max_exponent10 == 0,
59 "std::numeric_limits<A>::max_exponent10 == 0");
60 static_assert(std::numeric_limits<A>::has_infinity == false,
61 "std::numeric_limits<A>::has_infinity == false");
62 static_assert(std::numeric_limits<A>::has_quiet_NaN == false,
63 "std::numeric_limits<A>::has_quiet_NaN == false");
64 static_assert(std::numeric_limits<A>::has_signaling_NaN == false,
65 "std::numeric_limits<A>::has_signaling_NaN == false");
66 static_assert(std::numeric_limits<A>::has_denorm == std::denorm_absent,
67 "std::numeric_limits<A>::has_denorm == std::denorm_absent");
68 static_assert(std::numeric_limits<A>::has_denorm_loss == false,
69 "std::numeric_limits<A>::has_denorm_loss == false");
70 assert(std::numeric_limits<A>::infinity() == A());
71 assert(std::numeric_limits<A>::quiet_NaN() == A());
72 assert(std::numeric_limits<A>::signaling_NaN() == A());
73 assert(std::numeric_limits<A>::denorm_min() == A());
74 static_assert(std::numeric_limits<A>::is_iec559 == false,
75 "std::numeric_limits<A>::is_iec559 == false");
76 static_assert(std::numeric_limits<A>::is_bounded == false,
77 "std::numeric_limits<A>::is_bounded == false");
78 static_assert(std::numeric_limits<A>::is_modulo == false,
79 "std::numeric_limits<A>::is_modulo == false");
80 static_assert(std::numeric_limits<A>::traps == false,
81 "std::numeric_limits<A>::traps == false");
82 static_assert(std::numeric_limits<A>::tinyness_before == false,
83 "std::numeric_limits<A>::tinyness_before == false");
84 static_assert(std::numeric_limits<A>::round_style == std::round_toward_zero,
85 "std::numeric_limits<A>::round_style == std::round_toward_zero");
86
87 return 0;
88}
89

source code of libcxx/test/std/language.support/support.limits/limits/numeric.limits/default.pass.cpp