1 // { dg-do run { target c++11 } }
2 // { dg-require-cstdint "" }
3
4 // Copyright (C) 2008-2018 Free Software Foundation, Inc.
5 //
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 3, or (at your option)
10 // any later version.
11
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
16
17 // You should have received a copy of the GNU General Public License
18 // along with this library; see the file COPYING3. If not see
19 // <http://www.gnu.org/licenses/>.
20
21 #include <ratio>
22 #include <testsuite_hooks.h>
23
24 static const std::intmax_t M = INTMAX_MAX;
25
26 void
test01()27 test01()
28 {
29 // No overflow with same denominator
30 VERIFY( (std::ratio_less<std::ratio<M - 2, M>,
31 std::ratio<M - 1, M>>::value == 1) );
32
33 VERIFY( (std::ratio_less<std::ratio<M - 1, M>,
34 std::ratio<M - 2, M>>::value == 0) );
35
36 // No overflow if signs differ
37 VERIFY( (std::ratio_less<std::ratio<-M, M - 1>,
38 std::ratio<M - 1, M - 2>>::value == 1) );
39
40 VERIFY( (std::ratio_less<std::ratio<M - 1, M - 2>,
41 std::ratio<-M, M - 1>>::value == 0) );
42
43 // No overflow
44 VERIFY( (std::ratio_less<std::ratio<M, M - 1>,
45 std::ratio<M, M - 2>>::value == 1) );
46
47 VERIFY( (std::ratio_less<std::ratio<-M, M - 1>,
48 std::ratio<-M, M - 2>>::value == 0) );
49
50 VERIFY( (std::ratio_less<std::ratio<M - 2, M - 1>,
51 std::ratio<M - 1, M>>::value == 1) );
52 }
53
main()54 int main()
55 {
56 test01();
57 return 0;
58 }
59