1 // { dg-options "-std=gnu++0x" }
2 // { dg-require-cstdint "" }
3
4 // Copyright (C) 2008-2013 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 bool test __attribute__((unused)) = true;
30
31 // No overflow with same denominator
32 VERIFY( (std::ratio_less<std::ratio<M - 2, M>,
33 std::ratio<M - 1, M>>::value == 1) );
34
35 VERIFY( (std::ratio_less<std::ratio<M - 1, M>,
36 std::ratio<M - 2, M>>::value == 0) );
37
38 // No overflow if signs differ
39 VERIFY( (std::ratio_less<std::ratio<-M, M - 1>,
40 std::ratio<M - 1, M - 2>>::value == 1) );
41
42 VERIFY( (std::ratio_less<std::ratio<M - 1, M - 2>,
43 std::ratio<-M, M - 1>>::value == 0) );
44
45 // No overflow
46 VERIFY( (std::ratio_less<std::ratio<M, M - 1>,
47 std::ratio<M, M - 2>>::value == 1) );
48
49 VERIFY( (std::ratio_less<std::ratio<-M, M - 1>,
50 std::ratio<-M, M - 2>>::value == 0) );
51
52 VERIFY( (std::ratio_less<std::ratio<M - 2, M - 1>,
53 std::ratio<M - 1, M>>::value == 1) );
54 }
55
main()56 int main()
57 {
58 test01();
59 return 0;
60 }
61