1 // ratio_test.cpp ----------------------------------------------------------//
2
3 // Copyright 2008 Howard Hinnant
4 // Copyright 2008 Beman Dawes
5
6 // Distributed under the Boost Software License, Version 1.0.
7 // See http://www.boost.org/LICENSE_1_0.txt
8
9 #include <boost/ratio/ratio.hpp>
10 #include <iostream>
11
12 typedef boost::ratio<5, 3> five_thirds; // five_thirds::num == 5, five_thirds::den == 3
13 typedef boost::ratio<25, 15> also_five_thirds; // also_five_thirds::num == 5, also_five_thirds::den == 3
14 typedef boost::ratio_divide<five_thirds, also_five_thirds>::type one; // one::num == 1, one::den == 1
15
16
17 typedef boost::ratio_multiply<boost::ratio<5>, boost::giga>::type _5giga; // _5giga::num == 5000000000, _5giga::den == 1
18 typedef boost::ratio_multiply<boost::ratio<5>, boost::nano>::type _5nano; // _5nano::num == 1, _5nano::den == 200000000
19
20 // Test the case described in library working group issue 948.
21
22 typedef boost::ratio<BOOST_RATIO_INTMAX_T_MAX, BOOST_RATIO_INTMAX_T_MAX-16> R1;
23 typedef boost::ratio<8, 7> R2;
24 typedef boost::ratio_multiply<R1, R2>::type RT;
25
26
27
main()28 int main()
29 {
30 typedef boost::ratio<8, BOOST_RATIO_INTMAX_C(0x7FFFFFFFD)> R1;
31 typedef boost::ratio<3, BOOST_RATIO_INTMAX_C(0x7FFFFFFFD)> R2;
32 typedef boost::ratio_subtract<R1, R2>::type RS;
33 std::cout << RS::num << '/' << RS::den << '\n';
34
35 return 0;
36 }
37