| 1 | //
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| 2 | // main.cpp
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| 3 | // Boost_Test_1
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| 4 | //
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| 5 | // Created by Arthur B Coleman on 12/7/15.
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| 6 | // Copyright © 2015 Arthur Coleman. All rights reserved.
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| 7 | //
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| 8 |
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| 9 | #include <boost/chrono/chrono.hpp>
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| 10 | #include <boost/type_traits.hpp>
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| 11 |
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| 12 | #include <iostream>
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| 13 |
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| 14 | using namespace boost::chrono;
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| 15 |
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| 16 |
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| 17 | void explore_limits()
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| 18 | {
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| 19 | typedef duration<long long, boost::ratio_multiply<boost::ratio<24*3652425,10000>,
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| 20 | hours::period>::type> Years;
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| 21 | #ifdef BOOST_CHRONO_HAS_CLOCK_STEADY
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| 22 | steady_clock::time_point t1( Years(250));
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| 23 | steady_clock::time_point t2(-Years(250));
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| 24 | #else
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| 25 | system_clock::time_point t1( Years(250));
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| 26 | system_clock::time_point t2(-Years(250));
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| 27 | #endif
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| 28 | // nanosecond resolution is likely to overflow. "up cast" to microseconds.
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| 29 | // The "up cast" trades precision for range.
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| 30 | microseconds d = time_point_cast<microseconds>(t1) - time_point_cast<microseconds>(t2);
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| 31 | std::cout << d.count() << " microseconds\n";
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| 32 | }
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| 33 |
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| 34 |
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| 35 | int main()
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| 36 | {
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| 37 | explore_limits();
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| 38 | return 0;
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| 39 | }
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