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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