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41 lines
1.8 KiB
HTML
41 lines
1.8 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
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<title>Example Documentation</title>
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<link href="doxygen.css" rel="stylesheet" type="text/css">
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</head><body bgcolor="#ffffff">
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<!-- Generated by Doxygen 1.2.17 -->
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<hr><h1>time_math.cpp</h1> Various types of calculations with times and time durations.
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<p>
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<div class="fragment"><pre><font class="comment">//Some simple examples of constructing and calculating with times</font>
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<font class="comment">//Output:</font>
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<font class="comment">//2002-Feb-01 00:00:00 - 2002-Feb-01 05:04:02.001000000 = -5:04:02.001000000</font>
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<font class="preprocessor">#include "boost/date_time/posix_time/posix_time.hpp"</font>
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<font class="preprocessor">#include <iostream></font>
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<font class="keywordtype">int</font>
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main()
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{
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<font class="keyword">using</font> <font class="keyword">namespace </font>boost::posix_time;
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using namespace boost::gregorian;
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date d(2002,Feb,1); <font class="comment">//an arbitrary date</font>
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<font class="comment">//construct a time by adding up some durations durations</font>
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ptime t1(d, hours(5)+minutes(4)+seconds(2)+millisec(1));
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<font class="comment">//construct a new time by subtracting some times</font>
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ptime t2 = t1 - hours(5)- minutes(4)- seconds(2)- millisec(1);
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<font class="comment">//construct a duration by taking the difference between times</font>
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time_duration td = t2 - t1;
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std::cout << to_simple_string(t2) << " - "
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<< to_simple_string(t1) << " = "
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<< to_simple_string(td) << std::endl;
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return 0;
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}
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</pre></div><hr><address><small>
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Generated Wed Aug 21 16:54:33 2002 by Doxygen for CrystalClear Software © 2000-2002</small></address>
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</body>
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</html>
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