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<title>PTypes: date/time: time</title>
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<p><a href="../index.html"><img src="title-21.png" width="253" height="39" alt="C++ Portable Types Library (PTypes) Version 2.1" border="0"></a>
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<p class="hpath"><a href="index.html">Top</a>: <a href="basic.html">Basic types</a>:
<a href="time.html">Date/time</a>: Time manipulation</p>
<blockquote>
<pre class="lang">#include <ptime.h>
typedef large datetime;
bool istimevalid(int hour, int min, int sec, int msec = 0);
datetime encodetime(int hour, int min, int sec, int msec = 0);
bool decodetime(datetime d, int& hour, int& min, int& sec [, int& msec] );
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<p><span class="def">bool istimevalid(int hour, int min, int sec, int msec =
0)</span> checks whether <span class="lang">hour</span>, <span class="lang">min</span>,
<span class="lang">sec</span> and <span class="lang">msec</span> (millisecond)
contain correct values in their respective ranges. The last parameter is optional.</p>
<p><span class="def">datetime encodetime(int hour, int min, int sec, int msec
= 0)</span> returns a <span class="lang">datetime</span> value, i.e. the number
of milliseconds since midnight. This function does NOT check the input parameters
for validity. The value returned by this function can be added to the return value
of <span class="lang">encodedate()</span> to form the exact time stamp for the
given year, month, day, hour, minute, second and (optionally) millisecond.</p>
<p><span class="def">bool decodetime(datetime d, int& hour, int& min, int& sec
[, int& msec] )</span> splits the value of <span class="lang">d</span> into <span class="lang">hour</span>,
<span class="lang">minute</span>, <span class="lang">sec</span> and <span class="lang">msec</span>
(millisecond) passed since midnight. The last parameter is optional.</p>
<p class="seealso">See also: <a href="time.datetime.html">Datetime type</a>, <a href="time.calendar.html">Date/calendar
manipulation</a></p>
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