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<h1>datetime.h File Reference</h1><code>#include <<a class="el" href="utils__defs_8h_source.html">mrpt/utils/utils_defs.h</a>></code><br/>
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Include dependency graph for datetime.h:</div>
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<p><a href="datetime_8h_source.html">Go to the source code of this file.</a></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Classes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="structmrpt_1_1system_1_1_t_time_parts.html">mrpt::system::TTimeParts</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The parts of a date/time (it's like the standard 'tm' but with fractions of seconds). <a href="structmrpt_1_1system_1_1_t_time_parts.html#_details">More...</a><br/></td></tr>
<tr><td colspan="2"><h2>Namespaces</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">namespace </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt.html">mrpt</a></td></tr>
<p><tr><td class="mdescLeft"> </td><td class="mdescRight"><p>This is the global namespace for all Mobile Robot Programming Toolkit (MRPT) libraries. </p>
<br/></td></tr>
</p>
<tr><td class="memItemLeft" align="right" valign="top">namespace </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html">mrpt::system</a></td></tr>
<p><tr><td class="mdescLeft"> </td><td class="mdescRight"><p>This namespace provides a OS-independent interface to many useful functions: filenames manipulation, time and date, string parsing, file I/O, threading, memory allocation, etc. </p>
<br/></td></tr>
</p>
<tr><td colspan="2"><h2>Defines</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="datetime_8h.html#a2a0a650d16403da1f447b7543ce68e2b">INVALID_TIMESTAMP</a> (0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Represents an invalid timestamp, where applicable. <a href="#a2a0a650d16403da1f447b7543ce68e2b"></a><br/></td></tr>
<tr><td colspan="2"><h2>Time and date functions</h2></td></tr>
<tr><td colspan="2"><p><a class="anchor" id="amgrp6b701dbdcb62fd35567a8c7ab3596ad7"></a> </p>
<br/><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">typedef uint64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A system independent time type, it holds the the number of 100-nanosecond intervals since January 1, 1601 (UTC). <a href="#a42674286d8d56afea013b6329bb7327a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a> <br class="typebreak"/>
BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#ae5c2069a367dd2255a98a57997ecd6dd">mrpt::system::buildTimestampFromParts</a> (const <a class="el" href="structmrpt_1_1system_1_1_t_time_parts.html">mrpt::system::TTimeParts</a> &p)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Builds a timestamp from the parts (Parts are in UTC). <a href="#ae5c2069a367dd2255a98a57997ecd6dd"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a> <br class="typebreak"/>
BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#ac47630067af4e9d3a10bdec99dc2c89f">mrpt::system::buildTimestampFromPartsLocalTime</a> (const <a class="el" href="structmrpt_1_1system_1_1_t_time_parts.html">mrpt::system::TTimeParts</a> &p)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Builds a timestamp from the parts (Parts are in local time). <a href="#ac47630067af4e9d3a10bdec99dc2c89f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#aea0cf13ef6fcea522d61f857784492b0">mrpt::system::timestampToParts</a> (TTimeStamp t, TTimeParts &p, bool localTime=false)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Gets the individual parts of a date/time (days, hours, minutes, seconds) - UTC time or local time. <a href="#aea0cf13ef6fcea522d61f857784492b0"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a> <br class="typebreak"/>
BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#a8ffef5e63c4e445f2134f4e237a8547a">mrpt::system::getCurrentTime</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the current (UTC) system time. <a href="#a8ffef5e63c4e445f2134f4e237a8547a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#a8cfac7450724f121d3a6a40a4b9ce205">mrpt::system::now</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A shortcut for <a class="el" href="namespacemrpt_1_1system.html#a8ffef5e63c4e445f2134f4e237a8547a" title="Returns the current (UTC) system time.">system::getCurrentTime</a>. <a href="#a8cfac7450724f121d3a6a40a4b9ce205"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a> <br class="typebreak"/>
BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#a2ef2346fc2d6bc3fd59067cfb63664e9">mrpt::system::getCurrentLocalTime</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the current (local) time. <a href="#a2ef2346fc2d6bc3fd59067cfb63664e9"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a> <br class="typebreak"/>
BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#a6a61ebdcaac6a46c162da8c5c1d94c18">mrpt::system::time_tToTimestamp</a> (const double &t)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Transform from standard "time_t" (actually a double number, it can contain fractions of seconds) to TTimeStamp. <a href="#a6a61ebdcaac6a46c162da8c5c1d94c18"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a> <br class="typebreak"/>
BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#ae48e0b5adc75674689b40655c20adce3">mrpt::system::time_tToTimestamp</a> (const time_t &t)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Transform from standard "time_t" to TTimeStamp. <a href="#ae48e0b5adc75674689b40655c20adce3"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#a174de88e05dcdb49a3ddd7bde16bdc20">mrpt::system::timestampTotime_t</a> (const <a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a> &t)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Transform from TTimeStamp to standard "time_t" (actually a double number, it can contain fractions of seconds). <a href="#a174de88e05dcdb49a3ddd7bde16bdc20"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#a0f49560ffd1a24aa1a768344d8c7dd27">mrpt::system::timeDifference</a> (const <a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a> &t_first, const <a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a> &t_later)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Retuns the time difference from t1 to t2 (positive if t2 is posterior to t1), in seconds. <a href="#a0f49560ffd1a24aa1a768344d8c7dd27"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a> <br class="typebreak"/>
BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#a70c53ac763448013b013164c1960255b">mrpt::system::secondsToTimestamp</a> (const double &nSeconds)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Transform a time interval (in seconds) into TTimeStamp (e.g. <a href="#a70c53ac763448013b013164c1960255b"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">std::string BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#a19c9ba03de2d9944dc7075ebce87abf6">mrpt::system::formatTimeInterval</a> (const double &timeSeconds)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns a formated string with the given time difference (passed as the number of seconds), as a string [H]H:MM:SS.MILISECS. <a href="#a19c9ba03de2d9944dc7075ebce87abf6"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">std::string BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#a61d5954c4e4e53398ca964634e498b83">mrpt::system::dateTimeToString</a> (const <a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a> &t)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Convert a timestamp into this textual form (UTC time): YEAR/MONTH/DAY,HH:MM:SS.MMM. <a href="#a61d5954c4e4e53398ca964634e498b83"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">std::string BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#a3c75acbd894c8a3ff621641a47aa8c28">mrpt::system::dateTimeLocalToString</a> (const <a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a> &t)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Convert a timestamp into this textual form (in local time): YEAR/MONTH/DAY,HH:MM:SS.MMM. <a href="#a3c75acbd894c8a3ff621641a47aa8c28"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">std::string BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#a570d214be797dec1d694c04cae62b968">mrpt::system::dateToString</a> (const <a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a> &t)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Convert a timestamp into this textual form: YEAR/MONTH/DAY. <a href="#a570d214be797dec1d694c04cae62b968"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">double BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#a7599b1b1aab840b775479f54b8d3d1e7">mrpt::system::extractDayTimeFromTimestamp</a> (const <a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a> &t)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the number of seconds ellapsed from midnight in the given timestamp. <a href="#a7599b1b1aab840b775479f54b8d3d1e7"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">std::string BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#ac16a09c8efe474c49980837fabdc3df1">mrpt::system::timeToString</a> (const <a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a> &t)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Convert a timestamp into this textual form (UTC): HH:MM:SS.MMMMMM. <a href="#ac16a09c8efe474c49980837fabdc3df1"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">std::string BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#a38a53d6f98af05d1ac427dbb26b38ea5">mrpt::system::timeLocalToString</a> (const <a class="el" href="namespacemrpt_1_1system.html#a42674286d8d56afea013b6329bb7327a">mrpt::system::TTimeStamp</a> &t, unsigned int secondFractionDigits=6)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Convert a timestamp into this textual form (in local time): HH:MM:SS.MMMMMM. <a href="#a38a53d6f98af05d1ac427dbb26b38ea5"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">std::string BASE_IMPEXP </td><td class="memItemRight" valign="bottom"><a class="el" href="namespacemrpt_1_1system.html#a2585751c6ca99999a85d4819854dbb83">mrpt::system::intervalFormat</a> (const double seconds)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">This function implements time interval formatting: Given a time in seconds, it will return a string describing the interval with the most appropriate unit. <a href="#a2585751c6ca99999a85d4819854dbb83"></a><br/></td></tr>
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<hr/><h2>Define Documentation</h2>
<a class="anchor" id="a2a0a650d16403da1f447b7543ce68e2b"></a><!-- doxytag: member="datetime.h::INVALID_TIMESTAMP" ref="a2a0a650d16403da1f447b7543ce68e2b" args="" -->
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<td class="memname">#define INVALID_TIMESTAMP (0)</td>
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<p>Represents an invalid timestamp, where applicable. </p>
<p>Definition at line <a class="el" href="datetime_8h_source.html#l00034">34</a> of file <a class="el" href="datetime_8h_source.html">datetime.h</a>.</p>
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<br><hr><br> <table border="0" width="100%"> <tr> <td> Page generated by <a href="http://www.doxygen.org" target="_blank">Doxygen 1.6.2-20100208</a> for MRPT 0.9.0 SVN: at Wed Jul 14 12:48:09 UTC 2010</td><td></td> <td width="100"> </td> <td width="150"> </td></tr> </table> </body></html>
