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timestamp.html
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<html>
<head>
<title>
TIMESTAMP - Print a Timestamp
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
TIMESTAMP <br> Print a Timestamp
</h1>
<hr>
<p>
<b>TIMESTAMP</b>
is a C++ library which
can print or return the current YMDHMS date as a timestamp.
</p>
<p>
This is useful when documenting the run of a program. By
including a timestamp, the output of the program will always
contain a clear indication of when it was created. Other
indicators, such as the file timestamp, may be misleading
or subject to unintentional modification.
</p>
<p>
<b>TIMESTAMP</b> simply gives the current time. If you are
trying to do careful timings of the speed of execution of
a computer code, this may not be very accurate, especially
on a computer that uses timesharing. In that case, there
are better solutions that measure just the CPU time
associated with your process.
</p>
<h3 align = "center">
Licensing:
</h3>
<p>
The computer code and data files described and made available on this web page
are distributed under
<a href = "../../txt/gnu_lgpl.txt">the GNU LGPL license.</a>
</p>
<h3 align = "center">
Languages:
</h3>
<p>
<b>TIMESTAMP</b> is available in
<a href = "../../c_src/timestamp/timestamp.html">a C version</a> and
<a href = "../../cpp_src/timestamp/timestamp.html">a C++ version</a> and
<a href = "../../f77_src/timestamp/timestamp.html">a FORTRAN77 version</a> and
<a href = "../../f_src/timestamp/timestamp.html">a FORTRAN90 version</a> and
<a href = "../../java_src/timestamp/timestamp.html">a JAVA version</a> and
<a href = "../../math_src/timestamp/timestamp.html">a Mathematica version</a> and
<a href = "../../m_src/timestamp/timestamp.html">a MATLAB version</a> and
<a href = "../../py_src/timestamp/timestamp.html">a PYTHON version.</a>
</p>
<h3 align = "center">
Related Data and Programs:
</h3>
<p>
<a href = "../../cpp_src/timer/timer.html">
TIMER</a>,
a C++ library which
can be used to measure elapsed CPU time, rather than elapsed real time.
</p>
<p>
<a href = "../../cpp_src/wtime/wtime.html">
WTIME</a>,
a C++ library which
returns a reading of the wall clock time in seconds.
</p>
<h3 align = "center">
Source Code:
</h3>
<p>
<ul>
<li>
<a href = "timestamp.cpp">timestamp.cpp</a>,
the source code.
</li>
<li>
<a href = "timestamp.hpp">timestamp.hpp</a>,
the include file.
</li>
<li>
<a href = "timestamp.sh">timestamp.sh</a>,
commands to compile the source code.
</li>
</ul>
</p>
<h3 align = "center">
Examples and Tests:
</h3>
<p>
<ul>
<li>
<a href = "timestamp_prb.cpp">timestamp_prb.cpp</a>,
a sample calling program.
</li>
<li>
<a href = "timestamp_prb.sh">timestamp_prb.sh</a>,
commands to compile, link and run the sample calling program.
</li>
<li>
<a href = "timestamp_prb_output.txt">timestamp_prb_output.txt</a>,
the output file.
</li>
</ul>
</p>
<h3 align = "center">
List of Routines:
</h3>
<p>
<ul>
<li>
<b>CPU_TIME</b> reports the elapsed CPU time.
</li>
<li>
<b>TIME_NUMBERS</b> returns the data as a string of integers.
</li>
<li>
<b>TIMESTAMP</b> prints the current YMDHMS date as a time stamp.
</li>
<li>
<b>TIMESTRING</b> returns the current YMDHMS date as a string.
</li>
</ul>
</p>
<p>
You can go up one level to <a href = "../cpp_src.html">
the C++ source codes</a>.
</p>
<hr>
<i>
Last revised on 05 June 2011.
</i>
<!-- John Burkardt -->
</body>
</html>