You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
92 lines
3.6 KiB
HTML
92 lines
3.6 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
|
|
<head>
|
|
<title>mktime (The Red Hat newlib C Library)</title>
|
|
|
|
<meta name="description" content="mktime (The Red Hat newlib C Library)">
|
|
<meta name="keywords" content="mktime (The Red Hat newlib C Library)">
|
|
<meta name="resource-type" content="document">
|
|
<meta name="distribution" content="global">
|
|
<meta name="Generator" content="makeinfo">
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
|
<link href="index.html#Top" rel="start" title="Top">
|
|
<link href="Document-Index.html#Document-Index" rel="index" title="Document Index">
|
|
<link href="Document-Index.html#SEC_Contents" rel="contents" title="Table of Contents">
|
|
<link href="Timefns.html#Timefns" rel="up" title="Timefns">
|
|
<link href="strftime.html#strftime" rel="next" title="strftime">
|
|
<link href="localtime.html#localtime" rel="prev" title="localtime">
|
|
<style type="text/css">
|
|
<!--
|
|
a.summary-letter {text-decoration: none}
|
|
blockquote.indentedblock {margin-right: 0em}
|
|
blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
|
|
blockquote.smallquotation {font-size: smaller}
|
|
div.display {margin-left: 3.2em}
|
|
div.example {margin-left: 3.2em}
|
|
div.lisp {margin-left: 3.2em}
|
|
div.smalldisplay {margin-left: 3.2em}
|
|
div.smallexample {margin-left: 3.2em}
|
|
div.smalllisp {margin-left: 3.2em}
|
|
kbd {font-style: oblique}
|
|
pre.display {font-family: inherit}
|
|
pre.format {font-family: inherit}
|
|
pre.menu-comment {font-family: serif}
|
|
pre.menu-preformatted {font-family: serif}
|
|
pre.smalldisplay {font-family: inherit; font-size: smaller}
|
|
pre.smallexample {font-size: smaller}
|
|
pre.smallformat {font-family: inherit; font-size: smaller}
|
|
pre.smalllisp {font-size: smaller}
|
|
span.nolinebreak {white-space: nowrap}
|
|
span.roman {font-family: initial; font-weight: normal}
|
|
span.sansserif {font-family: sans-serif; font-weight: normal}
|
|
ul.no-bullet {list-style: none}
|
|
-->
|
|
</style>
|
|
|
|
|
|
</head>
|
|
|
|
<body lang="en">
|
|
<a name="mktime"></a>
|
|
<div class="header">
|
|
<p>
|
|
Next: <a href="strftime.html#strftime" accesskey="n" rel="next">strftime</a>, Previous: <a href="localtime.html#localtime" accesskey="p" rel="prev">localtime</a>, Up: <a href="Timefns.html#Timefns" accesskey="u" rel="up">Timefns</a> [<a href="Document-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Document-Index.html#Document-Index" title="Index" rel="index">Index</a>]</p>
|
|
</div>
|
|
<hr>
|
|
<a name="mktime_002d_002d_002dconvert-time-to-arithmetic-representation"></a>
|
|
<h3 class="section">8.7 <code>mktime</code>—convert time to arithmetic representation</h3>
|
|
<a name="index-mktime"></a>
|
|
<p><strong>Synopsis</strong>
|
|
</p><div class="example">
|
|
<pre class="example">#include <time.h>
|
|
time_t mktime(struct tm *<var>timp</var>);
|
|
|
|
</pre></div>
|
|
<p><strong>Description</strong><br>
|
|
<code>mktime</code> assumes the time at <var>timp</var> is a local time, and converts
|
|
its representation from the traditional representation defined by
|
|
<code>struct tm</code> into a representation suitable for arithmetic.
|
|
</p>
|
|
<p><code>localtime</code> is the inverse of <code>mktime</code>.
|
|
</p>
|
|
<br>
|
|
<p><strong>Returns</strong><br>
|
|
If the contents of the structure at <var>timp</var> do not form a valid
|
|
calendar time representation, the result is <code>-1</code>. Otherwise, the
|
|
result is the time, converted to a <code>time_t</code> value.
|
|
</p>
|
|
<br>
|
|
<p><strong>Portability</strong><br>
|
|
ANSI C requires <code>mktime</code>.
|
|
</p>
|
|
<p><code>mktime</code> requires no supporting OS subroutines.
|
|
</p>
|
|
<br>
|
|
|
|
|
|
|
|
|
|
</body>
|
|
</html>
|