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- <h1 id="firstHeading" class="firstHeading">timespec</h1> <table class="t-dcl-begin"> <tr class="t-dsc-header"> <th> Defined in header <code>&lt;time.h&gt;</code> </th> <th> </th> <th> </th> </tr> <tr class="t-dcl t-since-c11"> <td> <pre data-language="c">struct timespec;</pre>
-</td> <td class="t-dcl-nopad"> </td> <td> <span class="t-mark-rev t-since-c11">(since C11)</span> </td> </tr> </table> <p>Structure holding an interval broken down into seconds and nanoseconds.</p>
-<h3 id="Member_objects"> Member objects</h3> <table class="t-dsc-begin"> <tr class="t-dsc"> <td> <code><a href="time_t" title="c/chrono/time t">time_t</a></code> <code>tv_sec</code> </td> <td> whole seconds (valid values are &gt;= 0) </td>
-</tr> <tr class="t-dsc"> <td> <code>/* see below */</code> <code>tv_nsec</code> </td> <td> nanoseconds (valid values are [0, 999999999]) </td>
-</tr> </table> <table class="t-rev-begin"> <tr class="t-rev t-until-c23">
-<td> <p>The type of <code>tv_nsec</code> is <code>long</code>.</p>
-</td> <td><span class="t-mark-rev t-until-c23">(until C23)</span></td>
-</tr> <tr class="t-rev t-since-c23">
-<td> <p>The type of <code>tv_nsec</code> is an implementation-defined signed integer type that can represent integers in [0, 999999999].</p>
-</td> <td><span class="t-mark-rev t-since-c23">(since C23)</span></td>
-</tr> </table> <p>The declaration order of <code>tv_sec</code> and <code>tv_nsec</code> is unspecified. Implementation may add other members to <code>struct timespec</code>.</p>
-<h3 id="Notes"> Notes</h3> <p>The type of <code>tv_nsec</code> is <code>long long</code> on some platforms, which is conforming only since C23.</p>
-<h3 id="Example"> Example</h3> <div class="t-example"> <div class="c source-c"><pre data-language="c">#include &lt;stdio.h&gt;
-#include &lt;time.h&gt;
-#include &lt;stdint.h&gt;
-
-int main(void)
-{
- struct timespec ts;
- timespec_get(&amp;ts, TIME_UTC);
- char buff[100];
- strftime(buff, sizeof buff, "%D %T", gmtime(&amp;ts.tv_sec));
- printf("Current time: %s.%09ld UTC\n", buff, ts.tv_nsec);
- printf("Raw timespec.time_t: %jd\n", (intmax_t)ts.tv_sec);
- printf("Raw timespec.tv_nsec: %09ld\n", ts.tv_nsec);
-}</pre></div> <p>Possible output:</p>
-<div class="text source-text"><pre data-language="c">Current time: 11/24/21 03:10:50.408191283 UTC
-Raw timespec.time_t: 1637723450
-Raw timespec.tv_nsec: 408191283</pre></div> </div> <h3 id="References"> References</h3> <ul>
-<li> C17 standard (ISO/IEC 9899:2018): </li>
-<ul><li> 7.27.1/3 Components of time (p: 284) </li></ul>
-<li> C11 standard (ISO/IEC 9899:2011): </li>
-<ul><li> 7.27.1/3 Components of time (p: 388) </li></ul>
-</ul> <h3 id="See_also"> See also</h3> <table class="t-dsc-begin"> <tr class="t-dsc"> <td> <div><a href="timespec_get" title="c/chrono/timespec get"> <span class="t-lines"><span>timespec_get</span></span></a></div>
-<div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div> </td> <td> returns the calendar time in seconds and nanoseconds based on a given time base <br> <span class="t-mark">(function)</span> </td>
-</tr> <tr class="t-dsc"> <td> <div><a href="tm" title="c/chrono/tm"> <span class="t-lines"><span>tm</span></span></a></div> </td> <td> calendar time type<br><span class="t-mark">(struct)</span> </td>
-</tr> <tr class="t-dsc"> <td colspan="2"> <span><a href="https://en.cppreference.com/w/cpp/chrono/c/timespec" title="cpp/chrono/c/timespec">C++ documentation</a></span> for <code>timespec</code> </td>
-</tr> </table> <div class="_attribution">
- <p class="_attribution-p">
- &copy; cppreference.com<br>Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.<br>
- <a href="https://en.cppreference.com/w/c/chrono/timespec" class="_attribution-link">https://en.cppreference.com/w/c/chrono/timespec</a>
- </p>
-</div>