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| <h3 class="section">8.6 <code>localtime</code>—convert time to local representation</h3> |
| |
| <p><a name="index-localtime-436"></a><a name="index-localtime_005fr-437"></a><strong>Synopsis</strong> |
| <pre class="example"> #include <time.h> |
| struct tm *localtime(time_t *<var>clock</var>); |
| struct tm *localtime_r(time_t *<var>clock</var>, struct tm *<var>res</var>); |
| |
| </pre> |
| <p><strong>Description</strong><br> |
| <code>localtime</code> converts the time at <var>clock</var> into local time, then |
| converts its representation from the arithmetic representation to the |
| traditional representation defined by <code>struct tm</code>. |
| |
| <p><code>localtime</code> constructs the traditional time representation in static |
| storage; each call to <code>gmtime</code> or <code>localtime</code> will overwrite the |
| information generated by previous calls to either function. |
| |
| <p><code>mktime</code> is the inverse of <code>localtime</code>. |
| |
| <p><br> |
| <strong>Returns</strong><br> |
| A pointer to the traditional time representation (<code>struct tm</code>). |
| |
| <p><br> |
| <strong>Portability</strong><br> |
| ANSI C requires <code>localtime</code>. |
| |
| <p><code>localtime</code> requires no supporting OS subroutines. |
| |
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