200 lines
4.9 KiB
HTML
200 lines
4.9 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of USELOCALE</TITLE>
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</HEAD><BODY>
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<H1>USELOCALE</H1>
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Section: Linux Programmer's Manual (3)<BR>Updated: 2017-09-15<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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uselocale - set/get the locale for the calling thread
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<PRE>
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<B>#include <<A HREF="file:///usr/include/locale.h">locale.h</A>></B>
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<B>locale_t uselocale(locale_t </B><I>newloc</I><B>);</B>
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</PRE>
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<P>
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Feature Test Macro Requirements for glibc (see
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<B><A HREF="/cgi-bin/man/man2html?7+feature_test_macros">feature_test_macros</A></B>(7)):
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<P>
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<B>uselocale</B>():
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<DL COMPACT><DT id="1"><DD>
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<DL COMPACT>
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<DT id="2">Since glibc 2.10:<DD>
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_XOPEN_SOURCE >= 700
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<DT id="3">Before glibc 2.10:<DD>
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_GNU_SOURCE
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</DL>
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</DL>
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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The
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<B>uselocale</B>()
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function sets the current locale for the calling thread,
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and returns the thread's previously current locale.
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After a successful call to
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<B>uselocale</B>(),
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any calls by this thread to functions that depend on the locale
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will operate as though the locale has been set to
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<I>newloc</I>.
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<P>
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The
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<I>newloc</I>
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argument can have one of the following values:
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<DL COMPACT>
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<DT id="4">A handle returned by a call to <B><A HREF="/cgi-bin/man/man2html?3+newlocale">newlocale</A></B>(3) or <B><A HREF="/cgi-bin/man/man2html?3+duplocale">duplocale</A></B>(3)<DD>
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The calling thread's current locale is set to the specified locale.
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<DT id="5">The special locale object handle <B>LC_GLOBAL_LOCALE</B><DD>
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The calling thread's current locale is set to the global locale determined by
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<B><A HREF="/cgi-bin/man/man2html?3+setlocale">setlocale</A></B>(3).
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<DT id="6"><I>(locale_t) 0</I>
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<DD>
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The calling thread's current locale is left unchanged
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(and the current locale is returned as the function result).
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</DL>
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<A NAME="lbAE"> </A>
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<H2>RETURN VALUE</H2>
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On success,
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<B>uselocale</B>()
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returns the locale handle that was set by the previous call to
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<B>uselocale</B>()
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in this thread, or
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<B>LC_GLOBAL_LOCALE</B>
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if there was no such previous call.
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On error, it returns
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<I>(locale_t) 0</I>,
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and sets
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<I>errno</I>
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to indicate the cause of the error.
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<A NAME="lbAF"> </A>
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<H2>ERRORS</H2>
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<DL COMPACT>
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<DT id="7"><B>EINVAL</B>
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<DD>
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<I>newloc</I>
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does not refer to a valid locale object.
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</DL>
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<A NAME="lbAG"> </A>
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<H2>VERSIONS</H2>
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The
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<B>uselocale</B>()
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function first appeared in version 2.3 of the GNU C library.
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<A NAME="lbAH"> </A>
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<H2>CONFORMING TO</H2>
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POSIX.1-2008.
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<A NAME="lbAI"> </A>
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<H2>NOTES</H2>
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Unlike
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<B><A HREF="/cgi-bin/man/man2html?3+setlocale">setlocale</A></B>(3),
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<B>uselocale</B>()
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does not allow selective replacement of individual locale categories.
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To employ a locale that differs in only a few categories from the current
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locale, use calls to
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<B><A HREF="/cgi-bin/man/man2html?3+duplocale">duplocale</A></B>(3)
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and
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<B><A HREF="/cgi-bin/man/man2html?3+newlocale">newlocale</A></B>(3)
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to obtain a locale object equivalent to the current locale and
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modify the desired categories in that object.
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<A NAME="lbAJ"> </A>
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<H2>EXAMPLE</H2>
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See
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<B><A HREF="/cgi-bin/man/man2html?3+newlocale">newlocale</A></B>(3)
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and
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<B><A HREF="/cgi-bin/man/man2html?3+duplocale">duplocale</A></B>(3).
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<A NAME="lbAK"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?1+locale">locale</A></B>(1),
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<B><A HREF="/cgi-bin/man/man2html?3+duplocale">duplocale</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+freelocale">freelocale</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+newlocale">newlocale</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+setlocale">setlocale</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?5+locale">locale</A></B>(5),
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<B><A HREF="/cgi-bin/man/man2html?7+locale">locale</A></B>(7)
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<A NAME="lbAL"> </A>
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<H2>COLOPHON</H2>
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This page is part of release 5.05 of the Linux
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<I>man-pages</I>
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project.
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A description of the project,
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information about reporting bugs,
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and the latest version of this page,
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can be found at
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<A HREF="https://www.kernel.org/doc/man-pages/.">https://www.kernel.org/doc/man-pages/.</A>
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="8"><A HREF="#lbAB">NAME</A><DD>
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<DT id="9"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="10"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="11"><A HREF="#lbAE">RETURN VALUE</A><DD>
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<DT id="12"><A HREF="#lbAF">ERRORS</A><DD>
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<DT id="13"><A HREF="#lbAG">VERSIONS</A><DD>
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<DT id="14"><A HREF="#lbAH">CONFORMING TO</A><DD>
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<DT id="15"><A HREF="#lbAI">NOTES</A><DD>
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<DT id="16"><A HREF="#lbAJ">EXAMPLE</A><DD>
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<DT id="17"><A HREF="#lbAK">SEE ALSO</A><DD>
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<DT id="18"><A HREF="#lbAL">COLOPHON</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:59 GMT, March 31, 2021
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