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-.\" Copyright (C) 2014 Michael Kerrisk <mtk.manpages@gmail.com>
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.TH uselocale 3 (date) "Linux man-pages (unreleased)"
-.SH NAME
-uselocale \- set/get the locale for the calling thread
-.SH LIBRARY
-Standard C library
-.RI ( libc ", " \-lc )
-.SH SYNOPSIS
-.nf
-.B #include <locale.h>
-.P
-.BI "locale_t uselocale(locale_t " newloc );
-.fi
-.P
-.RS -4
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.RE
-.P
-.BR uselocale ():
-.nf
- Since glibc 2.10:
- _XOPEN_SOURCE >= 700
- Before glibc 2.10:
- _GNU_SOURCE
-.fi
-.SH DESCRIPTION
-The
-.BR uselocale ()
-function sets the current locale for the calling thread,
-and returns the thread's previously current locale.
-After a successful call to
-.BR uselocale (),
-any calls by this thread to functions that depend on the locale
-will operate as though the locale has been set to
-.IR newloc .
-.P
-The
-.I newloc
-argument can have one of the following values:
-.TP
-A handle returned by a call to \fBnewlocale\fP(3) or \fBduplocale\fP(3)
-The calling thread's current locale is set to the specified locale.
-.TP
-The special locale object handle \fBLC_GLOBAL_LOCALE\fP
-The calling thread's current locale is set to the global locale determined by
-.BR setlocale (3).
-.TP
-.I "(locale_t) 0"
-The calling thread's current locale is left unchanged
-(and the current locale is returned as the function result).
-.SH RETURN VALUE
-On success,
-.BR uselocale ()
-returns the locale handle that was set by the previous call to
-.BR uselocale ()
-in this thread, or
-.B LC_GLOBAL_LOCALE
-if there was no such previous call.
-On error, it returns
-.IR "(locale_t)\ 0" ,
-and sets
-.I errno
-to indicate the error.
-.SH ERRORS
-.TP
-.B EINVAL
-.I newloc
-does not refer to a valid locale object.
-.SH STANDARDS
-POSIX.1-2008.
-.SH HISTORY
-glibc 2.3.
-POSIX.1-2008.
-.SH NOTES
-Unlike
-.BR setlocale (3),
-.BR uselocale ()
-does not allow selective replacement of individual locale categories.
-To employ a locale that differs in only a few categories from the current
-locale, use calls to
-.BR duplocale (3)
-and
-.BR newlocale (3)
-to obtain a locale object equivalent to the current locale and
-modify the desired categories in that object.
-.SH EXAMPLES
-See
-.BR newlocale (3)
-and
-.BR duplocale (3).
-.SH SEE ALSO
-.BR locale (1),
-.BR duplocale (3),
-.BR freelocale (3),
-.BR newlocale (3),
-.BR setlocale (3),
-.BR locale (5),
-.BR locale (7)