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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | VERSIONS | CONFORMING TO | NOTES | EXAMPLES | SEE ALSO | COLOPHON |
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USELOCALE(3) Linux Programmer's Manual USELOCALE(3)
uselocale - set/get the locale for the calling thread
#include <locale.h>
locale_t uselocale(locale_t newloc);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
uselocale():
Since glibc 2.10:
_XOPEN_SOURCE >= 700
Before glibc 2.10:
_GNU_SOURCE
The uselocale() function sets the current locale for the calling
thread, and returns the thread's previously current locale.
After a successful call to uselocale(), any calls by this thread
to functions that depend on the locale will operate as though the
locale has been set to newloc.
The newloc argument can have one of the following values:
A handle returned by a call to newlocale(3) or duplocale(3)
The calling thread's current locale is set to the
specified locale.
The special locale object handle LC_GLOBAL_LOCALE
The calling thread's current locale is set to the global
locale determined by setlocale(3).
(locale_t) 0
The calling thread's current locale is left unchanged (and
the current locale is returned as the function result).
On success, uselocale() returns the locale handle that was set by
the previous call to uselocale() in this thread, or
LC_GLOBAL_LOCALE if there was no such previous call. On error,
it returns (locale_t) 0, and sets errno to indicate the cause of
the error.
EINVAL newloc does not refer to a valid locale object.
The uselocale() function first appeared in version 2.3 of the GNU
C library.
POSIX.1-2008.
Unlike setlocale(3), 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 duplocale(3) and newlocale(3) to obtain a locale
object equivalent to the current locale and modify the desired
categories in that object.
See newlocale(3) and duplocale(3).
locale(1), duplocale(3), freelocale(3), newlocale(3),
setlocale(3), locale(5), locale(7)
This page is part of release 5.10 of the Linux man-pages project.
A description of the project, information about reporting bugs,
and the latest version of this page, can be found at
https://www.kernel.org/doc/man-pages/.
Linux 2020-06-09 USELOCALE(3)
Pages that refer to this page: duplocale(3), isalpha(3), newlocale(3), toupper(3), locale(5), locale(7)
Copyright and license for this manual page
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