Section: POSIX Programmer's Manual (3P)
This manual page is part of the POSIX Programmer's Manual.
The Linux implementation of this interface may differ (consult
the corresponding Linux manual page for details of Linux behavior),
or the interface may not be implemented on Linux.
--- use locale in current thread
locale_t uselocale(locale_t newloc);
function shall set the current locale for the current thread to the
locale represented by
The value for the
argument shall be one of the following:
A value returned by the
The special locale object descriptor LC_GLOBAL_LOCALE
function has been called to install a thread-local locale, the behavior
of every interface using data from the current locale shall be affected
for the calling thread. The current locale for other threads shall
argument is (locale_t)0,
the object returned is the current locale or LC_GLOBAL_LOCALE if there
has been no previous call to
for the current thread.
argument is LC_GLOBAL_LOCALE, the thread shall use the global locale
determined by the
Upon successful completion, the
function shall return the locale handle from the previous call for the
current thread, or LC_GLOBAL_LOCALE if there was no such previous call.
shall return (locale_t
to indicate the error.
function may fail if:
is not a valid locale object.
The following sections are informative.
function does not allow replacing some locale categories
only. Applications that need to install a locale which differs only in
a few categories must use
to change a locale object equivalent to the currently used locale and
The Base Definitions volume of POSIX.1-2008,
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 7, Copyright (C) 2013 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group.
(This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online at
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