uselocale(3p) — Linux manual page


USELOCALE(3P)             POSIX Programmer's Manual            USELOCALE(3P)

PROLOG         top

       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.

NAME         top

       uselocale — use locale in current thread

SYNOPSIS         top

       #include <locale.h>

       locale_t uselocale(locale_t newloc);

DESCRIPTION         top

       The uselocale() function shall set the current locale for the current
       thread to the locale represented by newloc.

       The value for the newloc argument shall be one of the following:

        1. A value returned by the newlocale() or duplocale() functions

        2. The special locale object descriptor LC_GLOBAL_LOCALE

        3. (locale_t)0

       Once the uselocale() 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 remain unchanged.

       If the newloc argument is (locale_t)0, the object returned is the
       current locale or LC_GLOBAL_LOCALE if there has been no previous call
       to uselocale() for the current thread.

       If the newloc argument is LC_GLOBAL_LOCALE, the thread shall use the
       global locale determined by the setlocale() function.

RETURN VALUE         top

       Upon successful completion, the uselocale() 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.  Otherwise,
       uselocale() shall return (locale_t)0 and set errno to indicate the

ERRORS         top

       The uselocale() function may fail if:

       EINVAL locale is not a valid locale object.

       The following sections are informative.

EXAMPLES         top



       Unlike the setlocale() function, the uselocale() 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
       newlocale() to change a locale object equivalent to the currently
       used locale and install it.

RATIONALE         top




SEE ALSO         top

       duplocale(3p), freelocale(3p), newlocale(3p), setlocale(3p)

       The Base Definitions volume of POSIX.1‐2008, locale.h(0p)

COPYRIGHT         top

       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 .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the
       source files to man page format. To report such errors, see .

IEEE/The Open Group                 2013                       USELOCALE(3P)

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