NAME

       nl_langinfo - language information

SYNOPSIS

       #include <langinfo.h>

       char *nl_langinfo(nl_item item);

DESCRIPTION

       The  nl_langinfo()  function  shall  return  a pointer to a string containing information relevant to the
       particular language or cultural area defined in the program's locale (see  <langinfo.h>).   The  manifest
       constant names and values of item are defined in <langinfo.h>.  For example:

              nl_langinfo(ABDAY_1)

       would  return  a  pointer to the string "Dom" if the identified language was Portuguese, and "Sun" if the
       identified language was English.

       Calls to setlocale() with a category corresponding to the category of item (see <langinfo.h>), or to  the
       category LC_ALL , may overwrite the array pointed to by the return value.

       The  nl_langinfo() function need not be reentrant. A function that is not required to be reentrant is not
       required to be thread-safe.

RETURN VALUE

       In a locale where langinfo data is not defined, nl_langinfo() shall return a pointer to the corresponding
       string in the POSIX locale. In all locales, nl_langinfo() shall return a pointer to an  empty  string  if
       item contains an invalid setting.

       This pointer may point to static data that may be overwritten on the next call.

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

   Getting Date and Time Formatting Information
       The  following  example returns a pointer to a string containing date and time formatting information, as
       defined in the LC_TIME category of the current locale.

              #include <time.h>
              #include <langinfo.h>
              ...
              strftime(datestring, sizeof(datestring), nl_langinfo(D_T_FMT), tm);
              ...

APPLICATION USAGE

       The array pointed to by the return value should not be modified by the program, but may  be  modified  by
       further calls to nl_langinfo().

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       setlocale()  ,  the  Base  Definitions  volume  of IEEE Std 1003.1-2001, Chapter 7, Locale, <langinfo.h>,
       <nl_types.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition,
       Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open  Group  Base
       Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers,
       Inc  and  The  Open Group. 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 http://www.opengroup.org/unix/online.html .

IEEE/The Open Group                                   2003                                        NL_LANGINFO(P)