centos man page for nl_langinfo

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

PROLOG
       This  manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (consult the correspond-
       ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

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 exam-
       ple:

	      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 Technol-
       ogy -- 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(3P)