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NL_LANGINFO(3)		   Linux Programmer's Manual		NL_LANGINFO(3)

NAME
       nl_langinfo - query language and locale information

SYNOPSIS
       #include <langinfo.h>

       char *nl_langinfo(nl_item item);

DESCRIPTION
       The  nl_langinfo()  function provides access to locale information in a
       more flexible way than localeconv(3) does.  Individual  and  additional
       elements	 of  the locale categories can be queried.  setlocale(3) needs
       to be executed with proper arguments before.

       Examples for the locale elements that can be specified  in  item	 using
       the constants defined in <langinfo.h> are:

       CODESET (LC_CTYPE)
	      Return  a string with the name of the character encoding used in
	      the  selected  locale,  such  as	 "UTF-8",   "ISO-8859-1",   or
	      "ANSI_X3.4-1968"	(better	 known as US-ASCII).  This is the same
	      string that you get with "locale charmap".  For a list of	 char‐
	      acter encoding names, try "locale -m", cf. locale(1).

       D_T_FMT (LC_TIME)
	      Return  a	 string	 that can be used as a format string for strf‐
	      time(3) to represent time and date in a locale-specific way.

       D_FMT (LC_TIME)
	      Return a string that can be used as a format  string  for	 strf‐
	      time(3) to represent a date in a locale-specific way.

       T_FMT (LC_TIME)
	      Return  a	 string	 that can be used as a format string for strf‐
	      time(3) to represent a time in a locale-specific way.

       DAY_{1–7} (LC_TIME)
	      Return name of the n-th day of the week. [Warning: this  follows
	      the  US convention DAY_1 = Sunday, not the international conven‐
	      tion (ISO 8601) that Monday is the first day of the week.]

       ABDAY_{1–7} (LC_TIME)
	      Return abbreviated name of the n-th day of the week.

       MON_{1–12} (LC_TIME)
	      Return name of the n-th month.

       ABMON_{1–12} (LC_TIME)
	      Return abbreviated name of the n-th month.

       RADIXCHAR (LC_NUMERIC)
	      Return radix character (decimal dot, decimal comma, etc.).

       THOUSEP (LC_NUMERIC)
	      Return separator character for thousands (groups of  three  dig‐
	      its).

       YESEXPR (LC_MESSAGES)
	      Return  a	 regular expression that can be used with the regex(3)
	      function to recognize a positive response to a yes/no question.

       NOEXPR (LC_MESSAGES)
	      Return a regular expression that can be used with	 the  regex(3)
	      function to recognize a negative response to a yes/no question.

       CRNCYSTR (LC_MONETARY)
	      Return the currency symbol, preceded by "-" if the symbol should
	      appear before the value, "+" if the symbol should	 appear	 after
	      the value, or "." if the symbol should replace the radix charac‐
	      ter.

       The above  list	covers	just  some  examples  of  items	 that  can  be
       requested.   For a more detailed list, consult The GNU C Library Refer‐
       ence Manual.

RETURN VALUE
       If no locale has been selected for the appropriate  category,  nl_lang‐
       info() returns a pointer to the corresponding string in the "C" locale.

       If item is not valid, a pointer to an empty string is returned.

       This  pointer  may  point to static data that may be overwritten on the
       next call to nl_langinfo() or setlocale(3).

CONFORMING TO
       SUSv2, POSIX.1-2001.

SEE ALSO
       locale(1), localeconv(3), setlocale(3), charsets(7), locale(7)
       The GNU C Library Reference Manual

COLOPHON
       This page is part of release 3.23 of the Linux  man-pages  project.   A
       description  of	the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

GNU				  2001-05-11			NL_LANGINFO(3)
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