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.  Indi-
       vidual and additional elements of the locale categories can be queried.

       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 character 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 strftime(3) to represent time and date  in  a  locale-spe-
              cific way.

       D_FMT (LC_TIME)
              Return a string that can be used as a format string for strftime(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 strftime(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 interna-
              tional convention (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 digits).

       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 character.

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

RETURN VALUE
       If no locale has been selected for the appropriate category, nl_langinfo() 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 3.25 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)