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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
              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-specific 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  international
              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

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