NAME

       nl_types.h - data types

SYNOPSIS

       #include <nl_types.h>

DESCRIPTION

       The <nl_types.h> header shall contain definitions of at least the following types:

       nl_catd
              Used  by  the  message  catalog  functions  catopen(), catgets(), and catclose() to
              identify a catalog descriptor.

       nl_item
              Used by nl_langinfo() to identify items of langinfo data.   Values  of  objects  of
              type nl_item are defined in <langinfo.h> .

       The <nl_types.h> header shall contain definitions of at least the following constants:

       NL_SETD
              Used  by  gencat when no $set directive is specified in a message text source file;
              see the Internationalization Guide. This constant can be passed  as  the  value  of
              set_id  on  subsequent  calls  to catgets() (that is, to retrieve messages from the
              default message set). The value of NL_SETD is implementation-defined.

       NL_CAT_LOCALE
              Value that must be passed as the oflag argument to catopen() to ensure that message
              catalog  selection depends on the LC_MESSAGES locale category, rather than directly
              on the LANG environment variable.

       The following shall be declared as functions and may also be defined as  macros.  Function
       prototypes shall be provided.

              int       catclose(nl_catd);
              char     *catgets(nl_catd, int, int, const char *);
              nl_catd   catopen(const char *, int);

       The following sections are informative.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       <langinfo.h>   ,   the  System  Interfaces  volume  of  IEEE Std 1003.1-2001,  catclose(),
       catgets(),   catopen(),   nl_langinfo(),   the   Shell    and    Utilities    volume    of
       IEEE Std 1003.1-2001, gencat

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 .