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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 .