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/* ANSI and traditional C compatability macros
Copyright 1991 Free Software Foundation, Inc.
This file is part of the GNU C Library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* ANSI and traditional C compatibility macros
ANSI C is assumed if __STDC__ is #defined.
Macro ANSI C definition Traditional C definition
----- ---- - ---------- ----------- - ----------
PTR `void *' `char *'
LONG_DOUBLE `long double' `double'
CONST `const' `'
VOLATILE `volatile' `'
SIGNED `signed' `'
PTRCONST `void *const' `char *'
DEFUN(name, arglist, args)
Defines function NAME.
ARGLIST lists the arguments, separated by commas and enclosed in
parentheses. ARGLIST becomes the argument list in traditional C.
ARGS list the arguments with their types. It becomes a prototype in
ANSI C, and the type declarations in traditional C. Arguments should
be separated with `AND'. For functions with a variable number of
arguments, the last thing listed should be `DOTS'.
DEFUN_VOID(name)
Defines a function NAME, which takes no arguments.
EXFUN(name, prototype)
Is used in an external function declaration.
In ANSI C it is `NAMEPROTOTYPE' (so PROTOTYPE should be enclosed in
parentheses). In traditional C it is `NAME()'.
For a function that takes no arguments, PROTOTYPE should be `(NOARGS)'.
For example:
extern int EXFUN(printf, (CONST char *format DOTS));
int DEFUN(fprintf, (stream, format),
FILE *stream AND CONST char *format DOTS) { ... }
void DEFUN_VOID(abort) { ... }
*/
#ifndef _ANSIDECL_H
#define _ANSIDECL_H 1
/* Every source file includes this file,
so they will all get the switch for lint. */
/* LINTLIBRARY */
#ifdef __STDC__
#define PTR void *
#define PTRCONST void *CONST
#define LONG_DOUBLE long double
#define AND ,
#define NOARGS void
#define CONST const
#define VOLATILE volatile
#define SIGNED signed
#define DOTS , ...
#define EXFUN(name, proto) name proto
#define DEFUN(name, arglist, args) name(args)
#define DEFUN_VOID(name) name(NOARGS)
#define PROTO(type, name, arglist) type name arglist
/* We could use the EXFUN macro to handle prototypes, but
the name is misleading and the result is ugly. So just define a
simple macro to handle the parameter lists, as in:
static int foo PARAMS ((int, char));
EXFUN would do it like this:
static int EXFUN (foo, (int, char));
but the function is not external... EXFUN should be considered
obsolete, and new code written to use PARAMS. */
#define PARAMS(paramlist) paramlist
#else /* Not ANSI C. */
#define PTR char *
#define PTRCONST PTR
#define LONG_DOUBLE double
#define AND ;
#define NOARGS
#define CONST
#define VOLATILE
#define SIGNED
#define DOTS
#define EXFUN(name, proto) name()
#define DEFUN(name, arglist, args) name arglist args;
#define DEFUN_VOID(name) name()
#define PROTO(type, name, arglist) type name ()
#define PARAMS(paramlist) ()
#endif /* ANSI C. */
#endif /* ansidecl.h */
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