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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /ansidecl.h
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+/* Copyright (C) 1991 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library 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 1, or (at your option)
+any later version.
+
+The GNU C Library 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 the GNU C Library; see the file COPYING. If not, write to
+the Free Software Foundation, 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)
+
+#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()
+
+#endif /* ANSI C. */
+
+
+#endif /* ansidecl.h */