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+/* ANSI and traditional C compatibility macros
+ Copyright 1991, 1992 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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'
+ VOLATILE `volatile' `'
+ SIGNED `signed' `'
+ PTRCONST `void *const' `char *'
+ ANSI_PROTOTYPES 1 not defined
+
+ CONST is also defined, but is obsolete. Just use const.
+
+ 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.
+
+ obsolete -- EXFUN (name, (prototype)) -- obsolete.
+
+ Replaced by PARAMS. Do not use; will disappear someday soon.
+ Was used in external function declarations.
+ In ANSI C it is `NAME PROTOTYPE' (so PROTOTYPE should be enclosed in
+ parentheses). In traditional C it is `NAME()'.
+ For a function that takes no arguments, PROTOTYPE should be `(void)'.
+
+ PARAMS ((args))
+
+ We could use the EXFUN macro to handle prototype declarations, but
+ the name is misleading and the result is ugly. So we just define a
+ simple macro to handle the parameter lists, as in:
+
+ static int foo PARAMS ((int, char));
+
+ This produces: `static int foo();' or `static int foo (int, char);'
+
+ EXFUN would have done it like this:
+
+ static int EXFUN (foo, (int, char));
+
+ but the function is not external...and it's hard to visually parse
+ the function name out of the mess. EXFUN should be considered
+ obsolete; new code should be written to use PARAMS.
+
+ For example:
+ extern int printf PARAMS ((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 */
+
+
+#if defined (__STDC__) || defined (_AIX) || (defined (__mips) && defined (_SYSTYPE_SVR4)) || defined(WIN32)
+/* All known AIX compilers implement these things (but don't always
+ define __STDC__). The RISC/OS MIPS compiler defines these things
+ in SVR4 mode, but does not define __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(void)
+
+#define PROTO(type, name, arglist) type name arglist
+#define PARAMS(paramlist) paramlist
+#define ANSI_PROTOTYPES 1
+
+#else /* Not ANSI C. */
+
+#define PTR char *
+#define PTRCONST PTR
+#define LONG_DOUBLE double
+
+#define AND ;
+#define NOARGS
+#define CONST
+#ifndef const /* some systems define it in header files for non-ansi mode */
+#define const
+#endif
+#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 */