| /* 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 */ |