| 1 | /* ANSI and traditional C compatability macros
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| 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000
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| 3 | Free Software Foundation, Inc.
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| 4 | This file is part of the GNU C Library.
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| 5 |
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| 6 | This program is free software; you can redistribute it and/or modify
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| 7 | it under the terms of the GNU General Public License as published by
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| 8 | the Free Software Foundation; either version 2 of the License, or
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| 9 | (at your option) any later version.
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| 10 |
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| 11 | This program is distributed in the hope that it will be useful,
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | GNU General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License
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| 17 | along with this program; if not, write to the Free Software
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| 18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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| 19 |
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| 20 | /* ANSI and traditional C compatibility macros
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| 21 |
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| 22 | ANSI C is assumed if __STDC__ is #defined.
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| 23 |
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| 24 | Macro ANSI C definition Traditional C definition
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| 25 | ----- ---- - ---------- ----------- - ----------
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| 26 | PTR `void *' `char *'
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| 27 | LONG_DOUBLE `long double' `double'
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| 28 | VOLATILE `volatile' `'
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| 29 | SIGNED `signed' `'
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| 30 | PTRCONST `void *const' `char *'
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| 31 | ANSI_PROTOTYPES 1 not defined
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| 32 |
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| 33 | CONST is also defined, but is obsolete. Just use const.
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| 34 |
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| 35 | obsolete -- DEFUN (name, arglist, args)
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| 36 |
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| 37 | Defines function NAME.
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| 38 |
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| 39 | ARGLIST lists the arguments, separated by commas and enclosed in
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| 40 | parentheses. ARGLIST becomes the argument list in traditional C.
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| 41 |
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| 42 | ARGS list the arguments with their types. It becomes a prototype in
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| 43 | ANSI C, and the type declarations in traditional C. Arguments should
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| 44 | be separated with `AND'. For functions with a variable number of
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| 45 | arguments, the last thing listed should be `DOTS'.
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| 46 |
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| 47 | obsolete -- DEFUN_VOID (name)
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| 48 |
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| 49 | Defines a function NAME, which takes no arguments.
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| 50 |
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| 51 | obsolete -- EXFUN (name, (prototype)) -- obsolete.
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| 52 |
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| 53 | Replaced by PARAMS. Do not use; will disappear someday soon.
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| 54 | Was used in external function declarations.
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| 55 | In ANSI C it is `NAME PROTOTYPE' (so PROTOTYPE should be enclosed in
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| 56 | parentheses). In traditional C it is `NAME()'.
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| 57 | For a function that takes no arguments, PROTOTYPE should be `(void)'.
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| 58 |
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| 59 | obsolete -- PROTO (type, name, (prototype) -- obsolete.
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| 60 |
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| 61 | This one has also been replaced by PARAMS. Do not use.
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| 62 |
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| 63 | PARAMS ((args))
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| 64 |
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| 65 | We could use the EXFUN macro to handle prototype declarations, but
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| 66 | the name is misleading and the result is ugly. So we just define a
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| 67 | simple macro to handle the parameter lists, as in:
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| 68 |
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| 69 | static int foo PARAMS ((int, char));
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| 70 |
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| 71 | This produces: `static int foo();' or `static int foo (int, char);'
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| 72 |
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| 73 | EXFUN would have done it like this:
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| 74 |
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| 75 | static int EXFUN (foo, (int, char));
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| 76 |
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| 77 | but the function is not external...and it's hard to visually parse
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| 78 | the function name out of the mess. EXFUN should be considered
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| 79 | obsolete; new code should be written to use PARAMS.
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| 80 |
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| 81 | DOTS is also obsolete.
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| 82 |
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| 83 | Examples:
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| 84 |
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| 85 | extern int printf PARAMS ((const char *format, ...));
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| 86 | */
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| 87 |
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| 88 | #ifndef _ANSIDECL_H
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| 89 |
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| 90 | #define _ANSIDECL_H 1
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| 91 |
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| 92 |
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| 93 | /* Every source file includes this file,
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| 94 | so they will all get the switch for lint. */
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| 95 | /* LINTLIBRARY */
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| 96 |
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| 97 |
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| 98 | #if defined (__STDC__) || defined (_AIX) || (defined (__mips) && defined (_SYSTYPE_SVR4)) || defined(_WIN32)
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| 99 | /* All known AIX compilers implement these things (but don't always
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| 100 | define __STDC__). The RISC/OS MIPS compiler defines these things
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| 101 | in SVR4 mode, but does not define __STDC__. */
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| 102 |
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| 103 | #define PTR void *
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| 104 | #define PTRCONST void *CONST
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| 105 | #define LONG_DOUBLE long double
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| 106 |
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| 107 | #ifndef IN_GCC
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| 108 | #define AND ,
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| 109 | #define NOARGS void
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| 110 | #define VOLATILE volatile
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| 111 | #define SIGNED signed
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| 112 | #endif /* ! IN_GCC */
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| 113 |
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| 114 | #define PARAMS(paramlist) paramlist
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| 115 | #define ANSI_PROTOTYPES 1
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| 116 |
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| 117 | #define VPARAMS(ARGS) ARGS
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| 118 | #define VA_START(va_list,var) va_start(va_list,var)
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| 119 |
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| 120 | /* These are obsolete. Do not use. */
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| 121 | #ifndef IN_GCC
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| 122 | #define CONST const
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| 123 | #define DOTS , ...
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| 124 | #define PROTO(type, name, arglist) type name arglist
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| 125 | #define EXFUN(name, proto) name proto
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| 126 | #define DEFUN(name, arglist, args) name(args)
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| 127 | #define DEFUN_VOID(name) name(void)
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| 128 | #endif /* ! IN_GCC */
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| 129 |
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| 130 | #else /* Not ANSI C. */
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| 131 |
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| 132 | #define PTR char *
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| 133 | #define PTRCONST PTR
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| 134 | #define LONG_DOUBLE double
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| 135 |
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| 136 | #ifndef IN_GCC
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| 137 | #define AND ;
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| 138 | #define NOARGS
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| 139 | #define VOLATILE
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| 140 | #define SIGNED
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| 141 | #endif /* !IN_GCC */
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| 142 |
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| 143 | #ifndef const /* some systems define it in header files for non-ansi mode */
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| 144 | #define const
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| 145 | #endif
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| 146 |
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| 147 | #define PARAMS(paramlist) ()
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| 148 |
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| 149 | #define VPARAMS(ARGS) (va_alist) va_dcl
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| 150 | #define VA_START(va_list,var) va_start(va_list)
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| 151 |
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| 152 | /* These are obsolete. Do not use. */
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| 153 | #ifndef IN_GCC
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