arch/powerpc/xmon/ansidecl.h

   1 /* ANSI and traditional C compatibility macros
   2    Copyright 1991, 1992 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  18
  19 /* ANSI and traditional C compatibility macros
  20
  21    ANSI C is assumed if __STDC__ is #defined.
  22
  23    Macro        ANSI C definition       Traditional C definition
  24    -----        ---- - ----------       ----------- - ----------
  25    PTR          `void *'                `char *'
  26    LONG_DOUBLE  `long double'           `double'
  27    VOLATILE     `volatile'              `'
  28    SIGNED       `signed'                `'
  29    PTRCONST     `void *const'           `char *'
  30    ANSI_PROTOTYPES  1                   not defined
  31
  32    CONST is also defined, but is obsolete.  Just use const.
  33
  34    DEFUN (name, arglist, args)
  35
  36         Defines function NAME.
  37
  38         ARGLIST lists the arguments, separated by commas and enclosed in
  39         parentheses.  ARGLIST becomes the argument list in traditional C.
  40
  41         ARGS list the arguments with their types.  It becomes a prototype in
  42         ANSI C, and the type declarations in traditional C.  Arguments should
  43         be separated with `AND'.  For functions with a variable number of
  44         arguments, the last thing listed should be `DOTS'.
  45
  46    DEFUN_VOID (name)
  47
  48         Defines a function NAME, which takes no arguments.
  49
  50    obsolete --     EXFUN (name, (prototype))    -- obsolete.
  51
  52         Replaced by PARAMS.  Do not use; will disappear someday soon.
  53         Was used in external function declarations.
  54         In ANSI C it is `NAME PROTOTYPE' (so PROTOTYPE should be enclosed in
  55         parentheses).  In traditional C it is `NAME()'.
  56         For a function that takes no arguments, PROTOTYPE should be `(void)'.
  57
  58     PARAMS ((args))
  59
  60         We could use the EXFUN macro to handle prototype declarations, but
  61         the name is misleading and the result is ugly.  So we just define a
  62         simple macro to handle the parameter lists, as in:
  63
  64               static int foo PARAMS ((int, char));
  65
  66         This produces:  `static int foo();' or `static int foo (int, char);'
  67
  68         EXFUN would have done it like this:
  69
  70               static int EXFUN (foo, (int, char));
  71
  72         but the function is not external...and it's hard to visually parse
  73         the function name out of the mess.   EXFUN should be considered
  74         obsolete; new code should be written to use PARAMS.
  75
  76     For example:
  77         extern int printf PARAMS ((CONST char *format DOTS));
  78         int DEFUN(fprintf, (stream, format),
  79                   FILE *stream AND CONST char *format DOTS) { ... }
  80         void DEFUN_VOID(abort) { ... }
  81 */
  82
  83 #ifndef _ANSIDECL_H
  84
  85 #define _ANSIDECL_H     1
  86
  87
  88 /* Every source file includes this file,
  89    so they will all get the switch for lint.  */
  90 /* LINTLIBRARY */
  91
  92
  93 #if defined (__STDC__) || defined (_AIX) || (defined (__mips) && defined (_SYSTYPE_SVR4)) || defined(WIN32)
  94 /* All known AIX compilers implement these things (but don't always
  95    define __STDC__).  The RISC/OS MIPS compiler defines these things
  96    in SVR4 mode, but does not define __STDC__.  */
  97
  98 #define PTR             void *
  99 #define PTRCONST        void *CONST
 100 #define LONG_DOUBLE     long double
 101
 102 #define AND             ,
 103 #define NOARGS          void
 104 #define CONST           const
 105 #define VOLATILE        volatile
 106 #define SIGNED          signed
 107 #define DOTS            , ...
 108
 109 #define EXFUN(name, proto)              name proto
 110 #define DEFUN(name, arglist, args)      name(args)
 111 #define DEFUN_VOID(name)                name(void)
 112
 113 #define PROTO(type, name, arglist)      type name arglist
 114 #define PARAMS(paramlist)               paramlist
 115 #define ANSI_PROTOTYPES                 1
 116
 117 #else   /* Not ANSI C.  */
 118
 119 #define PTR             char *
 120 #define PTRCONST        PTR
 121 #define LONG_DOUBLE     double
 122
 123 #define AND             ;
 124 #define NOARGS
 125 #define CONST
 126 #ifndef const /* some systems define it in header files for non-ansi mode */
 127 #define const
 128 #endif
 129 #define VOLATILE
 130 #define SIGNED
 131 #define DOTS
 132
 133 #define EXFUN(name, proto)              name()
 134 #define DEFUN(name, arglist, args)      name arglist args;
 135 #define DEFUN_VOID(name)                name()
 136 #define PROTO(type, name, arglist) type name ()
 137 #define PARAMS(paramlist)               ()
 138
 139 #endif  /* ANSI C.  */
 140
 141 #endif  /* ansidecl.h   */