ansidecl.h

   1 /* Copyright (C) 1991 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or modify
   5 it under the terms of the GNU General Public License as published by
   6 the Free Software Foundation; either version 1, or (at your option)
   7 any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with the GNU C Library; see the file COPYING.  If not, write to
  16 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  17
  18 /* ANSI and traditional C compatibility macros
  19
  20    ANSI C is assumed if __STDC__ is #defined.
  21
  22    Macro        ANSI C definition       Traditional C definition
  23    -----        ---- - ----------       ----------- - ----------
  24    PTR          `void *'                `char *'
  25    LONG_DOUBLE  `long double'           `double'
  26    CONST        `const'                 `'
  27    VOLATILE     `volatile'              `'
  28    SIGNED       `signed'                `'
  29    PTRCONST     `void *const'           `char *'
  30
  31    DEFUN(name, arglist, args)
  32
  33         Defines function NAME.
  34
  35         ARGLIST lists the arguments, separated by commas and enclosed in
  36         parentheses.  ARGLIST becomes the argument list in traditional C.
  37
  38         ARGS list the arguments with their types.  It becomes a prototype in
  39         ANSI C, and the type declarations in traditional C.  Arguments should
  40         be separated with `AND'.  For functions with a variable number of
  41         arguments, the last thing listed should be `DOTS'.
  42
  43    DEFUN_VOID(name)
  44
  45         Defines a function NAME, which takes no arguments.
  46
  47    EXFUN(name, prototype)
  48
  49         Is used in an external function declaration.
  50         In ANSI C it is `NAMEPROTOTYPE' (so PROTOTYPE should be enclosed in
  51         parentheses).  In traditional C it is `NAME()'.
  52         For a function that takes no arguments, PROTOTYPE should be `(NOARGS)'.
  53
  54     For example:
  55         extern int EXFUN(printf, (CONST char *format DOTS));
  56         int DEFUN(fprintf, (stream, format),
  57                   FILE *stream AND CONST char *format DOTS) { ... }
  58         void DEFUN_VOID(abort) { ... }
  59 */
  60
  61 #ifndef _ANSIDECL_H
  62
  63 #define _ANSIDECL_H     1
  64
  65
  66 /* Every source file includes this file,
  67    so they will all get the switch for lint.  */
  68 /* LINTLIBRARY */
  69
  70
  71 #ifdef  __STDC__
  72
  73 #define PTR             void *
  74 #define PTRCONST        void *CONST
  75 #define LONG_DOUBLE     long double
  76
  77 #define AND             ,
  78 #define NOARGS          void
  79 #define CONST           const
  80 #define VOLATILE        volatile
  81 #define SIGNED          signed
  82 #define DOTS            , ...
  83
  84 #define EXFUN(name, proto)              name proto
  85 #define DEFUN(name, arglist, args)      name(args)
  86 #define DEFUN_VOID(name)                name(NOARGS)
  87
  88 #else   /* Not ANSI C.  */
  89
  90 #define PTR             char *
  91 #define PTRCONST        PTR
  92 #define LONG_DOUBLE     double
  93
  94 #define AND             ;
  95 #define NOARGS
  96 #define CONST
  97 #define VOLATILE
  98 #define SIGNED
  99 #define DOTS
 100
 101 #define EXFUN(name, proto)              name()
 102 #define DEFUN(name, arglist, args)      name arglist args;
 103 #define DEFUN_VOID(name)                name()
 104
 105 #endif  /* ANSI C.  */
 106
 107
 108 #endif  /* ansidecl.h   */