1 /* SPDX-License-Identifier: GPL-2.0-or-later * 1
2 /* ANSI and traditional C compatibility macros
3 Copyright 1991, 1992 Free Software Foundati
4 This file is part of the GNU C Library.
5
6 */
7
8 /* ANSI and traditional C compatibility macros
9
10 ANSI C is assumed if __STDC__ is #defined.
11
12 Macro ANSI C definition Tradit
13 ----- ---- - ---------- ------
14 PTR `void *' `char
15 LONG_DOUBLE `long double' `doubl
16 VOLATILE `volatile' `'
17 SIGNED `signed' `'
18 PTRCONST `void *const' `char
19 ANSI_PROTOTYPES 1 not de
20
21 CONST is also defined, but is obsolete. Ju
22
23 DEFUN (name, arglist, args)
24
25 Defines function NAME.
26
27 ARGLIST lists the arguments, separated
28 parentheses. ARGLIST becomes the argu
29
30 ARGS list the arguments with their typ
31 ANSI C, and the type declarations in t
32 be separated with `AND'. For function
33 arguments, the last thing listed shoul
34
35 DEFUN_VOID (name)
36
37 Defines a function NAME, which takes n
38
39 obsolete -- EXFUN (name, (prototype))
40
41 Replaced by PARAMS. Do not use; will
42 Was used in external function declarat
43 In ANSI C it is `NAME PROTOTYPE' (so P
44 parentheses). In traditional C it is
45 For a function that takes no arguments
46
47 PARAMS ((args))
48
49 We could use the EXFUN macro to handle
50 the name is misleading and the result
51 simple macro to handle the parameter l
52
53 static int foo PARAMS ((int, cha
54
55 This produces: `static int foo();' or
56
57 EXFUN would have done it like this:
58
59 static int EXFUN (foo, (int, cha
60
61 but the function is not external...and
62 the function name out of the mess. E
63 obsolete; new code should be written t
64
65 For example:
66 extern int printf PARAMS ((CONST char
67 int DEFUN(fprintf, (stream, format),
68 FILE *stream AND CONST char
69 void DEFUN_VOID(abort) { ... }
70 */
71
72 #ifndef _ANSIDECL_H
73
74 #define _ANSIDECL_H 1
75
76
77 /* Every source file includes this file,
78 so they will all get the switch for lint.
79 /* LINTLIBRARY */
80
81
82 #if defined (__STDC__) || defined (_AIX) || (d
83 /* All known AIX compilers implement these thi
84 define __STDC__). The RISC/OS MIPS compile
85 in SVR4 mode, but does not define __STDC__.
86
87 #define PTR void *
88 #define PTRCONST void *CONST
89 #define LONG_DOUBLE long double
90
91 #define AND ,
92 #define NOARGS void
93 #define CONST const
94 #define VOLATILE volatile
95 #define SIGNED signed
96 #define DOTS , ...
97
98 #define EXFUN(name, proto) name p
99 #define DEFUN(name, arglist, args) name(a
100 #define DEFUN_VOID(name) name(v
101
102 #define PROTO(type, name, arglist) type n
103 #define PARAMS(paramlist) paraml
104 #define ANSI_PROTOTYPES 1
105
106 #else /* Not ANSI C. */
107
108 #define PTR char *
109 #define PTRCONST PTR
110 #define LONG_DOUBLE double
111
112 #define AND ;
113 #define NOARGS
114 #define CONST
115 #ifndef const /* some systems define it in hea
116 #define const
117 #endif
118 #define VOLATILE
119 #define SIGNED
120 #define DOTS
121
122 #define EXFUN(name, proto) name()
123 #define DEFUN(name, arglist, args) name a
124 #define DEFUN_VOID(name) name()
125 #define PROTO(type, name, arglist) type name (
126 #define PARAMS(paramlist) ()
127
128 #endif /* ANSI C. */
129
130 #endif /* ansidecl.h */
131
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.