param.h revision 12100 
1/*	$NetBSD: param.h,v 1.4 1995/07/23 18:14:41 ragge Exp $	*/
2
3/*
4 * Copyright (c) 1994, 1995 Jochen Pohl
5 * All Rights Reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *      This product includes software developed by Jochen Pohl for
18 *	The NetBSD Project.
19 * 4. The name of the author may not be used to endorse or promote products
20 *    derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34/*
35 * Minimun size of string buffer. If this is not enough, the buffer
36 * is enlarged in steps of STRBLEN bytes.
37 */
38#define	STRBLEN		256
39
40/*
41 * This defines the size of memory blocks which are used to allocate
42 * memory in larger chunks.
43 */
44#define	MBLKSIZ		((size_t)0x4000)
45
46/*
47 * Sizes of hash tables
48 * Should be a prime. Possible primes are
49 * 307, 401, 503, 601, 701, 809, 907, 1009, 1103, 1201, 1301, 1409, 1511.
50 *
51 * HSHSIZ1	symbol table 1st pass
52 * HSHSIZ2	symbol table 2nd pass
53 * THSHSIZ2	type table 2nd pass
54 */
55#define	HSHSIZ1		503
56#define HSHSIZ2		1009
57#define	THSHSIZ2	1009
58
59/*
60 * Should be set to 1 if the difference of two pointers is of type long
61 * or the value of sizeof is of type unsigned long.
62 */
63#ifdef __alpha__
64#define PTRDIFF_IS_LONG		1
65#define SIZEOF_IS_ULONG		1
66#elif __i386__
67#define PTRDIFF_IS_LONG		0
68#define SIZEOF_IS_ULONG		0
69#elif __m68k__
70#define PTRDIFF_IS_LONG		0
71#define SIZEOF_IS_ULONG		0
72#elif __ns32k__
73#define PTRDIFF_IS_LONG		0
74#define SIZEOF_IS_ULONG		0
75#elif __sparc__
76#define PTRDIFF_IS_LONG		0
77#define SIZEOF_IS_ULONG		0
78#elif __vax__
79#define PTRDIFF_IS_LONG         0
80#define SIZEOF_IS_ULONG         0
81#else
82#error unknown machine type
83#endif
84
85/*
86 * Make sure this matches wchar_t.
87 */
88#define WCHAR	SHORT
89
90#ifndef __GNUC__
91#ifndef lint
92#ifndef QUAD_MAX	/* necessary for mkdep */
93#define QUAD_MAX	LONG_MAX
94#define QUAD_MIN	LONG_MIN
95#define UQUAD_MAX	ULONG_MAX
96#endif
97typedef	long	quad_t;
98typedef	u_long	u_quad_t;
99#endif
100#endif
101
102
103/*
104 * long double only in ANSI C.
105 */
106#ifdef __STDC__
107typedef	long double ldbl_t;
108#else
109typedef	double	ldbl_t;
110#endif
111
112/*
113 * Some traditional compilers are not able to assign structures.
114 */
115#ifdef __STDC__
116#define STRUCT_ASSIGN(dest, src)	(dest) = (src)
117#else
118#define STRUCT_ASSIGN(dest, src)	(void)memcpy(&(dest), &(src), \
119						     sizeof (dest));
120#endif
121