limits.h revision 1.1 1 /*
2 * Copyright (c) 1988 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * from: @(#)limits.h 7.6 (Berkeley) 6/25/92
34 * $Id: limits.h,v 1.1 1993/10/12 03:22:39 deraadt Exp $
35 */
36
37 #define CHAR_BIT 8 /* number of bits in a char */
38 #define MB_LEN_MAX 1 /* no multibyte characters */
39
40 #define CLK_TCK 60 /* ticks per second */
41
42 /*
43 * According to ANSI (section 2.2.4.2), the values below must be usable by
44 * #if preprocessing directives. Additionally, the expression must have the
45 * same type as would an expression that is an object of the corresponding
46 * type converted according to the integral promotions. The subtraction for
47 * INT_MIN and LONG_MIN is so the value is not unsigned; 2147483648 is an
48 * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2).
49 * These numbers work for pcc as well.
50 */
51 #define SCHAR_MAX 127 /* min value for a signed char */
52 #define SCHAR_MIN -128 /* max value for a signed char */
53
54 #define UCHAR_MAX 255 /* max value for an unsigned char */
55 #define CHAR_MAX 127 /* max value for a char */
56 #define CHAR_MIN -128 /* min value for a char */
57
58 #define USHRT_MAX 65535 /* max value for an unsigned short */
59 #define SHRT_MAX 32767 /* max value for a short */
60 #define SHRT_MIN -32768 /* min value for a short */
61
62 #define UINT_MAX 4294967295 /* max value for an unsigned int */
63 #define INT_MAX 2147483647 /* max value for an int */
64 #define INT_MIN (-2147483647-1) /* min value for an int */
65
66 #define ULONG_MAX 4294967295 /* max value for an unsigned long */
67 #define LONG_MAX 2147483647 /* max value for a long */
68 #define LONG_MIN (-2147483647-1) /* min value for a long */
69
70 /* Maximum/minimum values for types from <machine/include/ansi.h>. */
71 #ifndef _ANSI_SOURCE
72
73 /* Quad constants must be written as expressions; #define GCC_ME_HARDER. */
74 #define UQUAD_MAX ((u_quad_t)0-1) /* max value for a uquad_t */
75 /* max value for a quad_t */
76 #define QUAD_MAX ((quad_t)(UQUAD_MAX >> 1))
77 #define QUAD_MIN (-QUAD_MAX-1) /* min value for a quad_t */
78
79 #define SIZE_T_MAX UINT_MAX
80 #endif
81