1 /* $NetBSD: limits.h,v 1.8 1995/03/28 18:19:16 jtc Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1993 5 * The Regents of the University of California. 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 the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)limits.h 8.3 (Berkeley) 1/4/94 36 */ 37 38 #define CHAR_BIT 8 /* number of bits in a char */ 39 #define MB_LEN_MAX 6 /* Allow 31 bit UTF2 */ 40 41 #ifdef _KERNEL 42 #define CLK_TCK 60 /* ticks per second */ 43 #endif 44 45 /* 46 * According to ANSI (section 2.2.4.2), the values below must be usable by 47 * #if preprocessing directives. Additionally, the expression must have the 48 * same type as would an expression that is an object of the corresponding 49 * type converted according to the integral promotions. The subtraction for 50 * INT_MIN and LONG_MIN is so the value is not unsigned; 2147483648 is an 51 * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). 52 * These numbers work for pcc as well. The UINT_MAX and ULONG_MAX values 53 * are written as hex so that GCC will be quiet about large integer constants. 54 */ 55 #define SCHAR_MAX 127 /* min value for a signed char */ 56 #define SCHAR_MIN (-128) /* max value for a signed char */ 57 58 #define UCHAR_MAX 255 /* max value for an unsigned char */ 59 #define CHAR_MAX 127 /* max value for a char */ 60 #define CHAR_MIN (-128) /* min value for a char */ 61 62 #define USHRT_MAX 65535 /* max value for an unsigned short */ 63 #define SHRT_MAX 32767 /* max value for a short */ 64 #define SHRT_MIN (-32768) /* min value for a short */ 65 66 #define UINT_MAX 0xffffffff /* max value for an unsigned int */ 67 #define INT_MAX 2147483647 /* max value for an int */ 68 #define INT_MIN (-2147483647-1) /* min value for an int */ 69 70 #define ULONG_MAX 0xffffffff /* max value for an unsigned long */ 71 #define LONG_MAX 2147483647 /* max value for a long */ 72 #define LONG_MIN (-2147483647-1) /* min value for a long */ 73 74 #if !defined(_ANSI_SOURCE) 75 #define SSIZE_MAX INT_MAX /* max value for a ssize_t */ 76 77 #if !defined(_POSIX_SOURCE) && !defined(_XOPEN_SOURCE) 78 #define SIZE_T_MAX UINT_MAX /* max value for a size_t */ 79 80 /* GCC requires that quad constants be written as expressions. */ 81 #define UQUAD_MAX ((u_quad_t)0-1) /* max value for a uquad_t */ 82 /* max value for a quad_t */ 83 #define QUAD_MAX ((quad_t)(UQUAD_MAX >> 1)) 84 #define QUAD_MIN (-QUAD_MAX-1) /* min value for a quad_t */ 85 86 #endif /* !_POSIX_SOURCE && !_XOPEN_SOURCE */ 87 #endif /* !_ANSI_SOURCE */ 88 89 #if (!defined(_ANSI_SOURCE)&&!defined(_POSIX_SOURCE)) || defined(_XOPEN_SOURCE) 90 #define LONG_BIT 32 91 #define WORD_BIT 32 92 93 #define DBL_DIG 15 94 #define DBL_MAX 1.797693134862316E+308 95 #define DBL_MIN 2.225073858507201E-308 96 97 #define FLT_DIG 6 98 #define FLT_MAX 3.40282347E+38F 99 #define FLT_MIN 1.17549435E-38F 100 #endif 101