1 /* $NetBSD: limits.h,v 1.17 2019/01/21 20:28:17 dholland 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)limits.h 8.3 (Berkeley) 1/4/94 32 */ 33 34 #ifndef _MACHINE_LIMITS_H_ 35 #define _MACHINE_LIMITS_H_ 36 37 #include <sys/featuretest.h> 38 39 #define CHAR_BIT 8 /* number of bits in a char */ 40 41 /* 42 * According to ANSI (section 2.2.4.2), the values below must be usable by 43 * #if preprocessing directives. Additionally, the expression must have the 44 * same type as would an expression that is an object of the corresponding 45 * type converted according to the integral promotions. The subtraction for 46 * INT_MIN and LONG_MIN is so the value is not unsigned; 2147483648 is an 47 * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). 48 * These numbers work for pcc as well. The UINT_MAX and ULONG_MAX values 49 * are written as hex so that GCC will be quiet about large integer constants. 50 */ 51 #define UCHAR_MAX 0xff /* max value for an unsigned char */ 52 #define SCHAR_MAX 0x7f /* max value for a signed char */ 53 #define SCHAR_MIN (-0x7f-1) /* min value for a signed char */ 54 55 #define USHRT_MAX 0xffff /* max value for an unsigned short */ 56 #define SHRT_MAX 0x7fff /* max value for a short */ 57 #define SHRT_MIN (-0x7fff-1) /* min value for a short */ 58 59 #define UINT_MAX 0xffffffffU /* max value for an unsigned int */ 60 #define INT_MAX 0x7fffffff /* max value for an int */ 61 #define INT_MIN (-0x7fffffff-1) /* min value for an int */ 62 63 #define ULONG_MAX 0xffffffffffffffffUL /* max for an unsigned long */ 64 #define LONG_MAX 0x7fffffffffffffffL /* max for a long */ 65 #define LONG_MIN (-0x7fffffffffffffffL-1) /* min for a long */ 66 67 #if defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L || \ 68 defined(_NETBSD_SOURCE) 69 #define ULLONG_MAX 0xffffffffffffffffULL /* max unsigned long long */ 70 #define LLONG_MAX 0x7fffffffffffffffLL /* max signed long long */ 71 #define LLONG_MIN (-0x7fffffffffffffffLL-1) /* min signed long long */ 72 #endif 73 74 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ 75 defined(_NETBSD_SOURCE) 76 #define SSIZE_MAX LONG_MAX /* max value for a ssize_t */ 77 78 #if defined(_NETBSD_SOURCE) 79 #define SSIZE_MIN LONG_MIN /* min value for a ssize_t */ 80 #define SIZE_T_MAX ULONG_MAX /* max value for a size_t */ 81 82 /* Quads and longs are the same on the alpha */ 83 #define UQUAD_MAX (ULONG_MAX) /* max value for a uquad_t */ 84 #define QUAD_MAX (LONG_MAX) /* max value for a quad_t */ 85 #define QUAD_MIN (LONG_MIN) /* min value for a quad_t */ 86 87 #endif /* _NETBSD_SOURCE */ 88 #endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */ 89 90 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) 91 #define LONG_BIT 64 92 #define WORD_BIT 32 93 94 #define DBL_DIG __DBL_DIG__ 95 #define DBL_MAX __DBL_MAX__ 96 #define DBL_MIN __DBL_MIN__ 97 98 #define FLT_DIG __FLT_DIG__ 99 #define FLT_MAX __FLT_MAX__ 100 #define FLT_MIN __FLT_MIN__ 101 #endif 102 103 #endif /* _MACHINE_LIMITS_H_ */ 104