1 /* $NetBSD: limits.h,v 1.7 2000/08/08 22:31:13 tshiozak 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 #ifndef _MACHINE_LIMITS_H_ 39 #define _MACHINE_LIMITS_H_ 40 41 #define CHAR_BIT 8 /* number of bits in a char */ 42 #define MB_LEN_MAX 32 /* Allow 31 bit UTF2 */ 43 44 /* 45 * According to ANSI (section 2.2.4.2), the values below must be usable by 46 * #if preprocessing directives. Additionally, the expression must have the 47 * same type as would an expression that is an object of the corresponding 48 * type converted according to the integral promotions. The subtraction for 49 * INT_MIN and LONG_MIN is so the value is not unsigned; 2147483648 is an 50 * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). 51 * These numbers work for pcc as well. The UINT_MAX and ULONG_MAX values 52 * are written as hex so that GCC will be quiet about large integer constants. 53 */ 54 #define SCHAR_MAX 0x7f /* max value for a signed char */ 55 #define SCHAR_MIN (-0x7f-1) /* min value for a signed char */ 56 57 #define UCHAR_MAX 0xffU /* max value for an unsigned char */ 58 #define CHAR_MAX 0x7f /* max value for a char */ 59 #define CHAR_MIN (-0x7f-1) /* min value for a char */ 60 61 #define USHRT_MAX 0xffffU /* max value for an unsigned short */ 62 #define SHRT_MAX 0x7fff /* max value for a short */ 63 #define SHRT_MIN (-0x7fff-1) /* min value for a short */ 64 65 #define UINT_MAX 0xffffffffU /* max value for an unsigned int */ 66 #define INT_MAX 0x7fffffff /* max value for an int */ 67 #define INT_MIN (-0x7fffffff-1) /* min value for an int */ 68 69 #define ULONG_MAX 0xffffffffffffffffUL /* max for an unsigned long */ 70 #define LONG_MAX 0x7fffffffffffffffL /* max for a long */ 71 #define LONG_MIN (-0x7fffffffffffffffL-1) /* min for a long */ 72 73 #if !defined(_ANSI_SOURCE) 74 #define SSIZE_MAX LONG_MAX /* max value for a ssize_t */ 75 76 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) || \ 77 defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L 78 #define ULLONG_MAX 0xffffffffffffffffULL /* max unsigned long long */ 79 #define LLONG_MAX 0x7fffffffffffffffLL /* max signed long long */ 80 #define LLONG_MIN (-0x7fffffffffffffffLL-1) /* min signed long long */ 81 #endif 82 83 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) 84 #define SIZE_T_MAX ULONG_MAX /* max value for a size_t */ 85 86 /* Quads and longs are the same on the alpha */ 87 #define UQUAD_MAX (ULONG_MAX) /* max value for a uquad_t */ 88 #define QUAD_MAX (LONG_MAX) /* max value for a quad_t */ 89 #define QUAD_MIN (LONG_MIN) /* min value for a quad_t */ 90 91 #endif /* !_POSIX_C_SOURCE && !_XOPEN_SOURCE */ 92 #endif /* !_ANSI_SOURCE */ 93 94 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) || \ 95 defined(_XOPEN_SOURCE) 96 #define LONG_BIT 64 97 #define WORD_BIT 32 98 99 #define DBL_DIG 15 100 #define DBL_MAX 1.7976931348623157E+308 101 #define DBL_MIN 2.2250738585072014E-308 102 103 #define FLT_DIG 6 104 #define FLT_MAX 3.40282347E+38F 105 #define FLT_MIN 1.17549435E-38F 106 #endif 107 108 #endif /* _MACHINE_LIMITS_H_ */ 109