limits.h revision 1.4
1 1.4 perry /* $NetBSD: limits.h,v 1.4 1998/01/09 22:23:44 perry Exp $ */ 2 1.1 cgd 3 1.1 cgd /* 4 1.1 cgd * Copyright (c) 1988, 1993 5 1.1 cgd * The Regents of the University of California. All rights reserved. 6 1.1 cgd * 7 1.1 cgd * Redistribution and use in source and binary forms, with or without 8 1.1 cgd * modification, are permitted provided that the following conditions 9 1.1 cgd * are met: 10 1.1 cgd * 1. Redistributions of source code must retain the above copyright 11 1.1 cgd * notice, this list of conditions and the following disclaimer. 12 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright 13 1.1 cgd * notice, this list of conditions and the following disclaimer in the 14 1.1 cgd * documentation and/or other materials provided with the distribution. 15 1.1 cgd * 3. All advertising materials mentioning features or use of this software 16 1.1 cgd * must display the following acknowledgement: 17 1.1 cgd * This product includes software developed by the University of 18 1.1 cgd * California, Berkeley and its contributors. 19 1.1 cgd * 4. Neither the name of the University nor the names of its contributors 20 1.1 cgd * may be used to endorse or promote products derived from this software 21 1.1 cgd * without specific prior written permission. 22 1.1 cgd * 23 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 1.1 cgd * SUCH DAMAGE. 34 1.1 cgd * 35 1.1 cgd * @(#)limits.h 8.3 (Berkeley) 1/4/94 36 1.1 cgd */ 37 1.1 cgd 38 1.4 perry #ifndef _MACHINE_LIMITS_H_ 39 1.4 perry #define _MACHINE_LIMITS_H_ 40 1.4 perry 41 1.1 cgd #define CHAR_BIT 8 /* number of bits in a char */ 42 1.1 cgd #define MB_LEN_MAX 6 /* Allow 31 bit UTF2 */ 43 1.1 cgd 44 1.1 cgd /* 45 1.1 cgd * According to ANSI (section 2.2.4.2), the values below must be usable by 46 1.1 cgd * #if preprocessing directives. Additionally, the expression must have the 47 1.1 cgd * same type as would an expression that is an object of the corresponding 48 1.1 cgd * type converted according to the integral promotions. The subtraction for 49 1.1 cgd * INT_MIN and LONG_MIN is so the value is not unsigned; 2147483648 is an 50 1.1 cgd * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2). 51 1.1 cgd * These numbers work for pcc as well. The UINT_MAX and ULONG_MAX values 52 1.1 cgd * are written as hex so that GCC will be quiet about large integer constants. 53 1.1 cgd */ 54 1.2 cgd #define SCHAR_MAX 0x7f /* max value for a signed char */ 55 1.2 cgd #define SCHAR_MIN (-0x7f-1) /* min value for a signed char */ 56 1.1 cgd 57 1.2 cgd #define UCHAR_MAX 0xffU /* max value for an unsigned char */ 58 1.2 cgd #define CHAR_MAX 0x7f /* max value for a char */ 59 1.2 cgd #define CHAR_MIN (-0x7f-1) /* min value for a char */ 60 1.2 cgd 61 1.2 cgd #define USHRT_MAX 0xffffU /* max value for an unsigned short */ 62 1.2 cgd #define SHRT_MAX 0x7fff /* max value for a short */ 63 1.2 cgd #define SHRT_MIN (-0x7fff-1) /* min value for a short */ 64 1.2 cgd 65 1.2 cgd #define UINT_MAX 0xffffffffU /* max value for an unsigned int */ 66 1.2 cgd #define INT_MAX 0x7fffffff /* max value for an int */ 67 1.2 cgd #define INT_MIN (-0x7fffffff-1) /* min value for an int */ 68 1.2 cgd 69 1.2 cgd #define ULONG_MAX 0xffffffffffffffffUL /* max for an unsigned long */ 70 1.2 cgd #define LONG_MAX 0x7fffffffffffffffL /* max for a long */ 71 1.2 cgd #define LONG_MIN (-0x7fffffffffffffffL-1) /* min for a long */ 72 1.1 cgd 73 1.1 cgd #if !defined(_ANSI_SOURCE) 74 1.2 cgd #define SSIZE_MAX LONG_MAX /* max value for a ssize_t */ 75 1.1 cgd 76 1.2 cgd #if !defined(_POSIX_SOURCE) && !defined(_XOPEN_SOURCE) 77 1.2 cgd #define SIZE_T_MAX ULONG_MAX /* max value for a size_t */ 78 1.1 cgd 79 1.2 cgd /* Quads and longs are the same on the alpha */ 80 1.2 cgd #define UQUAD_MAX (ULONG_MAX) /* max value for a uquad_t */ 81 1.2 cgd #define QUAD_MAX (LONG_MAX) /* max value for a quad_t */ 82 1.2 cgd #define QUAD_MIN (LONG_MIN) /* min value for a quad_t */ 83 1.1 cgd 84 1.2 cgd #endif /* !_POSIX_SOURCE && !_XOPEN_SOURCE */ 85 1.1 cgd #endif /* !_ANSI_SOURCE */ 86 1.2 cgd 87 1.2 cgd #if (!defined(_ANSI_SOURCE)&&!defined(_POSIX_SOURCE)) || defined(_XOPEN_SOURCE) 88 1.2 cgd #define LONG_BIT 64 89 1.2 cgd #define WORD_BIT 32 90 1.2 cgd 91 1.2 cgd #define DBL_DIG 15 92 1.2 cgd #define DBL_MAX 1.7976931348623157E+308 93 1.2 cgd #define DBL_MIN 2.2250738585072014E-308 94 1.2 cgd 95 1.2 cgd #define FLT_DIG 6 96 1.2 cgd #define FLT_MAX 3.40282347E+38F 97 1.2 cgd #define FLT_MIN 1.17549435E-38F 98 1.2 cgd #endif 99 1.4 perry 100 1.4 perry #endif /* _MACHINE_LIMITS_H_ */ 101
Indexes created Fri Sep 26 20:09:58 GMT 2025