9858863cd4
On some architectures UCHAR_MAX and USHRT_MAX had type unsigned int. However, lacking integer suffixes for types smaller than int, their type should correspond to that of an object of type unsigned char (or short) when used in an expression with objects of type int. In that case unsigned char (short) are promoted to int (i.e. signed) so the type of UCHAR_MAX and USHRT_MAX should also be int. Where MIN/MAX constants implicitly have the correct type the suffix has been removed. While here, correct some comments. Reviewed by: bde Approved by: kib (mentor)
86 lines
3.6 KiB
C
86 lines
3.6 KiB
C
/*-
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)limits.h 8.3 (Berkeley) 1/4/94
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* $FreeBSD$
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*/
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#ifndef _MACHINE__LIMITS_H_
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#define _MACHINE__LIMITS_H_
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/*
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* According to ANSI (section 2.2.4.2), the values below must be usable by
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* #if preprocessing directives. Additionally, the expression must have the
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* same type as would an expression that is an object of the corresponding
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* type converted according to the integral promotions. The subtraction for
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* INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an
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* unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2).
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*/
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#define __CHAR_BIT 8 /* number of bits in a char */
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#define __SCHAR_MAX 0x7f /* max value for a signed char */
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#define __SCHAR_MIN (-0x7f-1) /* min value for a signed char */
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#define __UCHAR_MAX 0xff /* max value for an unsigned char */
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#define __USHRT_MAX 0xffff /* max value for an unsigned short */
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#define __SHRT_MAX 0x7fff /* max value for a short */
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#define __SHRT_MIN (-0x7fff-1) /* min value for a short */
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#define __UINT_MAX 0xffffffff /* max value for an unsigned int */
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#define __INT_MAX 0x7fffffff /* max value for an int */
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#define __INT_MIN (-0x7fffffff-1) /* min value for an int */
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#define __ULONG_MAX 0xffffffffffffffff /* max for an unsigned long */
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#define __LONG_MAX 0x7fffffffffffffff /* max for a long */
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#define __LONG_MIN (-0x7fffffffffffffff-1) /* min for a long */
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/* Long longs have the same size but not the same type as longs. */
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/* max for an unsigned long long */
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#define __ULLONG_MAX 0xffffffffffffffffULL
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#define __LLONG_MAX 0x7fffffffffffffffLL /* max for a long long */
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#define __LLONG_MIN (-0x7fffffffffffffffLL-1) /* min for a long long */
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#define __SSIZE_MAX __LONG_MAX /* max value for a ssize_t */
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#define __SIZE_T_MAX __ULONG_MAX /* max value for a size_t */
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#define __OFF_MAX __LONG_MAX /* max value for an off_t */
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#define __OFF_MIN __LONG_MIN /* min value for an off_t */
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/* Quads and longs are the same size. Ensure they stay in sync. */
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#define __UQUAD_MAX (__ULONG_MAX) /* max value for a uquad_t */
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#define __QUAD_MAX (__LONG_MAX) /* max value for a quad_t */
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#define __QUAD_MIN (__LONG_MIN) /* min value for a quad_t */
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#define __LONG_BIT 64
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#define __WORD_BIT 32
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/* Minimum signal stack size. */
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#define __MINSIGSTKSZ (1024 * 4)
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#endif /* !_MACHINE__LIMITS_H_ */
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