9f0ddc464e
<stdint.h>. Previously, parts were defined in <machine/ansi.h> and
<machine/limits.h>. This resulted in two problems:
(1) Defining macros in <machine/ansi.h> gets in the way of that
header only defining types.
(2) Defining C99 limits in <machine/limits.h> adds pollution to
<limits.h>.
107 lines
4.6 KiB
C
107 lines
4.6 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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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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#define CHAR_BIT 8 /* number of bits in a char */
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#define MB_LEN_MAX 6 /* Allow 31 bit UTF2 */
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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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* These numbers are for the default configuration of gcc. They work for
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* some other compilers as well, but this should not be depended on.
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*/
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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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#ifdef __CHAR_UNSIGNED__
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#define CHAR_MAX UCHAR_MAX /* max value for a char */
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#define CHAR_MIN 0 /* min value for a char */
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#else
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#define CHAR_MAX SCHAR_MAX /* max value for a char */
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#define CHAR_MIN SCHAR_MIN /* min value for a char */
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#endif
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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 0xffffffffU /* 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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/* Bad hack for gcc configured to give 64-bit longs. */
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#ifdef _LARGE_LONG
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#define ULONG_MAX 0xffffffffffffffffUL
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#define LONG_MAX 0x7fffffffffffffffL
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#define LONG_MIN (-0x7fffffffffffffffL - 1)
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#else
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#define ULONG_MAX 0xffffffffUL /* max value for an unsigned long */
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#define LONG_MAX 0x7fffffffL /* max value for a long */
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#define LONG_MIN (-0x7fffffffL - 1) /* min value for a long */
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#endif
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/* max value for an unsigned long long */
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#define ULLONG_MAX 0xffffffffffffffffULL
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#define LLONG_MAX 0x7fffffffffffffffLL /* max value for a long long */
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#define LLONG_MIN (-0x7fffffffffffffffLL - 1) /* min for a long long */
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#if !defined(_ANSI_SOURCE)
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#define SSIZE_MAX INT_MAX /* max value for a ssize_t */
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#if !defined(_POSIX_SOURCE)
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#define SIZE_T_MAX UINT_MAX /* max value for a size_t */
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#define OFF_MAX LLONG_MAX /* max value for a off_t */
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#define OFF_MIN LLONG_MIN /* min value for a off_t */
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/* Quads and long longs are the same size. Ensure they stay in sync. */
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#define UQUAD_MAX ULLONG_MAX /* max value for a uquad_t */
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#define QUAD_MAX LLONG_MAX /* max value for a quad_t */
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#define QUAD_MIN LLONG_MIN /* min value for a quad_t */
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#endif /* !_POSIX_SOURCE */
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#endif /* !_ANSI_SOURCE */
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#endif /* !_MACHINE_LIMITS_H_ */
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