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limits.h revision 1.12 
      1 /*	$NetBSD: limits.h,v 1.12 2003/04/28 23:16:25 bjh21 Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988 The Regents of the University of California.
      5  * 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    7.2 (Berkeley) 6/28/90
     36  */
     37 
     38 #ifndef	_MACHINE_LIMITS_H_
     39 #define	_MACHINE_LIMITS_H_
     40 
     41 #include <sys/featuretest.h>
     42 
     43 #define CHAR_BIT        8               /* number of bits in a char */
     44 #define MB_LEN_MAX      32              /* no multibyte characters */
     45 
     46 #define SCHAR_MAX       0x7f            /* max value for a signed char */
     47 #define SCHAR_MIN       (-0x7f-1)       /* min value for a signed char */
     48 
     49 #define UCHAR_MAX       0xffU           /* max value for an unsigned char */
     50 #define CHAR_MAX        0x7f            /* max value for a char */
     51 #define CHAR_MIN        (-0x7f-1)       /* min value for a char */
     52 
     53 #define USHRT_MAX       0xffffU         /* max value for an unsigned short */
     54 #define SHRT_MAX        0x7fff          /* max value for a short */
     55 #define SHRT_MIN        (-0x7fff-1)     /* min value for a short */
     56 
     57 #define UINT_MAX        0xffffffffU     /* max value for an unsigned int */
     58 #define INT_MAX         0x7fffffff      /* max value for an int */
     59 #define INT_MIN         (-0x7fffffff-1) /* min value for an int */
     60 
     61 #define ULONG_MAX       0xffffffffUL    /* max value for an unsigned long */
     62 #define LONG_MAX        0x7fffffffL     /* max value for a long */
     63 #define LONG_MIN        (-0x7fffffffL-1)/* min value for a long */
     64 
     65 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
     66     defined(_NETBSD_SOURCE)
     67 #ifdef __ELF__
     68 #define SSIZE_MAX       LONG_MAX        /* max value for a ssize_t */
     69 #else
     70 #define SSIZE_MAX       INT_MAX         /* max value for a ssize_t */
     71 #endif
     72 
     73 #if defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L || \
     74     defined(_NETBSD_SOURCE)
     75 #define	ULLONG_MAX	0xffffffffffffffffULL	/* max unsigned long long */
     76 #define	LLONG_MAX	0x7fffffffffffffffLL	/* max signed long long */
     77 #define	LLONG_MIN	(-0x7fffffffffffffffLL-1) /* min signed long long */
     78 #endif
     79 
     80 #if defined(_NETBSD_SOURCE)
     81 #ifdef __ELF__
     82 #define SIZE_T_MAX      ULONG_MAX       /* max value for a size_t */
     83 #else
     84 #define SIZE_T_MAX      UINT_MAX        /* max value for a size_t */
     85 #endif
     86 
     87 #define UQUAD_MAX       0xffffffffffffffffULL           /* max unsigned quad */
     88 #define QUAD_MAX        0x7fffffffffffffffLL            /* max signed quad */
     89 #define QUAD_MIN        (-0x7fffffffffffffffLL-1)       /* min signed quad */
     90 
     91 #endif /* _NETBSD_SOURCE */
     92 #endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */
     93 
     94 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
     95 #define LONG_BIT	32
     96 #define WORD_BIT	32
     97 
     98 #define DBL_DIG         16
     99 #define DBL_MAX         1.701411834604692294E+38
    100 #define DBL_MIN         2.938735877055718770E-39
    101 
    102 #define FLT_DIG         6
    103 #define FLT_MAX         1.70141173E+38F
    104 #define FLT_MIN         2.93873588E-39F
    105 #endif
    106 
    107 #endif /* _MACHINE_LIMITS_H_ */
    108