FreeBSD/Linux Kernel Cross Reference
sys/amd64/include/_limits.h

     /*-
      * Copyright (c) 1988, 1993
      *      The Regents of the University of California.  All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 4. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      @(#)limits.h    8.3 (Berkeley) 1/4/94
     * $FreeBSD$
     */
    
    #ifndef _MACHINE__LIMITS_H_
    #define _MACHINE__LIMITS_H_
    
    /*
     * According to ANSI (section 2.2.4.2), the values below must be usable by
     * #if preprocessing directives.  Additionally, the expression must have the
     * same type as would an expression that is an object of the corresponding
     * type converted according to the integral promotions.  The subtraction for
     * INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an
     * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2).
     * These numbers are for the default configuration of gcc.  They work for
     * some other compilers as well, but this should not be depended on.
     */
    
    #define __CHAR_BIT      8               /* number of bits in a char */
    
    #define __SCHAR_MAX     0x7f            /* max value for a signed char */
    #define __SCHAR_MIN     (-0x7f - 1)     /* min value for a signed char */
    
    #define __UCHAR_MAX     0xffU           /* max value for an unsigned char */
    
    #define __USHRT_MAX     0xffffU         /* max value for an unsigned short */
    #define __SHRT_MAX      0x7fff          /* max value for a short */
    #define __SHRT_MIN      (-0x7fff - 1)   /* min value for a short */
    
    #define __UINT_MAX      0xffffffffU     /* max value for an unsigned int */
    #define __INT_MAX       0x7fffffff      /* max value for an int */
    #define __INT_MIN       (-0x7fffffff - 1)       /* min value for an int */
    
    #define __ULONG_MAX     0xffffffffffffffffUL    /* max for an unsigned long */
    #define __LONG_MAX      0x7fffffffffffffffL     /* max for a long */
    #define __LONG_MIN      (-0x7fffffffffffffffL - 1) /* min for a long */
    
                            /* max value for an unsigned long long */
    #define __ULLONG_MAX    0xffffffffffffffffULL
    #define __LLONG_MAX     0x7fffffffffffffffLL    /* max value for a long long */
    #define __LLONG_MIN     (-0x7fffffffffffffffLL - 1)  /* min for a long long */
    
    #define __SSIZE_MAX     __LONG_MAX      /* max value for a ssize_t */
    
    #define __SIZE_T_MAX    __ULONG_MAX     /* max value for a size_t */
    
    #define __OFF_MAX       __LONG_MAX      /* max value for an off_t */
    #define __OFF_MIN       __LONG_MIN      /* min value for an off_t */
    
    /* Quads and longs are the same on the amd64.  Ensure they stay in sync. */
    #define __UQUAD_MAX     __ULONG_MAX     /* max value for a uquad_t */
    #define __QUAD_MAX      __LONG_MAX      /* max value for a quad_t */
    #define __QUAD_MIN      __LONG_MIN      /* min value for a quad_t */
    
    #define __LONG_BIT      64
    #define __WORD_BIT      32
    
    /*
     * Minimum signal stack size. The current signal frame
     * for i386 is 408 bytes large.
     */
    #define __MINSIGSTKSZ   (512 * 4)
    
    #endif /* !_MACHINE__LIMITS_H_ */

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