FreeBSD/Linux Kernel Cross Reference
sys/i386/include/ansi.h

     /*-
      * Copyright (c) 1990, 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.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the University of
     *      California, Berkeley and its contributors.
     * 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.
     *
     *      @(#)ansi.h      8.2 (Berkeley) 1/4/94
     * $FreeBSD$
     */
    
    #ifndef _MACHINE_ANSI_H_
    #define _MACHINE_ANSI_H_
    
    /*
     * Types which are fundamental to the implementation and must be declared
     * in more than one standard header are defined here.  Standard headers
     * then use:
     *      #ifdef  _BSD_SIZE_T_
     *      typedef _BSD_SIZE_T_ size_t;
     *      #undef  _BSD_SIZE_T_
     *      #endif
     */
    #define _BSD_CLOCK_T_   unsigned long           /* clock()... */
    #define _BSD_CLOCKID_T_ int                     /* clock_gettime()... */
    #define _BSD_PTRDIFF_T_ int                     /* ptr1 - ptr2 */
    #define _BSD_RUNE_T_    _BSD_CT_RUNE_T_         /* rune_t (see below) */
    #define _BSD_SIZE_T_    unsigned int            /* sizeof() */
    #define _BSD_SSIZE_T_   int                     /* byte count or error */
    #define _BSD_TIME_T_    long                    /* time()... */
    #define _BSD_TIMER_T_   int                     /* timer_gettime()... */
    #define _BSD_WCHAR_T_   _BSD_CT_RUNE_T_         /* wchar_t (see below) */
    
    /*
     * Types which are fundamental to the implementation and must be used
     * in more than one standard header although they are only declared in
     * one (perhaps nonstandard) header are defined here.  Standard headers
     * use _BSD_XXX_T_ without undef'ing it.
     */
    #define _BSD_CT_RUNE_T_ int                     /* arg type for ctype funcs */
    #define _BSD_OFF_T_     __int64_t               /* file offset */
    #define _BSD_PID_T_     int                     /* process [group] */
    #define _BSD_VA_LIST_   char *                  /* va_list */
    
    /*
     * The rune type is declared to be an ``int'' instead of the more natural
     * ``unsigned long'' or ``long''.  Two things are happening here.  It is not
     * unsigned so that EOF (-1) can be naturally assigned to it and used.  Also,
     * it looks like 10646 will be a 31 bit standard.  This means that if your
     * ints cannot hold 32 bits, you will be in trouble.  The reason an int was
     * chosen over a long is that the is*() and to*() routines take ints (says
     * ANSI C), but they use _BSD_CT_RUNE_T_ instead of int.  By changing it
     * here, you lose a bit of ANSI conformance, but your programs will still
     * work.
     */
    
    /*
     * Frequencies of the clock ticks reported by clock() and times().  They
     * are the same as stathz for bogus historical reasons.  They should be
     * 1e6 because clock() and times() are implemented using getrusage() and
     * there is no good reason why they should be less accurate.  There is
     * the bad reason that (broken) programs might not like clock_t or
     * CLOCKS_PER_SEC being ``double'' (``unsigned long'' is not large enough
     * to hold the required 24 hours worth of ticks if the frequency is
     * 1000000ul, and ``unsigned long long'' would be nonstandard).
     */
    #define _BSD_CLK_TCK_           128
    #define _BSD_CLOCKS_PER_SEC_    128
    
    /*
     * Typedefs for especially magic types.  #define's wouldn't work in the
     * __GNUC__ case, since __attribute__(()) only works in certain contexts.
     * This is not in <machine/types.h>, since that has too much namespace
     * pollution for inclusion in ANSI headers, yet we need __int64_t in at
    * least <stdio.h>.
    */
   #ifdef __GNUC__
   typedef int __attribute__((__mode__(__DI__)))            __int64_t;
   typedef unsigned int __attribute__((__mode__(__DI__)))  __uint64_t;
   #else
   typedef long long                                        __int64_t;
   typedef unsigned long long                              __uint64_t;
   #endif
   /*
    * Internal names for basic integral types.  Omit the typedef if
    * not possible for a machine/compiler combination.
    */
   typedef __signed char              __int8_t;
   typedef unsigned char             __uint8_t;
   typedef short                     __int16_t;
   typedef unsigned short           __uint16_t;
   typedef int                       __int32_t;
   typedef unsigned int             __uint32_t;
   
   typedef int                      __intptr_t;
   typedef unsigned int            __uintptr_t;
   
   #endif /* !_MACHINE_ANSI_H_ */

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