/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/ati/atiutil.h,v 1.8 2003/01/01 19:16:34 tsi Exp $ *//* * Copyright 1997 through 2004 by Marc Aurele La France (TSI @ UQV), tsi@xfree86.org * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that * the above copyright notice appear in all copies and that both that copyright * notice and this permission notice appear in supporting documentation, and * that the name of Marc Aurele La France not be used in advertising or * publicity pertaining to distribution of the software without specific, * written prior permission.  Marc Aurele La France makes no representations * about the suitability of this software for any purpose.  It is provided * "as-is" without express or implied warranty. * * MARC AURELE LA FRANCE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO * EVENT SHALL MARC AURELE LA FRANCE BE LIABLE FOR ANY SPECIAL, INDIRECT OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR * PERFORMANCE OF THIS SOFTWARE. */#ifndef ___ATIUTIL_H___#define ___ATIUTIL_H___ 1/* * Prevent the C standard's insistence on unsigned long sizeof's from causing * counter-intuitive results. */#define SizeOf(_object) ((int)sizeof(_object))#define NumberOf(_what) (SizeOf(_what) / SizeOf(_what[0]))#define __ONE_MICROSECOND__ 100         /* This'll need calibration */#define ATIDelay(_microseconds)                            \    {                                                      \        unsigned int _i, _j;                               \        for (_i = 0;  _i < _microseconds;  _i++)           \            for (_j = 0;  _j < __ONE_MICROSECOND__;  _j++) \                /* Nothing */;                             \    }/* * Macros to get/set a contiguous bit field.  Arguments should not be * self-modifying. */#define UnitOf(___Value)                                \        (((((___Value) ^ ((___Value) - 1)) + 1) >> 1) | \         ((((___Value) ^ ((___Value) - 1)) >> 1) + 1))#define GetBits(__Value, _Mask) (((__Value) & (_Mask)) / UnitOf(_Mask))#define SetBits(__Value, _Mask) (((__Value) * UnitOf(_Mask)) & (_Mask))#define MaxBits(__Mask)         GetBits(__Mask, __Mask)#define _ByteMask(__Byte)       ((CARD8)(-1) << (8 * (__Byte)))#define GetByte(_Value, _Byte)  GetBits(_Value, _ByteMask(_Byte))#define SetByte(_Value, _Byte)  SetBits(_Value, _ByteMask(_Byte))#define _WordMask(__Word)       ((CARD16)(-1) << (16 * (__Word)))#define GetWord(_Value, _Word)  GetBits(_Value, _WordMask(_Word))#define SetWord(_Value, _Word)  SetBits(_Value, _WordMask(_Word))extern void ATIReduceRatio(int *, int *);extern int  ATIDivide(int, int, int, const int);#endif /* ___ATIUTIL_H___ */