/* $XFree86: xc/programs/Xserver/mi/micoord.h,v 1.8 2004/02/13 23:58:52 dawes Exp $ */ /* * Copyright (C) 2000 The XFree86 Project, Inc. * All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject * to the following conditions: * * 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, and in the same place and form as other copyright, * license and disclaimer information. * * 3. The end-user documentation included with the redistribution, * if any, must include the following acknowledgment: "This product * includes software developed by The XFree86 Project, Inc * (http://www.xfree86.org/) and its contributors", in the same * place and form as other third-party acknowledgments. Alternately, * this acknowledgment may appear in the software itself, in the * same form and location as other such third-party acknowledgments. * * 4. Except as contained in this notice, the name of The XFree86 * Project, Inc shall not be used in advertising or otherwise to * promote the sale, use or other dealings in this Software without * prior written authorization from The XFree86 Project, Inc. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 XFREE86 PROJECT, INC OR ITS 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. */ #ifndef _MICOORD_H_ #define _MICOORD_H_ 1 #include "servermd.h" /* Macros which handle a coordinate in a single register */ /* * Most compilers will convert divisions by 65536 into shifts, if signed * shifts exist. If your machine does arithmetic shifts and your compiler * can't get it right, add to this line. */ /* * mips compiler - what a joke - it CSEs the 65536 constant into a reg * forcing as to use div instead of shift. Let's be explicit. */ #if defined(mips) || defined(sgi) || \ defined(sparc) || defined(__sparc64__) || \ defined(__alpha) || defined(__alpha__) || \ defined(__i386__) || defined(i386) || \ defined(__ia64__) || defined(ia64) || \ defined(__s390x__) || defined(__s390__) || \ defined(__AMD64__) || defined(AMD64) #define GetHighWord(x) (((int) (x)) >> 16) #else #define GetHighWord(x) (((int) (x)) / 65536) #endif #if IMAGE_BYTE_ORDER == MSBFirst #define intToCoord(i,x,y) (((x) = GetHighWord(i)), ((y) = (int) ((short) (i)))) #define coordToInt(x,y) (((x) << 16) | ((y) & 0xffff)) #define intToX(i) (GetHighWord(i)) #define intToY(i) ((int) ((short) i)) #else #define intToCoord(i,x,y) (((x) = (int) ((short) (i))), ((y) = GetHighWord(i))) #define coordToInt(x,y) (((y) << 16) | ((x) & 0xffff)) #define intToX(i) ((int) ((short) (i))) #define intToY(i) (GetHighWord(i)) #endif #endif /* _MICOORD_H_ */