/usr/include/xorg/micoord.h is in xserver-xorg-dev 2:1.15.1-0ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* 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:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* XFREE86 PROJECT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of the XFree86 Project 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.
*
*/
#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(sparc) || defined(__sparc64__) || \
defined(__alpha) || defined(__alpha__) || \
defined(__i386__) || defined(__i386) || defined(__ia64__) || \
defined(__s390x__) || defined(__s390__) || \
defined(__amd64__) || 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_ */
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