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- /***********************************************************
- Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts,
- and the Massachusetts Institute of Technology, Cambridge, Massachusetts.
-
- All Rights Reserved
-
- Permission to use, copy, modify, and distribute this software and its
- documentation for any purpose and without fee is hereby granted,
- 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 names of Digital or MIT not be
- used in advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
- ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
- DIGITAL 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.
-
- ******************************************************************/
- /* $XConsortium: misc.h,v 1.58 91/04/10 08:53:39 rws Exp $ */
- #ifndef MISC_H
- #define MISC_H 1
- /*
- * X internal definitions
- *
- */
-
-
- extern unsigned long globalSerialNumber;
- extern unsigned long serverGeneration;
-
- #include <X11/Xosdefs.h>
-
- #ifndef NULL
- #ifndef X_NOT_STDC_ENV
- #include <stddef.h>
- #else
- #define NULL 0
- #endif
- #endif
-
- #define MAXSCREENS 3
- #define MAXCLIENTS 128
- #define MAXFORMATS 8
- #define MAXVISUALS_PER_SCREEN 50
-
- typedef unsigned char *pointer;
- typedef int Bool;
- typedef unsigned long PIXEL;
- typedef unsigned long ATOM;
-
-
- #ifndef TRUE
- #define TRUE 1
- #define FALSE 0
- #endif
- #include "os.h" /* for ALLOCATE_LOCAL and DEALLOCATE_LOCAL */
- #include <X11/Xfuncs.h> /* for bcopy, bzero, and bcmp */
-
- #define NullBox ((BoxPtr)0)
- #define MILLI_PER_MIN (1000 * 60)
- #define MILLI_PER_SECOND (1000)
-
- /* this next is used with None and ParentRelative to tell
- PaintWin() what to use to paint the background. Also used
- in the macro IS_VALID_PIXMAP */
-
- #define USE_BACKGROUND_PIXEL 3
- #define USE_BORDER_PIXEL 3
-
-
- /* byte swap a long literal */
- #define lswapl(x) ((((x) & 0xff) << 24) |\
- (((x) & 0xff00) << 8) |\
- (((x) & 0xff0000) >> 8) |\
- (((x) >> 24) & 0xff))
-
- /* byte swap a short literal */
- #define lswaps(x) ((((x) & 0xff) << 8) | (((x) >> 8) & 0xff))
-
- #define min(a, b) (((a) < (b)) ? (a) : (b))
- #define max(a, b) (((a) > (b)) ? (a) : (b))
- #ifndef abs
- #define abs(a) ((a) > 0 ? (a) : -(a))
- #endif
- #ifndef fabs
- #define fabs(a) ((a) > 0.0 ? (a) : -(a)) /* floating absolute value */
- #endif
- #define sign(x) ((x) < 0 ? -1 : ((x) > 0 ? 1 : 0))
- /* this assumes b > 0 */
- #define modulus(a, b, d) if (((d) = (a) % (b)) < 0) (d) += (b)
- /*
- * return the least significant bit in x which is set
- *
- * This works on 1's complement and 2's complement machines.
- * If you care about the extra instruction on 2's complement
- * machines, change to ((x) & (-(x)))
- */
- #define lowbit(x) ((x) & (~(x) + 1))
-
- #define MAXSHORT 32767
- #define MINSHORT -MAXSHORT
-
-
- /* some macros to help swap requests, replies, and events */
-
- #define LengthRestB(stuff) \
- (((unsigned long)stuff->length << 2) - sizeof(*stuff))
-
- #define LengthRestS(stuff) \
- (((unsigned long)stuff->length << 1) - (sizeof(*stuff) >> 1))
-
- #define LengthRestL(stuff) \
- ((unsigned long)stuff->length - (sizeof(*stuff) >> 2))
-
- #define SwapRestS(stuff) \
- SwapShorts((short *)(stuff + 1), LengthRestS(stuff))
-
- #define SwapRestL(stuff) \
- SwapLongs((long *)(stuff + 1), LengthRestL(stuff))
-
- /* byte swap a long */
- #define swapl(x, n) n = ((char *) (x))[0];\
- ((char *) (x))[0] = ((char *) (x))[3];\
- ((char *) (x))[3] = n;\
- n = ((char *) (x))[1];\
- ((char *) (x))[1] = ((char *) (x))[2];\
- ((char *) (x))[2] = n;
-
- /* byte swap a short */
- #define swaps(x, n) n = ((char *) (x))[0];\
- ((char *) (x))[0] = ((char *) (x))[1];\
- ((char *) (x))[1] = n
-
- /* copy long from src to dst byteswapping on the way */
- #define cpswapl(src, dst) \
- ((char *)&(dst))[0] = ((char *) &(src))[3];\
- ((char *)&(dst))[1] = ((char *) &(src))[2];\
- ((char *)&(dst))[2] = ((char *) &(src))[1];\
- ((char *)&(dst))[3] = ((char *) &(src))[0];
-
- /* copy short from src to dst byteswapping on the way */
- #define cpswaps(src, dst)\
- ((char *) &(dst))[0] = ((char *) &(src))[1];\
- ((char *) &(dst))[1] = ((char *) &(src))[0];
-
- extern void SwapLongs();
- extern void SwapShorts();
-
- typedef struct _DDXPoint *DDXPointPtr;
- typedef struct _Box *BoxPtr;
-
- #endif /* MISC_H */
-