/************************************************************************
 * This program is free software; you can redistribute it and/or modify *
 * it under the terms of the GNU General Public License as published by *
 * the Free Software Foundation; either version 2 of the License, or    *
 * (at your option) any later version.                                  *
 ************************************************************************/

#define FIXSHIFT	16
#define	FIXONE		(1l << FIXSHIFT)

#define SGN(x) 		((x)>0?1:-1)
#define ABS(x) 		((int)(x)>0?(x):-(x))
#define LABS(x) 	((long)(x)>0?(x):-(x))

#define	fixed	long

extern long lshr6(long);
extern long lshl6(long);
extern long lshr8(long);
extern long lshl8(long);
extern int  lshr16(fixed);
extern fixed lshl16(int);

extern fixed fixmul(fixed,fixed);
extern fixed fixdiv(fixed,fixed);
extern fixed fixdiv64(fixed a_l,fixed a_h, fixed b);
extern fixed fixdiv64shl16(fixed a, fixed b);
extern fixed fixmuldiv64(fixed a, fixed b, fixed c);
extern fixed fixsqrt(fixed a);
extern fixed fixdist(fixed dx, fixed dy);
extern int intdist(int dex, int dey);