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Lines Matching defs:ydiff

480 	int	xdiff, ydiff;
489 	ydiff = sp->beacon[bn].y - p.ypos;
490 	ydiff = SGN(ydiff);
491 	if (xdiff != displacement[p.dir].dx || ydiff != displacement[p.dir].dy)
500 			ydiff = sp->beacon[dest_no].y - sp->beacon[bn].y;
504 			ydiff = sp->exit[dest_no].y - sp->beacon[bn].y;
508 			ydiff = sp->airport[dest_no].y - sp->beacon[bn].y;
513 		if (xdiff == 0 && ydiff == 0)
515 		p.new_dir = DIR_FROM_DXDY(xdiff, ydiff);