61 #define	abs(n)	((n) >= 0 ? (n) : -(n))  macro
87 		numdots = abs (yd);
99 		numdots = abs (xd);
109 	if (abs (xd) > abs (yd)) {
111 		numdots = abs (xd);
120 		numdots = abs (yd);
336 			Xs = abs(ys);  in conicarc()
337 			Ys = abs(xs);  in conicarc()
346 			Xs = abs(xs);  in conicarc()
347 			Ys = abs(ys);  in conicarc()
357 		Xs = abs(xs);  in conicarc()
358 		Ys = abs(ys);  in conicarc()
367 		Xs = abs(ys);  in conicarc()
368 		Ys = abs(xs);  in conicarc()
383 			Xt = abs(yt);  in conicarc()
384 			Yt = abs(xt);  in conicarc()
387 			Xt = abs(xt);  in conicarc()
388 			Yt = abs(yt);  in conicarc()
392 		Xt = abs(xt);  in conicarc()
393 		Yt = abs(yt);  in conicarc()
396 		Xt = abs(yt);  in conicarc()
397 		Yt = abs(xt);  in conicarc()