/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include "mplot.h"void circ(double xc, double yc, double r){	Point p;	int rad;	p.x=SCX(xc);	p.y=SCY(yc);	if (r < 0) 		rad=SCR(-r);	else		rad=SCR(r);	ellipse(screen, p, rad, rad, 0, getcolor(e1->foregr), ZP);}