/*  * 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 <u.h>#include <libc.h>#include "map.h" voidccubrt(double zr, double zi, double *wr, double *wi){	double r, theta;	theta = atan2(zi,zr);	r = cubrt(hypot(zr,zi));	*wr = r*cos(theta/3);	*wi = r*sin(theta/3);}