/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 *
 *	@(#)pow_zz.c	5.1	6/7/85
 */

#include "complex"

pow_zz(r,a,b)
dcomplex *r, *a, *b;
{
double logr, logi, x, y;
double log(), exp(), cos(), sin(), atan2(), cabs();

logr = log( cabs(a->dreal, a->dimag) );
logi = atan2(a->dimag, a->dreal);

x = exp( logr * b->dreal - logi * b->dimag );
y = logr * b->dimag + logi * b->dreal;

r->dreal = x * cos(y);
r->dimag = x * sin(y);
}