#include <u.h>#include <libc.h>#include "map.h" static double a; static intXcylequalarea(struct place *place, double *x, double *y){	*x = - place->wlon.l * a;	*y = place->nlat.s;	return(1);} projcylequalarea(double par){	struct coord stdp0;	if(par > 89.0)		return(0);	deg2rad(par, &stdp0);	a = stdp0.c*stdp0.c;	return(Xcylequalarea);}