text: #include <u.h>
  #include <libc.h>
  #include "map.h"
  
  int
  Xcylindrical(struct place *place, double *x, double *y)
  {
  	if(fabs(place->nlat.l) > 80.*RAD)
  		return(-1);
  	*x = - place->wlon.l;
  	*y = place->nlat.s / place->nlat.c;
  	return(1);
  }
  
  proj
  cylindrical(void)
  {
  	return(Xcylindrical);
  }
  