#include "map.h" Xcylindrical(place, x, y) struct place *place; float *x, *y; { if(fabs(place->nlat.l) > 80.*RAD) return(-1); *x = - place->wlon.l; *y = place->nlat.s / place->nlat.c; return(1); } int (*cylindrical())() { return(Xcylindrical); }