23static struct state *st = &state;
50 st->M = s * a * a * M_PI * (1 - e2) / st->E;
69 return (st->M * (
x / (1.0 -
x *
x) + 0.5 * log((1.0 +
x) / (1.0 -
x))));
double G_darea0_on_ellipsoid(double lat)
Calculate integral for area between two latitudes.
double G_area_for_zone_on_ellipsoid(double north, double south)
Calculates area between latitudes.
void G_begin_zone_area_on_ellipsoid(double a, double e2, double s)
Begin area calculations for ellipsoid.