Function gaiaIsRing_r

pub unsafe extern "C" fn gaiaIsRing_r(
    p_cache: *const c_void,
    line: gaiaLinestringPtr,
) -> c_int

Checks if a Linestring object represents an OGC Ring Geometry

\param p_cache a memory pointer returned by spatialite_alloc_connection() \param line pointer to Geometry object.

\return 0 if false; any other value if true

\sa gaiaIsRing, gaiaIsSimple, gaiaIsClosed, gaiaIsValid

\note reentrant and thread-safe.

\remark \b GEOS support required.