android/spatialiteandroidlibrary/src/main/jni/geos-3.2.2/capi/geos_c.cpp
const Geometry *
GEOSGetExteriorRing(const Geometry *g1)
{
    return GEOSGetExteriorRing_r( handle, g1 );
}
/*
 * Call only on polygon
 * Return a copy of the internal Geometry.
 */
Call only on polygon
Return a copy of the internal Geometry.
Call only on polygon Return a copy of the internal Geometry .
const Geometry *
GEOSGetExteriorRing(const Geometry *g1)
{
    return GEOSGetExteriorRing_r( handle, g1 );
}
const Geometry * GEOSGetExteriorRing ( const Geometry * g1 ) { return GEOSGetExteriorRing_r ( handle , g1 ) ; }
Call only on polygon
 Return a copy of the internal Geometry.
Call only on polygon Return a copy of the internal Geometry .