Cbuffer_cmp Cbuffer_contains Cbuffer_covers Cbuffer_disjoint Cbuffer_dwithin Cbuffer_eq Cbuffer_ge Cbuffer_gt Cbuffer_intersects Cbuffer_le Cbuffer_lt Cbuffer_ne Cbuffer_same Cbuffer_touches

Cbuffer_dwithin() Datum Cbuffer_dwithin ( PG_FUNCTION_ARGS  ) Return true if two circular buffers are within a distance @sqlfn cbuffer_dwithin()