@ — Returns TRUE if A's bounding box is contained by B's. Uses double precision bounding box.
boolean @(
              raster 
              A
            , 
              raster 
              B
            );
boolean @(
              geometry 
              A
            , 
              raster 
              B
            );
boolean @(
              raster 
              B
            , 
              geometry 
              A
            );