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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <imhdr.h>
include <pmset.h>
include <plio.h>
# PM_EMPTY -- Test whether a mask is empty, i.e., contains no nonzero pixels.
bool procedure pm_empty (pl)
pointer pl #I mask descriptor
bool pl_empty(), pl_sectnotempty()
include "pmio.com"
begin
if (PM_MAPXY(pl) == YES) {
call amovkl (1, v1, PM_MAXDIM)
call imaplv (PM_REFIM(pl), v1, v2, PM_MAXDIM)
call amovl (IM_LEN(PM_REFIM(pl),1), v3, PM_MAXDIM)
call imaplv (PM_REFIM(pl), v3, v4, PM_MAXDIM)
return (!pl_sectnotempty (pl, v2, v4, PM_MAXDIM))
} else
return (pl_empty (pl))
end
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