@spiceErrorCheck<EOL>def elemd(item, inset):
assert isinstance(inset, stypes.SpiceCell)<EOL>assert inset.dtype == <NUM_LIT:1><EOL>item = ctypes.c_double(item)<EOL>return bool(libspice.elemd_c(item, ctypes.byref(inset)))<EOL>
Determine whether an item is an element of a double precision set.

http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/elemd_c.html

:param item: Item to be tested.
:type item: float
:param inset: Set to be tested.
:type inset: spiceypy.utils.support_types.SpiceCell
:return: True if item is an element of set.
:rtype: bool