def CallUDFUNS(f, x):
value = c_double()<EOL>f(x, byref(value))<EOL>return value.value<EOL>
We are given a UDF CFUNCTYPE and want to call it in python

:param f: SpiceUDFUNS
:type f: CFUNCTYPE
:param x: some scalar
:type x: float
:return: value
:rtype: float