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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def udf(x):
 """ No-op routine for with an argument signature matching udfuns. Allways returns 0.0 . https://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/udf_c.html :param x: Double precision value, unused. :type x: float :return: Double precision value, unused. :rtype: float """

    x = ctypes.c_double(x)
    value = ctypes.c_double()
    libspice.udf_c(x, ctypes.byref(value))
    return value.value