<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def sphcyl(radius, colat, slon):
 """ This routine converts from spherical coordinates to cylindrical coordinates. http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/sphcyl_c.html :param radius: Distance of point from origin. :type radius: float :param colat: Polar angle (co-latitude in radians) of point. :type colat: float :param slon: Azimuthal angle (longitude) of point (radians). :type slon: float :return: Distance of point from z axis, angle (radians) of point from XZ plane, Height of point above XY plane. :rtype: tuple """

    radius = ctypes.c_double(radius)
    colat = ctypes.c_double(colat)
    slon = ctypes.c_double(slon)
    r = ctypes.c_double()
    lon = ctypes.c_double()
    z = ctypes.c_double()
    libspice.sphcyl_c(radius, colat, slon, ctypes.byref(r), ctypes.byref(lon),
                      ctypes.byref(z))
    return r.value, lon.value, z.value