code: def vsubg(v1, v2, ndim):
      
      v1 = stypes.toDoubleVector(v1)
      v2 = stypes.toDoubleVector(v2)
      vout = stypes.emptyDoubleVector(ndim)
      ndim = ctypes.c_int(ndim)
      libspice.vsubg_c(v1, v2, ndim, vout)
      return stypes.cVectorToPython(vout)
docs: Compute the difference between two double precision
      vectors of arbitrary dimension.
  
      http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/vsubg_c.html
  
      :param v1: First vector (minuend). 
      :type v1: Array of floats
      :param v2: Second vector (subtrahend). 
      :type v2: Array of floats
      :param ndim: Dimension of v1, v2, and vout. 
      :type ndim: int
      :return: Difference vector, v1 - v2.
      :rtype: Array of floats