@spiceErrorCheck<EOL>def vadd(v1, v2):
v1 = stypes.toDoubleVector(v1)<EOL>v2 = stypes.toDoubleVector(v2)<EOL>vout = stypes.emptyDoubleVector(<NUM_LIT:3>)<EOL>libspice.vadd_c(v1, v2, vout)<EOL>return stypes.cVectorToPython(vout)<EOL>
Add two 3 dimensional vectors.
    http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/vadd_c.html

    :param v1: First vector to be added. 
    :type v1: 3-Element Array of floats
    :param v2: Second vector to be added. 
    :type v2: 3-Element Array of floats
    :return: v1+v2
    :rtype: 3-Element Array of floats