@spiceErrorCheck<EOL>def vhat(v1):
v1 = stypes.toDoubleVector(v1)<EOL>vout = stypes.emptyDoubleVector(<NUM_LIT:3>)<EOL>libspice.vhat_c(v1, vout)<EOL>return stypes.cVectorToPython(vout)<EOL>
Find the unit vector along a double precision 3-dimensional vector.

http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/vhat_c.html

:param v1: Vector to be unitized. 
:type v1: 3-Element Array of floats
:return: Unit vector v / abs(v).
:rtype: 3-Element Array of floats