@spiceErrorCheck<EOL>def vdist(v1, v2):
v1 = stypes.toDoubleVector(v1)<EOL>v2 = stypes.toDoubleVector(v2)<EOL>return libspice.vdist_c(v1, v2)<EOL>
Return the distance between two three-dimensional vectors.

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

:param v1: First vector in the dot product. 
:type v1: 3-Element Array of floats
:param v2: Second vector in the dot product. 
:type v2: 3-Element Array of floats
:return: the distance between v1 and v2
:rtype: float