Modify TVector3::Perp2 such that the function returns always a quantity >= 0. This prevents a sqrt(negative value) in TVector3::Perp.
Modify TVector3::Perp2 such that the function returns always a
quantity >= 0. This prevents a sqrt(negative value) in TVector3::Perp.


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@11684 27541ba8-7e3a-0410-8455-c3a389f83636

bbannier/ROOT,dawehner/root,dawehner/root,dawehner/root,dawehner/root,bbannier/ROOT,dawehner/root,dawehner/root,dawehner/root,bbannier/ROOT,bbannier/ROOT,bbannier/ROOT,dawehner/root,bbannier/ROOT,bbannier/ROOT