Tests if a Cone is pointed, i.e. the lineality space is 0. A Fan is pointed if one of its Cones is pointed. This is equivalent to all Cones being pointed.
i1 : C = coneFromHData(matrix{{1,1,-1},{-1,-1,-1}})
o1 = C
o1 : Cone
i2 : isPointed C
o2 = false
i3 : C = intersection{C, coneFromHData(matrix{{1,-1,-1}})}
o3 = C
o3 : Cone