I am trying to attach CLHEP Hep3Vector to root. I worked out most of the
neccessary code changes, and I can produce a shared library which I can
load into root. But a few questions remain:
o) It seems impossible to get non-member operators (i.e. operators like
"operator+" which are traditionally declared outside the class) to be
recognised in root. I got the "operator+" only working by making it a
member of "class Hep3Vector". Is this to be expected?
o) I also found that using "inline" to make e.g. the definition of
"operator+" inline wreaked havoc in root. For example, when the default
constructor of Hep3Vector is "inline" I get:
root [2] Hep3Vector v1
*** Break *** segmentation violation
*** Break *** keyboard interrupt
Root > .q
The same happens for the invocation of other member functions of
Hep3Vector. I could get all the operations in Hep3Vector to work by
removing "inline" everywhere. Is this normal?
o) An aside, I found that placing "ClassDef(Hep3Vector,1)" at the end of
the "public:" section of class Hep3Vector, after about 20 or so member
function declarations, gave me:
[online04] ~/scratch/CLHEP > rootcint -f ThreeVectorCint.cc -c
ThreeVector.h LinkDef.h
Error: Too many '}' FILE:ThreeVector.h LINE:183
Moving "ClassDef(Hep3Vector,1)" to the top of the "public:" section
cured this problem. All the root examples put the ClassDef macro at the
end, so I am not shure if this will cause other problems for me.
o) Another "feature" is that root sometimes prints some extra stuff when I
use Hep3Vector operations:
root [2] Hep3Vector v1
root [3] Hep3Vector v2= Hep3Vector(2,2,2)
root [4] Hep3Vector v3
root [5] v3=v1+v2
(class Hep3Vector)5377455048
root [6]
I am referring to the "(class Hep3Vector)5377455048". Does this
indicate a problem of some sort?
cheers, Stefan
---Stefan Kluth---------------Lynen Fellow----------------|\--|\-------
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