Hi Martin,
you did not export the friend functions to the interpreter via a LinkDef.h
file. Remember, friends are no class member functions. Add to the LinkDef:
#pragma link C++ function operator+(const V3D&,const V3D&);
Cheers, Fons.
martin wrote:
>
> dear rooters,
> i made a simple vector class which i implemented in root via rootcint.
> everithing wokes fine exept that i can't define (override) any
> operators.
> example:
>
> in V3D.h :
> friend V3D operator+(const V3D &v ,const V3D &w);
>
> in V3D.C :
> V3D operator + (const V3D &v, const V3D &w)
> { V3D r=V3D(v.GetX()+w.GetX(), v.GetY()+w.GetY(), v.GetZ()+w.GetZ());
> return r;
> }
>
> when i now do:
> V3D peter;
> const V3D paul(1,2,3);
> const V3D nmary(10,10,10);
> everithing is ok, but :
>
> peter = paul + nmary;
> Error: operator+ not defined for V3D
> FILE:/data_fck/schulte/root/Rummspiel/Linking/./test+.C LINE:6
> *** Interpreter error recovered ***
>
> what seems strange, is that compilation an linking works whithout
> errors. all other defined funktions work well.
>
> so, is it a bug or do i do something stupid?
>
> thank you.
--
Org: CERN, European Laboratory for Particle Physics.
Mail: 1211 Geneve 23, Switzerland
E-Mail: Fons.Rademakers@cern.ch Phone: +41 22 7679248
WWW: http://root.cern.ch/~rdm/ Fax: +41 22 7677910
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