Hi Nicolas, these methods are just there so that you don't have to cast in case putting a double in a matrix (although you will loose precision). In the near future the TMatrix and TVector classes will get double precision cousins. Cheers, Fons. Nicolas Produit wrote: > > Hi, > why are some methods of TMatrix defined with Double_t > and some other with Real_t? > The base element seems to be Real_t: > TMatrix &TMatrix::operator=(Real_t val) > TMatrix &TMatrix::operator+=(Double_t val) > > Thanks > > -- > Nicolas Produit -- 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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