**Next message:**Rene Brun: "Re: [ROOT] Core dump using Root 4.00-08 in TTree:SetName()"**Previous message:**Frank Winklmeier: "[ROOT] Core dump using Root 4.00-08 in TTree:SetName()"**In reply to:**Smbat Grigoryan: "[ROOT] Strange behaviour of TF2->Integral()"**Messages sorted by:**[ date ] [ thread ] [ subject ] [ author ]

Before you sent this mail to roottalk, I already replied to your private mail that this problem had been fixed in the CVS version. The problem occuring for symmetric functions in x and y. Rene Brun On Fri, 3 Sep 2004, Smbat Grigoryan wrote: > Hi, > > I have a problem with 2-dimensional integral. > Here is a test macro showing the problem: > > Double_t func(Double_t *x, Double_t *par) { > Double_t r = 1 - x[0]; > // Double_t r = x[0]; > > if (r < 0.5) > return par[0]; > else > return 0; > } > > void test() { > > TF2 *f2 = new TF2("f2",func,0,1,0,1,1); > f2->SetParameter(0, 1); > > cout << f2->Integral(0,1,0,1) <<endl; > > } > > After .x test.C I get 0 instead of 0.5, > but if I uncomment the 3rd line and comment the 2nd one > I get 0.5 as it should be. (One dimensional integral is OK for > both options). > I am using ROOT v. 3.10/02 > Any idea? > > Thank you very much in advance, > Smbat >

**Next message:**Rene Brun: "Re: [ROOT] Core dump using Root 4.00-08 in TTree:SetName()"**Previous message:**Frank Winklmeier: "[ROOT] Core dump using Root 4.00-08 in TTree:SetName()"**In reply to:**Smbat Grigoryan: "[ROOT] Strange behaviour of TF2->Integral()"**Messages sorted by:**[ date ] [ thread ] [ subject ] [ author ]

*
This archive was generated by hypermail 2b29
: Sun Jan 02 2005 - 05:50:09 MET
*