Hello, The behavior of TF1::Eval() has changed when typed at the ROOT Command line - it seems be returning long long: Version 3.03/9a root [2] TF1 *f = new TF1("f","sin(x)",0.,10.) root [3] f->Eval(3.) (Double_t)1.41120008059867210e-001 Version 3.05/3 root [0] TF1 *f = new TF1("f","sin(x)",0., 10.) root [1] f->Eval(3.) (long long)0 However, the following printf works, but whats the (long long)9? root [2] printf("%f\n",f->Eval(3.)) 0.141120 (long long)9 I use Win2K, binary releases Ed
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