Thanks! I also solved this problem in a similar way following Rene Brun's
advice, for 2D function. First declare a global pointer and make it
accessible to all the member functions via constructor:
static PRCHe3 *gHe3;
PRCHe3::PRCHe3(..)
{
...
gHe3 = this;
}
Then I can define
Double_t (*func)(Double_t *, Double_t *);
Double_t func1(Double_t *x, Double_t *p)
{
Double_t t = x[0];
Double_t v = x[1];
return gHe3->IntegrandQR(t,v);
}
func = func1;
TF2 *f2 = new TF2("quasielastic", func, -10, 10, -20, 20, 0);
...
I agree it's a little painful to do this all the time. And it will be very
interesting to understand why TF1 can not call directly a member function.
Best regards,
Feng
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