TF1 with interpreted function

From: Phil Adamson (p.adamson@sussex.ac.uk)
Date: Fri Nov 12 1999 - 16:32:23 MET 

Double_t myfunc(Double_t *x, Double_t *par)
{
  return (Double_t) *x;
}

void test(void) {
 
  TCanvas *c = new TCanvas("c","Test",100,100,600,600);
  TF1 *f1 = new TF1("f1",myfunc,0,5);
  c->SetGridx();
  c->SetGridy(); 
  f1->Draw();
}

Root 2.22/10

root [2] .L test.C
root [3] test()   

*ERROR 26 : 
 Unknown name : "myfunc"

Am I doing something silly?

	Phil

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