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Describe the bug

In RooStats::HypoTestInverterResult::FindIndex( x ), if x == 1 then the return value is always -1 rather than the index of that xvalue. The problem is on L571-573 (in current master) of HypoTestInverterResult.cxx where the following if statement is used:

if ( (std::abs(xvalue) > 1 && TMath::AreEqualRel( xvalue, xpoint, tol) ) ||
     (std::abs(xvalue) < 1 && TMath::AreEqualAbs( xvalue, xpoint, tol) ) )
  return i; 

Please change the first piece of one of these two statements to include xvalue==1 (i.e. from > to ≥ or < to ≤). I don't think it matters which is changed.

Expected behavior

FindIndex should return the index of requested xvalue in the internal results array.

To Reproduce

Setup

I am using ROOT 6.22/00 from LCG_98python3 but this is still in issue in the master branch (per online documentation).

Additional context