The latest 34S firmware now has a modified version of the PPC IG Romberg integration routine in the firmware. The non-adaptive Gauss-Kronrod quadrature is gone -- for good I hope.
The main modification I made to the PPC IG routine is a little bit of extra code to ensure the final three estimates are equal like the 34c's integration code. The original PPC IG routine only required the final two to be equal. I made a few other small tweaks to Les Wright's port of the PPC IG routine but nothing too significant.
Yet another reason to upgrade to the upcoming v3 firmware. As if there weren't enough reasons already :-) Version 3 is far and away better than version 2!
- Pauli