[Rivet] rev. 890 broke CDF_2008_DRELLYAN

[Hendrik Hoeth]

Hi,

Thus spake Andy Buckley (andy.buckley at durham.ac.uk):

> How broken? As in "it segfaults", or "the plots are bad"?

Broken as in "the plots are bad".

> > Andy, do you have any idea what could be going on here? It seems to
> > be related to the changes you made to the math classes.
> 
> The math class changes were:
> 
>  * Using Rivet namespace for math util functions (this was a bigger
>    change than it sounds - almost a day's worth of rewriting)
>  * Better range checking for angular ranges
>  * A few other things that should have no user effect
> 
> Which functions are being used?

Probably angular things. The "away region" plots seem to be affected
more than "towards" and "transverse".

   Hendrik

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