[mesa-users] Metal mass fractions from chem_def

[Josiah Schwab]

Hi Ehsan,

> Perhaps, crlibm_init() can go into chem_init() to ensure correct use
> of exponentials, otherwise, a user — who is not very updated with all
> design changes and updates — may miss this tiny little detail, and do
> computations wrong. Consider this, please, as a suggestion only.

You should call crlibm_init before using other MESA modules too, so I
don't think it makes sense to directly include it in chem_init.

I do agree it would be nice if the code didn't let you do what you did
without complaining, but I don't know if that is feasible.  At least it
gives obviously bogus results and not subtly wrong ones :)

Josiah