Use std::expm1() in conversion from Planck to Rosseland.#173

Merged

RyanWollaeger merged 3 commits intolanl:developfrom dholladay00:develop

Mar 6, 2017

+2-2

Commits on Mar 2, 2017

Use std::expm1() in conversion from Planck to Rosseland.
Daniel Holladay
committed
Leaving expm1, putting logic back in place. Replacing with slightly more accurace approximation.
Daniel Holladay
committed
Slightly more accurate approximation.
Daniel Holladay
committed