Code is crap in temperature function (mathmod)

[TheTechRobo]

Describe the change
Refactor would be good (copying relevant code into new file)

Describe the solution you'd like
Refactor temperature function into multiple functions inside temperature.py

Describe alternatives you've considered
Rewrite would be much more work. Not doing it is bad since the current api needs you to look at documentation 50 times per line of code that uses it.

Additional context
Should be done in the rewrite

[TheTechRobo]

Done :D

Partially tested, and should work since it's the old formulas just written out differently