Function extension

[RDeRenzi]

Hi
from my very partial understanding of how the code works I expect that the simple addition of two code lines each for log10, log and exp in equation_base.py, e.g.

 if has_numpy:
     addFn('exp',"exp({0:s})","\\exp{{{0:s}}}",1,np.exp)
else:
     addFn('exp',"exp({0:s})","\\exp{{{0:s}}}",1,math.exp)

should suffice to implement also those three functions that are presently missing.
May I propose this?

Thanks Roberto