[Numpy-discussion] numexpr

[Tim Hochberg]

I made some more changes to numexp including adding the optimiztions to 
pow that we earlier added to numpy. It would be nice to have some way to 
select the level of optimization. That way, we could work on very 
aggressive optimization without worrying about messing someone up later 
who would can't tolerate the moderate accuracy loss. The only idea I 
have thus far is to create a new Expression each time, instead of just 
using the precreated 'E'. This would allow us to pass in a context to 
Expression and this could be passed onto the Nodes that were 
subsequently created from it so that it would be available where it's 
needed.

That may not make any sense to anyone but David, but I invite you look 
numexpr/expression.py and numexpr/compiler.py. Then it'll be clear 
as,..., well clear as something.

-tim