Re: [julia-users] Re: Generate polynomial expression on the fly

[Steven G. Johnson]

(Note that this is not generating the most efficient possible code, because 
it is computing all of the polynomial terms independently, when in 
principle they could share multiplications.   A more efficient version 
would precompute x1^2,x1^3,x1^4,.... and so on for each of the variables, 
using repeated multiplication rather than ^, and then use these precomputed 
powers.   If N is large this will make a big difference in the speed.  The 
nice thing about code generation is that it is really practical to pull out 
all the tricks, without losing flexibility, when performance really 
matters.)