Greetings R developers!
I have been working on a just-in-time compiler for R arithmetic expressions.
An example:
jit(1) # turn on just-in-time compilation
for(i in 1:na) # example convolution code
for(j in 1:nb)
ab[i + j] <- ab[i + j] + a[i] * b[j]
The loop will run about 30% faster. That's not much of a speedup, but the
code is still in early development and the figure will get much better.
If you are interested there is more information at
www.milbo.users.sonic.net/ra.
Stephen Milborrow
www.milbo.users.sonic.net
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