CompiledFunction for matrices ??
- To: mathgroup at smc.vnet.net
- Subject: [mg16069] CompiledFunction for matrices ??
- From: "Ersek, Ted R" <ErsekTR at navair.navy.mil>
- Date: Tue, 23 Feb 1999 03:45:22 -0500
- Sender: owner-wri-mathgroup at wolfram.com
While writing some code to answer a question Peter Klamser sent in I found
myself wanting to write a CompiledFunction that takes a length (n) vector of
real numbers.
The best solution I could find is to explicitly write out (n) variables as
in:
foo=Compile[{x1,x2,x3, ... , xn}, expr]
Then I can evaluate something like:
Apply[foo, {6.2,4.1,2.5,8.6,7.7,9.1,2.2,1.4}]
If I want to write a CompiledFunction that takes an (m) by (n) matrix of
real numbers it's also a real chore by any method I know of.
The documentation says:
Compile[{{x1, t1, n1}, ... }, expr] assumes that xi is a
rank ni array of objects each of a type which matches ti.
I used to think this allowed the sort of thing I am looking for, but I
didn't think about it long enough. It seems
Compile[{{m,_Real,n}}, expr] (for n>2) takes a tensor.
__________________
So how can we write a CompiledFunction that takes a large vector or large
matrix?
Thanks,
Ted Ersek