The first thing I want to try is as follows:
I would like to be able to use this algorithm on compile-time values,
such as a known filter, and re-use it on the input signal I want to
process at run-time.
The usual use case is that you have a pre-computed filter (the DFT of
your filter), and perform an FFT on an input signal at run-time.
Instead of calculating the DFT off-line, I would like to just
calculate this with a compile-time operation. For now, I could just
use the DFT operation for the run-time calculation, but maybe later
rewrite it as an FFT.
After this I would like to try this on signals that mix run-time and
compile-time values, such as a signal padded with zeros. This could
potentially eliminate the usual DFT/FFT instructions on the zeroed
part, using the compiler to optimize these away.
Chris
On 1/22/07, Joel de Guzman
Chris Weed wrote:
Hi, I wanted to try to write a DFT that can take a compile-time data structure such as the following:
[snip]
There doesn't seem to be a runtime component there. What am I missing? Do you intend to mix runtime values (e.g. int, doubles) with mpl math stuff?
Regards, -- Joel de Guzman http://www.boost-consulting.com http://spirit.sf.net
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