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[Discuss-gnuradio] Re: patch to add complex implementations of agc and s

From: Martin Dvh
Subject: [Discuss-gnuradio] Re: patch to add complex implementations of agc and single pole iir filter
Date: Thu, 02 Feb 2006 06:13:27 +0100
User-agent: Debian Thunderbird 1.0.2 (X11/20051002)

Eric Blossom wrote:
> On Wed, Feb 01, 2006 at 03:39:57PM -0800, Eric Blossom wrote:
>>On Wed, Feb 01, 2006 at 11:32:06PM +0100, Martin Dvh wrote:
>>>I implemented complex versions of agc and single pole iir filter.
>>>To do this I had add an extra calc_type parameter to the gr_single_pole_iir 
>>>(I changed all blocks that use this accordingly)
>>>If this extra parameter is not wanted I could still implement a complex iir 
>>>filter but then I am forced to use also a complex value for the tap.
>>>Which is not quite intuitive, and also has a higher computational load as 
> On second thought, it might be easier just to ditch the template stuff
> altogether and just implement the two or three versions that we care
> about.
I am not very handy with templates yet but I do like the concept.
"Write once and only once" is a programming paradigm which prevents many errors 
and can save a lot of work when you add/change/optimize
something later on.

So, what to do?
keep the extra parameter I implemented.
Use the "partial specialization"
Implement different versions.

Are there any examples of partial specialization in the codebase yet.

> Eric

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