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List:       koffice-devel
Subject:    Re: porting to eigen2
From:       jacob () math ! jussieu ! fr
Date:       2008-08-21 17:05:10
Message-ID: 20080821190510.43zmjlt0mcccg000 () mail ! math ! jussieu ! fr
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Quoting Stefan Nikolaus <stefan.nikolaus@kdemail.net>:

> I don't think, that that was the reason for not using Eigen as storage.
> The class Value is a union of several data types with some conversion logic
> around. If it would just store plain doubles, I would agree with you, but it
> does not.

Yes, in the meanwhile I realized that...

> Some trivial matrix functions should also work with other types and   
> should not
> assume real values as elements, e.g. TRANSPOSE should simply   
> exchange rows and
> columns and leave strings untouched. It's not appropriate to use   
> Eigen in this
> case. For MUNIT it's not necessary; it's even slower than directly   
> filling the
> ValueArray due to the two conversions made.

You're right, I will revert this.

Cheers,
Benoit


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