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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] Problem extending MatrixBase
- From: Gael Guennebaud <gael.guennebaud@xxxxxxxxx>
- Date: Sun, 17 Jan 2010 20:12:03 +0100
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On Sun, Jan 17, 2010 at 7:56 PM, Aron Ahmadia <aja2111@xxxxxxxxxxxx> wrote:
> Gael, did you mean to modify one of those lines?
>
>> const CwiseUnaryOp<ei_scalar_add_op<Scalar>, Derived>
>> const CwiseUnaryOp<ei_scalar_add_op<Scalar>, Derived>
arf bad copy/paste, the lines to changes were:
const typename Cwise<Derived>::ScalarAddReturnType
I said "were", because I've just committed the fix, so if you hg pull
-u, then you're good.
gael.
>
> A
>
> On Sun, Jan 17, 2010 at 9:53 PM, Gael Guennebaud
> <gael.guennebaud@xxxxxxxxx> wrote:
>> I guess this is because of a recursive dependency. To make it work, in
>> the last two functions, replace:
>>
>> const CwiseUnaryOp<ei_scalar_add_op<Scalar>, Derived>
>>
>> by
>>
>> const CwiseUnaryOp<ei_scalar_add_op<Scalar>, Derived>
>>
>> gael
>>
>> On Sun, Jan 17, 2010 at 6:42 PM, Benoit Jacob <jacob.benoit.1@xxxxxxxxx> wrote:
>>> Le 17 janvier 2010 05:46, Raphaël Poncet <raphael.poncet@xxxxxxxxx> a écrit :
>>>> Hello list,
>>>>
>>>> I'm running into problems while trying to extending MatrixBase as explained
>>>> in the wiki:
>>>> http://eigen.tuxfamily.org/dox/CustomizingEigen.html#ExtendingMatrixBase
>>>>
>>>> I copied/pasted MatrixBaseAddons.h in my working directory. This code
>>>> doesn't compile
>>>> (with g++-4.4 or g++-4.3, using Eigen 2.0.5, the version packaged in my
>>>> Ubuntu distro) :
>>> [snip]
>>>>
>>>> However, If i comment out the last 2 declarations in MatrixBaseAddons.h (the
>>>> ones with operator+),
>>>> it does compile. What am I doing wrong ?
>>>
>>> Nothing it seems, I am really puzzled. I fixed an error in our
>>> example, there was a missing semicolon, but that wasn't it. I don't
>>> understand what ConstantReturnType has to do with it.
>>>
>>>>
>>>> P.S. Btw, I want to extend MatrixBase because I'm only using Array
>>>> capabilities in Eigen
>>>> in my code atm, and want to get rid of all the cwise()
>>>
>>> Then why don't you give the development branch a try. It has a Array
>>> class where all operations are implicitly cwise.
>>>
>>> Benoit
>>>
>>>
>>>
>>
>>
>>
>
>
>