| Re: [eigen] Alignment of a derived class |
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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] Alignment of a derived class
- From: Gael Guennebaud <gael.guennebaud@xxxxxxxxx>
- Date: Fri, 20 Jul 2012 18:08:04 +0200
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Hi,
> I have another question:
>
> I saw that you define
> typedef void eigen_aligned_operator_new_marker_type;
> in the macro
> EIGEN_MAKE_ALIGNED_OPERATOR_NEW_IF
> in Memory.h
>
> Do you have a structure in Eigen that checks if the typedef is defined, similar to the second example here:
> http://en.wikipedia.org/wiki/SFINAE
no, and actually I'm not sure eigen_aligned_operator_new_marker_type
is still needed.
> If Eigen provides this I would not have to define it myself.
>
> Basically what I want to do is to use boost::conditional to check if I have to use the aligned allocator for a vector.
Boost offers what you need to test if
eigen_aligned_operator_new_marker_type is present. I don't remember in
which package though.
gael
>
> thank you,
> Martin
>
>
>
>