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- To: eigen@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [eigen] Compiling Eigen2-based code in Eigen3
- From: Benoit Jacob <jacob.benoit.1@xxxxxxxxx>
- Date: Mon, 19 Jul 2010 10:06:40 -0400
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2010/7/19 Jordi Pages <jordi.pages@xxxxxxxxxxxxxxxx>:
> Hi, I am using Eigen3 but I am also using ROS code that is written for
> Eigen2. The following type declaration is not compiling:
>
> Eigen::Map<Eigen::Vector4f, Eigen::ForceAligned> pp;
>
> According to the Eigen3 source code I think that Eigen::ForceAligned has
> been replaced by Eigen::Aligned, hasn't it? Nevertheless, I was wondering if
> the old enum { ForceAligned, AsRequested } in Constants.h should be also
> declared when using the pre-compilation flag EIGEN2_SUPPORT.
ForceAligned in Eigen2 wasn't the same thing as Aligned in Eigen3.
Actually, ForceAligned was very confusing, and didn't mean what it
seemed to. Eigen2 just didn't have any proper support for mapping
aligned buffers.
You should do something like:
#ifdef I_AM_USING_EIGEN3
#define ALIGNED_IF_EIGEN3 Aligned
#else
#define ALIGNED_IF_EIGEN3
#endif
Eigen::Map<Eigen::Vector4f, ALIGNED_IF_EIGEN3> pp;
Benoit
>
> Regards
>
> Jordi Pages, PhD
> Researcher
> Pal Robotics S.L.
>
> Tel: +34.93.414.53.47
> Fax: +34.93.209.11.09
> C/ Pujades 77-79 4º 4ª 08005 Barcelona, Spain.
> http://www.pal-robotics.com/
>
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