Re: [tng-devel] Eigen 2.0 vs. zero sized matrices

[Sebastian Wolff <sw@xxxxxxxxxxxxxxxxxxxx>]

An Eigen developer replied and recommends to use the default constructor, i.e.

Matrix tmp;

instead of

Matrix tmp(0,0);

to create an empty matrix using Eigen 2.0.


Zitat von Sebastian Wolff <sw@xxxxxxxxxxxxxxxxxxxx>:

> You were right,
>
> there is a  explicit ei_assert() checking the dimension on Matrix 
> creation in Eigen's source code. I wonder why this never appeared on 
> Linux since no #define-s can turn the assert off.
>
> Ways trick around:
>
> (1) Move to Eigen's development version where this check has been removed.
>
> (2) disable all asserts in Eigen: The options
>
>    -DEIGEN_NO_DEBUG and -DNDEBUG
>
> disable all asserts. The symbols must be defined byfore any Eigen 
> header is included.
>
> Regards
> SW