[eigen] Adding general (dense matrix) expressions and diagonal matrix expressions

[Dan Čermák <dan.cermak@xxxxxxxxxxxxxxxxxxx>]

Hi everyone,

I am frequently running into the problem, that I can't add general dense 
matrix expressions and diagonal matrix expressions.

Is there any way around this problem? I would really like to be able to create 
expressions of that kind since then I could simply let some of my functions 
return them and add them up without having to keep track of the diagonal and 
non-diagonal expressions myself.

Is something planed to be implemented in the long run or is this fundamentally 
impossible?


Thanks in advance,

Dan