[Lazarus] Generic Matrix "Class" for nice matrix formulas

[paco at fe.up.pt]

Quoting Paul Ishenin

> I see your matrix store double type value. Is it possible to write a
> generic matrix class using FPC class templates (although I never used
> FPC templates)?

While I think it is possible it doesn't seem a good idea in terms of  
extra work versus the extra functionality:
I felt for that temptation with my C++ version and the code was ugly,  
the declarations were ugly and the errors also become ugly. Worse, it  
doesn't make sense for most types, integer times are not suited to  
matrix operations like inversion and for the real types, extended is  
becoming deprecated and the only contenders are doubles and floats.

I did a version using defines to create a float and a double version  
but found out that I ended only using the double version...


Best regards,

Paulo Costa