free c library like IMSL
 

Hi:
friends. I am busy with transforming my long fortran95 procedure to the C++ language.In my fortran procedure, the IMSL lib was called many time to solve eigenvalue problems.
Could you please tell me that was there any free code like imsl in C++ language. or some free code for the solving of eigenvalue problems.
Thanks a lot.

eigenWHO?

Seriously - I gather this is some specialized mathematics based on Google.

Google pulled up quite a few hits. Try doing one with the terms "eigenvalue" "library" "C++". (without the quotes). You should see several hits which probably mean more to you than they did to me.

The first one sounds like it may be what you want but I notice it is last updated in 1998 so you may want to look at later entries.

Thank you very much jlightner.
good luck to you