I am trying to solve a set of linear equations for a material model through c++.
The system was already solved in Mathematica using Krylov method (BiCGStab).
I am trying to solve eigenvalue problem using zfeast_hcsrev routine, here is the excerpt from my code
Here's an example of sgemm program.
Currently, I have a code that uses Eigen (a C++ template library for linear algebra) to save a square general dense matrix in the following way