<commit_before>Arpaca - ARPACk Adaptor for real symmetric eigenproblem in C++ with Eigen
=========================================================================

Arpaca is a thin wrapper of ARnoldi PACKage (ARPACK) in C++ using Eigen.

Requirement
-----------

Arpaca uses [ARPACK](http://www.caam.rice.edu/software/ARPACK/ "arpack").
You can install ARPACK in many package systems.
If you want to install it from source code,
gfortran, BLAS (ATLAS is better as its implementation) and LAPACK are
required.

arpaca_performance_test also depends on
[pficommon](http://github.com/pfi/pficommon "pficommon").

Installation
------------

Just copy arpaca.hpp to any path in include paths list.
<commit_msg>update installation guide<commit_after>Arpaca - ARPACk Adaptor for real symmetric eigenproblem in C++ with Eigen
=========================================================================

Arpaca is a thin wrapper of ARnoldi PACKage (ARPACK) in C++ using Eigen.

Requirement
-----------

Arpaca uses [ARPACK](http://www.caam.rice.edu/software/ARPACK/ "arpack"),
which you can install by many package managers.
If you want to install it from source code,
gfortran, BLAS (ATLAS is better as its implementation) and LAPACK are
required.

arpaca_performance_test also depends on
[pficommon](http://github.com/pfi/pficommon "pficommon").

Installation
------------

Just copy arpaca.hpp where you like.
Since the interface may be changed in the future,
it is recommended to copy it to the local directory of your own project.

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