r8sr, a FORTRAN90 library which carries out linear algebra operations for R8SR matrices (real, 64 bit, diagonal + compressed row offdiagonal format).
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
r8sr is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version and a Python version.
linear_algebra, Fortran90 codes which carry out various linear algebra operations for matrices stored in a variety of formats.