r83t, a Python code which carries out some basic linear algebra operations on R83T matrices (real 64 bit precision tridiagonal Mx3 format).
The information on this web page is distributed under the MIT license.
r83t is available in a C version and a C++ version and a Fortran90 version and a MATLAB version and a Octave version and a Python version.
linear_algebra, a Python code which carries out various linear algebra operations for matrices stored in a variety of formats.