r83p, a FORTRAN90 code which carries out some basic linear algebra operations on R83P matrices (real 64 bit precision tridiagonal periodic format).
The computer code and data files made available on this web page are distributed under the GNU LGPL license.
r83p 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.