r8blt, a C code which carries out some basic linear algebra operations on R8BLT matrices (real 64 bit precision band lower triangular format).
The information on this web page is distributed under the MIT license.
r8blt is available in a C version and a C++ version and a Fortran90 version and a MATLAB version and an Octave version and a Python version.
linear_algebra, C codes which carry out various linear algebra operations for matrices stored in a variety of formats.