gauss_seidel, a C++ code which sets up the Gauss-Seidel iteration for linear systems.
The information on this web page is distributed under the MIT license.
gauss_seidel 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 and an R version.
cg_rc, a C++ code which implements the conjugate gradient method for solving a positive definite sparse linear system A*x=b, using reverse communication.
jacobi, a C++ code which sets up the Jacobi iteration for linear systems.
test_matrix, a C++ code which defines test matrices for which the condition number, determinant, eigenvalues, eigenvectors, inverse, null vectors, P*L*U factorization or linear system solution are known. Examples include the Fibonacci, Hilbert, Redheffer, Vandermonde, Wathen and Wilkinson matrices.