Fortran 77 subroutines by Henk A. van der Vorst for the iterative methods GMRESR and BiCGstab(ell). These are methods for the iterative solution of large and typically sparse systems of linear equations with a nonsymmetric matrix.

Fortran 95 interface to the BLAS (Basic Linear Algebra Subprograms). The interface is a subset of the BLAS technical forum standard, covering the functionality of level 2 and 3 legacy BLAS routines (available on most machines).

Library by Isak Jonsson and Bo Kågström for solving triangular Sylvester-type matrix equations.

Toolkit containing various Fortran routines developed over a number of years in support of several code efforts at Los Alamos National Lab. It contains some BLAS-like routines, some LAPACK-like routines, various iterative solvers, and utility routines...

Computes the periodic real Schur decomposition of a matrix product. By Kurt Lust.

Modification of known Gauss method for pivot element elimination that uses internal rows-transposition-vector and works with matrix strictly "col-by-col". The algorithm factorizes the source matrix so that created factor-matrix may be used several tim...

Codes to solve linear systems with the GMRES and conjugate gradient methods, among other topics.

Updates a dense square factorization L*C = U, when rows and columns of C are added, deleted or replaced.

In Fortran 90, by the MaSe (Matrices Having Structure) Team of the University of Leuven.