cg_test, a FORTRAN77 code which calls cg(), which implements a simple version of the conjugate gradient (CG) method for solving a system of linear equations of the form A*x=b, suitable for situations in which the matrix A is symmetric positive definite (SPD), having only real, positive eigenvalues.
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cg, a FORTRAN77 code which implements a simple version of the conjugate gradient (CG) method for solving a system of linear equations of the form A*x=b, suitable for situations in which the matrix A is symmetric positive definite (SPD), having only real, positive eigenvalues.