FISHPAK is a free, portable library for the direct solution of finite difference approximations to two-dimensional Helmholz equations in Cartesian, polar, cylindrical, interior spherical coordinates, and surface spherical coordinates, with various combinations of periodicity, normal derivative, or solution of the boundaries of a regular domain. Versions of these two-dimensional codes are provided for both standard and staggered grids. Additionally, FISHPAK provides two routines for solving more general two-dimensional separable elliptic equations, and one routine for solving a system of linear equations resulting from the discretization of a three-dimensional separable elliptic equation. Press HERE for more information on FISHPACK.
FFTPACK is a free, portable library of Fortran routines for computing the fast Fourier transform of the following one-dimensional periodic sequences: real, complex, quarter sine, quarter cosine, sine, and cosine. If you need multiply dimensioned FFTs, FFTPACK will not help you. FFTPACK was developed at NCAR. Press HERE for more information on FFTPACK.
EISPACK is a free, portable library for calculating eigenvectors and eigenvalues. Use EISPACK routines only if your application has already been built and depends on them. Otherwise, use routines from the more modern library LAPACK, especially if LAPACK is included in an optimized library on the computer where you are working. Press HERE for more information on EISPACK.
LAPACK is a free, portable, modern (1990) library of Fortran 77 routines for solving the most common problems in numerical linear algebra: linear systems of equations, eigenvalues and eigenvectors, linear least squares, and singular value decomposition. It is designed to be efficient on a wide range of high-performance computers, under the proviso that the hardware vendor has implemented an efficient set of BLAS (Basic Linear Algebra Subroutines). The name LAPACK is an acronym for Linear Algebra Package. Press HERE for more information on LAPACK.
ODEPACK is a systemized package of routines for solving systems of initial value, ordinary differential equations, for stiff and non-stiff problems. This package uses Gear's method and step methods. The user has the option of providing Jacobian matrices for the stiff case, or of letting ODEPACK generate them numerically. Use ODEPACK, unless you can find comparable, faster software for your problem. Press HERE for more information on ODEPACK.
Libary Names and command line options are: