FISHPAK

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.

Recommendation: Use FISHPAK if your application requires direct solvers and free software. Otherwise use CRAYFISH. If you need an iterative solver, consider using MUDPACK.

Usage documentation is available in SCD's FISHPAK source directory, as comment lines in the Fortran source files. Overview documentation is available in the README file in the FISHPAK source directory.
You may obtain Fortran source code from the FISHPAK source directory.
The FISHPAK binary library is available to NCAR computer users, for linking and running with Fortran programs, on some of SCD's compute-servers. See "SCD Computers, Products, and Libraries" for the names of those computers. If you have questions about linking the binary library on these NCAR systems, please see "Linking SCD's Local Fortran Math Libraries".

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