Code from book and for nonlinear optimization and matrix equations, by Stephen Nash.

Home of the Numerical Recipes series of books on scientific programming, including the Numerical Recipes On-Line Software Store, free upgrades and bug fixes, and the complete books on-line in PostScript and Acrobat formats. The Numerical Recipes code ...

Quadrature, FFT (1D & 2D), Bessel functions, and GAMERF (gamma and error functions, including quadruple precision).

Has examples of Fortran codes using the Message-Passing Interface (MPI).

Fortran 90 module to perform am n-dimensional optimal interpolation (OI). The optimal interpolation allows one to interpolate arbitrarily located observations to a regular grid using a background field as first guess.

Public domain package by Michel Olagnon of general and specialized sorting and ranking routines in Fortran 90. Specialized routines include partial sorts, partial ranks, unique sorts, unique ranks, partial and unique sorts, as well as partial and uniq...

By Professor Kevin D. Jones of the U.S. Naval Postgraduate School.

Fortran and C codes by Dong Liang.

Subroutines for control theory, calculating eigenvalues of Hamiltonian matrices, packing and unpacking symmetric or triangular matrices, and examples of discrete- and continuous-time algebraic Riccati equations.

A coupled system of climate components for Earth, Mars and Titan developed at the University of Hamburg. Includes Fortran 90 source code, papers, images, and a forum.