Code from the book "Fortran Programs for Scientists and Engineers", 2nd. ed. (1988).

Codes by Julio F. Fernández for uniform and Gaussian random number generation, matrix diagonalization, and physical simulations.

Codes from book by Robin Vowels for sorting, linked lists and trees, complex arithmetic, text processing, solving linear equations, graphics, searching, numerical methods, and whole array operations.

Fortran and C code from book by Singiresu Rao.

Fortran 90 code by Abraham Agay.

By Edward D. Throm, contains routines to provide a wide range of interfaces to the thermodynamic and transport properties.?[Commercial]

Given code as input, it generates code for derivatives including gradients and hessians.

3-D Computational Fluid Dynamics code using the SOR method. There is a link to CPU times on various platforms, for two grid sizes.

Codes to time floating point and integer arithmetic, intrinsic functions, and random access to memory.

Derivatives of the Incomplete Beta Function, by Robert J. Boik and James F. Robison-Cox.

Code for boundary integral equations, by Kendall E. Atkinson.

Space-time finite element solution for the 1-D Euler equations, STARS orientation angles calculator and elastics vector generator, simulation of a double wedge in a supersonic flow, atmospheric look-up tables, NACA 4-Digit Airfoil, and 2-D aerodynamic loads.

Computational fluid dynamics Fortran 77 code associated with "Computational Gasdynamics", a book by Culbert B. Laney.

Chksys.f determines the properties of the run-time environment for Fortran 77 programs. Chkcomp.f is a Fortran 77 code containing deliberate deviations from the standard and deliberate bad statements for testing the compiler's accuracy. Chksysff.f90 is a program to determine the properties of the run-time environment for Fortran 90 programs. Chkcomff.f90 is a Fortran 90 source file containing deliberate deviations from the standard and deliberate bad statements for testing the compiler's accuracy.

Fortran 77 code to simulate weather, with associated data files.

Links to chemistry, physics, and engineering codes, many in Fortran.

Generation of subsets and permutations, Hamiltonian cycles, determinants and permanents, network flow, and minimum spanning trees.

Fortran 77/90/95 codes to test run-time diagnostic/debug capability of Windows and Linux Fortran Compilers, by Arnaud Desitter and Herman D. Knoble.

Code from the book, translated to ELF, a Fortran 90 subset. Algorithms for calculations in science and engineering, including linear equations, spline interpolation, integration, differential equations, zero finding, minimization and singular value decomposition.

Fortran Portability Project, Fortran 2003 examples, and Fortran modules.

Fortran 90 codes to integrate Ito stochastic differential equations, generate random numbers, compute the FFT, and time programs.

Codes for a number-crunching benchmark, reading Internet URL addresses, and partially convertng C code to Fortran 90.

Code by Kevin Rhoads to allow precision to be deliberately thrown away in an IEEE floating point compliant computing environment in order to more closely model computations in less precise floating point systems.

Develops a vectorial graphical library in DXF (Drawing Interchange Format) format for Fortran 90 programmers. By Carlos Silva and Davide Santos.

Random generator networks and other algorithms.

Fortran 90 codes from introductory course by John Mahaffy.

Factorial function, iterative computation of the square root, nonadvancing I/O, dynamic arrays, Towers of Hanoi, and other topics.

Implements the draft F2K standard for accessing the command line and arguments. Site answers questions and lists supported compilers and platforms.

Interface for OpenGL and GLUT. By William Mitchell.

By Steve Sheng -- further details can be found in his dissertation.

By Rick Ottolini, based on an article by Gilbert Strang.

Fortran 90 code by Jacques Laminie.

NCSE Numerical Methods Library, FDLIB Fluid Dynamics Library, CFDLAB Computational Fluid Dynamics Laboratory, and BEMLIB Boundary-Element Software Library by C. Pozrikidis, Professor of Fluid Mechanics.

Programs by Niklaus Zimmermann for climate data analysis, moving window regression, soil profile analysis, and testing predictive (simulated) maps.

Programs by John A. Strain to count zeros of the zeta function, compute the Fast Gauss Transform, and use spectral methods to solve nonlinear parabolic systems.

Translations of Fortran 77 packages Lapack, Linpack, Eispack, Quadpack, and others. Code for graphics, finite elements, random number generation, and other topics.

Has short, concise examples of specific features of the Fortran 90, 95 or 2003 language.

Fortran sources, including Function Parser, that caches functions (for repetitive calling) and compiles functions to a byte-code representation to speed repeated evaluations. By Stuart Midgley.

Fortran 77 CGI examples using GET and POST.

Fortran 77 codes by Daniel Powers for optimization and statistics.

Gary Scott's extensive collection of source code links.

Windows 95/98/NT/2000 applications programming in FORTRAN, by Vladimir V. Vasilchenko. Numerous samples of GUIs, using controls and common controls.

A collection of links provided by a vendor of Fortran compilers.

Keyed file shareware in Fortran 90 and 77, Fortran 90 interface to the X Window system.

Dcl2inc postprocesses ftnchek .dcl files to create separate include files; dtosstod converts Fortran floating-point precision; fpp is a reversible Fortran preprocessor; lprsf3 is a filter to print Fortran and SFTRAN3 files with boldface keywords; and pretty is a Fortran 66 prettyprinter.

Product of the NIST Information Technology Laboratory (ITL). It is used to determine, insofar as is practical, the degree to which a Fortran processor conforms to FIPS Fortran.

A collection of useful links from the Fortran Market.

Fortran and C codes for fast matrix multiplication and multigrid solution of PDEs.

Fortran 90 codes from book by Lawrence Shampine, Richard Allen, and Steven Pruess.

Library by David W. Pierce that allows calls to the XDR (eXternal Data Representation) routines from Fortran.

Demonstrates handling of floating point exceptions under g77/i386/Linux. By Tom Crane.

Guide to mathematical software in Fortran held at a small number of US government establishments. Some sources are in commercial libraries and are not directly accessible. The code is of a uniformly high quality but usually old; there may be more recent and better algorithms available.

Fortran 90 code for Gauss-Legendre and Gaussian quadrature, and solving linear equations by Gauss and Gauss-Jordan elimination, LU and Singular Value Decomposition.

Packages to handle binary unpacking and packing, in Fortran 77 and 90.

Package for curvilinear orthogonal grid generation, which creates an orthogonal grid when provided with boundary information.

Sourcecode of programs, mostly of a tutorial nature.

Example of simple program in Fortran.

Fortran 90 code to solve the Diffusion-Advection-Reaction equation in 2D.

Fortran 77 and 90 codes.

Links to fragments, which are very short codes or code fragments to demonstrate the language features and constructs, kernels, which are short self-contained codes chosen as representative of particular application algorithms and their language feature requirements, and full applications codes, not necessarily stored in full locally, but registered here with relevant pointers given to the code owner/contact person.

Suite of Fortran 90 subroutines by Layne T. Watson for solving nonlinear systems of equations by homotopy methods. There are subroutines for fixed point, zero finding, and general homotopy curve tracking problems, utilizing both dense and sparse Jacobian matrices, and implementing three different algorithms: ODE-based, normal flow, and augmented Jacobian.

Fortran 90 code of Jos Claerbout.

Fortran 90 module by Andy Stone that parses input lines into 'words', and routines that read a 'word' and translate it into a specified form, usually an integer or double-precision number. In conjunction with a simple CASE structure this provides a powerful and flexible method for organising data input. The package includes documentation, and an example program and data file as illustrations of the ways in which the module can be used to organise data. [gzipped tar file].

Code from the book by Ian Chivers and Jane Sleightholme.

Examples of the F (Fortran 95 subset) language, by Harvey Gould.

Fortran and C codes in gzipped tar file from book by Brigitte Lucquin and Olivier Pironneau.

Fortran 77 module to automatically assign i/o unit numbers, by Judah Milgram.

Implemented in the F subset by Rich Townsend.

Code for the VMS operating system and for a fractal figure called Sierpinski's Gasket.

Conversion to and from Julian dates, day-of-week and other date calculations, plus historical information. See also datesub.f90 at http://users.bigpond.net.au/amiller/

Contains three different Jet Propulsion Laboratory Planetary and Lunar Ephemerides (DE200, DE405, and DE406) along with associated reading and interpolating routines, allowing the user to obtain the rectangular coordinates of the sun, moon, and nine major planets by means of a subroutine written in standard Fortran.

XFT (eXtended Fortran Types) is a set of Fortran modules which wrap some Win32 APIs, the Dialog Management section has an enhanced DFLOGM module from CVF 6 and the Win32 Headers section has translations of some C header files that were not (yet?) incorporated in CVF.

Fortran 90 codes to solve ordinary and partial differential equations, tridiagonal linear systems and to simulate some problems involving lakes and rivers.

Fortran 90 program by Werner W. Schultz that checks for the available KIND parameters available for a given Fortran 90 or 95 compiler. It prints into a file a new Fortran program that can be compiled to write into a unit the various parameters that describe each integer/real representation.

Fortran codes for various tasks.

Fortran 90 code by Chad M. Schafer to numerically approximate the least favorable alternative (LFA) and least regrettable alternative (LRA). These define the minimax expected size and minimax regret confidence procedures, respectively.

SPARSEM is a collection of sparse matrix classes that makes programming with sparse matrices (and large problems) almost as easy as a matrix language. BLUPF90 is a BLUP program written using SPARSEM. REMLF90 is a REML version of BLUPF90 that uses accelerated EM algorithm. Other programs included are dense matrix module DENSEOP, Gibbs sampling program GIBBS90, and several versions of linear-threshold models. By Ignacy Misztal and collaborators.

An old but dependable library of Fortran 77 code which includes approximation, ODE/PDE solution, linear algebra, optimization, quadrature, root finding, special functions and FFTs. You must agree to single-user licence conditions before downloading a gzipped tar file (1Mb).

Fortran 90 code for the Cox-Ross-Rubinstein binomial model, the analytic Black-Scholes formula, and Monte Carlo Simulation.

Fortran 90 test program by Arjen Markus to see if memory leaks originating from derived-types can be circumvented.

Code to predict a property (P2) of dimension lumber at a target moisture content (MC2) given the value of the property (P1) at an initial moisture content (MC1).

Package of MATLAB-style-callable routines for plain graphics by Valery E.Grikurov, Professor of Mathematics and Mathematical Physics. RGB color scheme is used (TrueColor mode supported).

Codes by Professor Zvi Drezner.

Set of eight programs designed to help evaluate the performance of parallel supercomputers. The benchmarks, which are derived from computational fluid dynamics (CFD) applications, consist of five kernels and three pseudo-applications.

Tool by Patrick Jöckel for data transfer of gridded 2- and 3-dimensional (spatial) geophysical/geochemical scalar fields between grids of different resolutions. The algorithm handles data on rectangular latitude/longitude grids (not necessarily evenly spaced) and vertical pressure hybrid grids of arbitrary resolution. The input/output data format is netCDF.

Codes for ANSI control sequences, solving linear equations, and creating Poscript graphics.

NSWC (Naval Surface Warfare Center) Library of Mathematics Subroutines written in Fortran 66. Old but very high quality code. Unfortunately the manual is only available in hard copy, and is very difficult to obtain. The source code is also available by ftp from: ftp://math.jpl.nasa.gov/pub/nswc.93

Codes for the book by Richard L. Burden and J. Douglas Faires.

By Jean-Pierre Moreau.

Code in Fortran, C, and Basic.

Fortran 90 codes for a course.

Code for algebraic and transcendental equations, systems of linear equations, interpolation routines, numerical integration, eigenvalues, and special functions, by Abdusamad Salih.

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 in Fortran 77 and Fortran 90 is not in the public domain.

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

Codes by Richard Brent for multiple precision arithmetic, uniform and normal random number generators, irreducible/primitive trinomials, and parallel sorting.

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

Two simple examples of Fortran 77 and 90 programs using the OpenMP API for shared-memory parallel programming.

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 unique ranks.

OS Command line interface utility for Compaq/Intel Visual Fortran with immediate return or wait specified in milliseconds (routine automatically quotes the command string).

Includes updates of some TOMS algorithms, logistic regression, a Fortran 90 version of the special functions from the NSWC (Naval Surface Warfare Center) Math. Library, quadruple precision using 10-byte reals for the NAS Fortran-Plus compiler giving about 38 decimal digit accuracy, and code for Imagine1's F compiler, including the author's least-squares package. F code should compile using any standard Fortran compiler.

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

High performance, scalable, parallel, MPI-based library, intended for solving linear systems of equations involving sparse symmetric positive definite matrices. The library provides various interfaces to solve the system using four phases of direct method of solution: compute fill-reducing ordering, perform symbolic factorization, compute numerical factorization, and solve triangular systems of equations.

Fortran and C codes by Dong Liang.

SLICOT Subroutine Library in Control Theory, Parallel Library in Control (PLiC) for large-scale time-invariant linear control systems in state-space form on parallel distributed computers, eigenvalues of Hamiltonian Matrices, subroutines for compressing a symmetric or triangular matrix to packed storage mode or to unpack a packed array to full storage mode, benchmark examples of discrete-time algebraic Riccati equations, benchmark examples of continuous-time algebraic Riccati equations.

Mainly non-numeric library for handling text, including parsing, accessing the command line, dates and times, and some random number generation.

Collection of Fortran 77 routines that address many traditional areas of mathematical software, including approximation, ordinary and partial differential equations, linear algebra and eigensystems, optimization, quadrature, root finding, special functions, and Fourier transforms, but excluding statistical calculations. PORT stands for Portable, Outstanding, Reliable, and Tested.

Code from the book by Carl de Boor.

Counts prime numbers.

Generators for linear ordering and clustering problems, by John E. Mitchell.

Code for solving implicit differential equations on shared memory parallel computers, by Jacques J.B. de Swart, Walter M. Lioen, and Wolter A. van der Veen.

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

Programs for aeronautical engineering, many from NASA or USAF, complete with public domain source code, instructions and sample cases on CD-ROM. [Commercial]

Shareware by Stephen Kirkup.

Plotxy allows the user, either interactively at the terminal, or though scripts, to create simple graphs in the x-y plane. It gives the user complete of control of many aspects of the graph (eg, picture size, text font, line weight, math and Greek symbols, color palette specification). Color produces contour diagrams, with Contour producing a B/W equivalent. Magmap maps magnetic field components using spherical harmonic representations. PSD estimates the Power Spectral Density of a time series. Cross calculates frequency domain functions from a pair of input time series.

Another parser of Fortran code.

Code estimates the population rule learning model on experimental data.

Code for partial differential equations, quadrature, and the solution of linear systems, with associated papers.

Easy Inter-Process Shared Memory Communication Utilities for Win32 using a simple Fortran 77-style interface. Written for Compaq Visual Fortran by Gary Scott.

Bvls.f solves least-squares problems with bounds on the variables. Qr.f computes QR decompositions in a stable way. Sbl1.f finds bounds on linear functionals of an n-vector subject to an l1 constraint on the misfit to a set of linear relations, and linear inequality constraints on the variables. Sbvq.f finds bounds on linear functionals of an n-vector subject to a quadratic constraint on the misfit to a set of linear relations, and linear inequality constraints on the variables.

Fortran 77 codes to solve the quadratic equation, solve a nonlinear equation using the Newton-Raphson method, fit a simple linear regression, and solve a system of equations using Gaussian elimination.

Routines to accompany the book "Computation of Special Functions", by Shanjie Zhang and Jianming Jin.

Astronomy software, much in Fortran.

Fast Fourier Transforms and Silicon interatomic potentials.

Fortran 90 module, by William Mitchell, for measuring execution time of program segments. It is designed to be a portable, easy-to-use means of measuring execution time.

Geometric Software ? (by Kokichi Sugihara) for Voronoi diagrams in 2D and 3D, and convex hulls in 3D and 4D.

Fortran 77 time-domain computer code to model axisymmetric sound beams in fluids. The code is based on an augmented KZK equation that accounts for nonlinearity, diffraction, thermoviscous absorption, and absorption and dispersion due to an arbitrary number of relaxation phenomena.

Manuals and Fortran source codes for the solution of Laplace, Helmholtz and acoustics problems by the boundary element method.

By Richard Blender.

Code by J. L. Herring for transmission line modelling of electromagnetic fields in 3-dimensions using the symmetrical condensed node.

Fortran 77 string tokenizer, similar to the C function.

Directory of links to numerical analysis sites, many of which contain software.

Implements linkage disequilibrium mapping techniques.

Compression tool tailored for fields where node-to-node variations are small, and where undefined (dry) nodes are abundant.

Fortran 90 code by Michel Olagnon: pre-processor and pretty-printer, with command-line interface for Unix, fsplit utility for splitting large files into separate ones for each procedure, PostScript converter, interface bloc generator, and format creator for numeric strings.

By F. Schreier.

Code to accompany book by Christopher Torrence and Gilbert P. Compo.

Fortran 77 code to compute the day of the week of a date using the Zeller congruence algorithm.

Fortran 77 code by Clive Page to do wild-card matching to a pattern, which may contain "?" to match any single character, and "*" to match zero or more consecutive characters of any type.

Module by Mart Rentmeester that reads and interprets XML in standard Fortran 95. Also at the site is code for varying length strings, the complementary error function, an interface to the GD Graphics Library, and nucleon-nucleon potential models.

Aims to be a library that allows programmers to access XML files.

Written by Alberto Garcia in the F subset of Fortran 95, freely available under the BSD license.