index.md

Frequently Asked Questions About Fortran

Contents

• Gotchas:

  • Gotchas: Inheritance control for CONTAIN-ed procedures in Fortran
  • Gotchas: significant digits and simple assigns
  • [Gotchas: other assignment and initialization erros] (faq/assign_precision.md)
  • Gotchas: conformance and elemental functions
  • Gotchas: avoiding allocatables

• Arrays:

  • How do I initialize an array in row-column order in Fortran?

  • Trouble initializing character arrays in Fortran; or why

    character(len=*),parameter :: array(*)=['one','two','three']
    

    is an error

  • "array=[]" will not work in Fortran

  • How do I compare arrays in Fortran?

• Notes on compound Boolean expressions

• Procedure pointer

• How do I put block comments in Fortran source?

• How do I get a file size in Fortran?

• How to issue a command to the operating system

• Automatically indenting a Fortran file

• Build Tools

• Calling gnuplot(1) from Fortran

• Variable length CHARACTER arrays

• Notes on including metadata in programs, objects, and source

• Special values

I/O

• Creating sequentially numbered filenames
• Writing to stderr
• How does Fortran handle a scratch file?
• Non-advancing I/O
• Notes on list-directed output
• Leading space on list-directed output

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External Links

Fortran standard

The "web home" of ISO/IEC JTC1/SC22/WG5 (the international Fortran standards committee, or WG5 for short) is https://wg5-fortran.org/

The WG5 web site is where you'll find news about what's happening with the Fortran standard, and links to all WG5 documents. Information on current and past standards is also available there.

Live Fortran pages (Online Compilers)

• GodBolt compiler explorer
• fortran-lang "play"
• CodersEditor.com
• ideone.com
• JDoodle (compiler options)
• myCompiler.io
• onecompiler.com
• OnlineGDB
• rextester.com
• techiedelight.com
• TutorialsPoint (beautify)
• W3Schools

Fortran FAQs

• The Fortran Wiki FAQ
• The Fortran FAQ
• Fortran90.org FAQ
• pages.mtu.edu FAQ

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Fortran Compilers

• https://gcc.gnu.org/wiki/GFortran

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Repositories, Discussion Groups, Reference Sites, ...

• netlib mathematical algorithm repository
• The Fortran Wiki
• comp.lang.fortran newsgroup
• J3 Fortran Proposals
• GitHub site for Fortran feature proposals
• github list of open-source Fortran projects
• Fortran Wikibook

• Fortran Language Forum
• https://github.com/fortran-lang/fortran-lang.org
• Fortran Language Discourse
• Fortran Language Discourse YouTube
• Futility

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Fortran scientific model searches

XGC , SPECFEM , ACME , DIRAC , FLASH , GTC , LS-DALTON , NUCCOR , NWCHEM , RAPTOR , GAMESS(US) , GAMESS(UK) , Gaussian , VB2000 , XMVB , ACES , CFOUR , MOLPRO , MOLCAS ,

Economic Modeling

GEMPACK ,

Weather Modeling

WRF(Weather Research and Forecast),

Geography

geographiclib, fortranGIS,

Best Practices

• https://github.com/Fortran-FOSS-Programmers/BestPractices
• http:https://www.fortran.com/FortranStyle.pdf
• http:https://www.fortran90.org/src/best-practices.html
• http:https://research.metoffice.gov.uk/research/nwp/numerical/fortran90/f90standards.html
• https://github.com/szaghi/zen-of-fortran

Fortran document generators

fordocu , robodoc , ($)understand , doxygen ,

Repositories

• Trending Fortran on GitHub

Fortran and HPC searches

Fortran , Coarray , MPI , OpenMP , OpenACC , HDF5 , HPC , MPI-AMRVAC ,

Sites for gathering programming idioms and programming chrestomathy

• Rosetta Code (multi-lingual code samples)
• Fortran-specific Rosetta Code
• Exercism
• Programming-idioms
• codingame

Just found

• Simpson software
• The EDSS/Models-3 I/O API
• SimCom commericial services

Documentation

• lectures
• lectures<\a>

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Revised on Sat, Nov 18, 2017 6:28:56 PM by JSU{.existingWikiWord}