[Ncep.list.nems.announce] Birth Announcement: Fortran 2018

[Samuel Trahan - NOAA Affiliate]

Hello all,

Welcome to the world of Fortran 2018!  Released December 2, 2018 as ISO/IEC
1539:2018, this eleventh version of the Fortran standard is considered a
minor revision of Fortran 2008. It provides significant improvements to C
interoperability and coarray functionality, as well as many other
improvements and clarifications.  You'll be happy to hear that fixed-form
Fortran is still supported, computed GOTO is still allowed, and COMMON
blocks are accepted.  They are all labelled "obsolescent" in the Fortran
2018 standard, so don't count on them being around in Fortran 2056.
Unfortunately, all of your DO loops have to have END statements now.
(Sorry.)

Example code that takes advantage of new features of Fortran 2018 can be
found here:

    https://github.com/scivision/fortran2018-examples

The full standard document, if you have about $200 handy, can be obtained
here:

    https://www.iso.org/standard/72320.html

For a bit cheaper ($0), you can get the final draft:


http://isotc.iso.org/livelink/livelink?func=ll&objId=19442438&objAction=Open

A summary of changes, based on an April draft version of Fortran 2018, is
here:


https://isotc.iso.org/livelink/livelink?func=ll&objId=19441669&objAction=Open

Because Fortran 2018 is a minor revision of Fortran 2008, compilers with
good Fortran 2008 support already support parts of Fortran 2018:

    http://fortranwiki.org/fortran/show/Compiler+Support+for+Modern+Fortran

Sixty-one years and still going strong.

Sincerely,
Sam Trahan
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