Welcome to the October 2021 edition of the monthly Fortran newsletter.
The newsletter comes out at the beginning of every month and details
Fortran news from the previous month.
fortran-lang.org
This month we’ve had several updates to the website:
#329 (WIP):
Quantum Information book, WSL GUI, and typos
#201 (WIP):
Draft: Internationalization for fortran-lang
Let us know
if you have any suggestions for the website and its content.
We welcome any new contributors to the website and the tutorials page in particular - see the
contributor guide
for how to get started.
The candidate for file system operations to be included in stdlib is being developed by
@MarDiehl and @arjenmarkus
in this repository.
Please try it out and let us know how it works, if there are any issues, or if the API can be improved.
fpm is still in early development and we need as much help as we can get.
Here’s how you can help today:
Use it and let us know what you think! Read the fpm packaging guide
to learn how to build your package with fpm, and the manifest reference
to learn what are all the things that you can specify in the fpm.toml file.
Browse the open issues and see if you can help implement any fixes or features.
Adapt your Fortran package for fpm and submit it to the Registry.
Improve the documentation.
The short-term goal of fpm is to make development and installation of Fortran packages with dependencies easier.
Its long term goal is to build a rich and decentralized ecosystem of Fortran packages and create a healthy
environment in which new open source Fortran projects are created and published with ease.
Compilers
Flang
Recent development updates:
New Driver and CMake integration:
flang-omp-report plugin - first full fledged frontend plugin has been contributed
CMake integration - waiting on a new PR
Code-generation work is ongoing - task list has been presented to the community for discussion and approval
FIR (Fortran IR - a dialect of MLIR):
Fortran 95 lowering and runtime support is nearing completion
Code upstreaming has begun again
OpenMP
Merged: Critical, collapse clause, Fixes for SNAP.
In review: Firstprivate, Ordered, MLIR definitions for a few target side constructs, semantic checks for atomic, critical, sections, simd
OpenMP 5.0 metadirective
Runtime
Change complex type define in runtime for clang-cl
Implement READ(SIZE=) and INQUIRE(IOLENGTH=) in runtime
GET_COMMAND_ARGUMENT runtime implementation, handling the LENGTH, VALUE, STATUS and ERRMSG parameters.
COMMAND_ARGUMENT_COUNT runtime implementation
Add POSIX implementation for SYSTEM_CLOCK
Fix WRITE after BACKSPACE on variable-length file
Implement Posix version of DATE_AND_TIME runtime
Ported test scripts to Python, enables testing on Windows
More precise checks for NULL() operands
Enforce array conformance in actual arguments to ELEMENTALs
Constant folding for COUNT, SQRT, HYPOT, CABS, CSHIFT, EOSHIFT, PACK, UNPACK, and TRANSPOSE
Make this_image() an intrinsic function
Revamp C1502 checking of END INTERFACE [generic-spec]
Accept SIZE(assumed-rank, DIM=n)
Validate SIZE(x,DIM=n) dimension for assumed-size array x
Catch errors with intrinsic array inquiry functions
Correct overflow detection in folding of real->integer conversions
Upgrade warning to error in case of PURE procedure
Enforce fixed form rules about END continuation
Enforce specification function rules on callee, not call
Catch error: base of DATA statement object can’t be a pointer
Represent parentheses around derived types
Enforce constraint: defined ass’t in WHERE must be elemental
Catch branching into FORALL/WHERE constructs
Implement semantic checks for ELEMENTAL subprograms
Signal EOR in non advancing IO and move to next record
Extension: reduced scope for some implied DO loop indices
Take result length into account in ApplyElementwise folding
Apply double precision KindCode in specific proc interface
Call notes are recorded and available upon request here. Please contact Alexis Perry-Holby at aperry@lanl.gov for document access.
Interactive mode: get complex numbers, intrinsic functions working
(Windows, macOS, Linux)
New driver options: –fast, –symtab-only, –target
We are looking for new contributors. Please do not hesitate to contact us if
you are interested. We will help you get up to speed.
Events
We had our 16th Fortran Monthly call on September 22.
You can watch the recording below:
The second international Fortran Conference (FortranCon) 2021 was held virtually on September 23-24
Video recordings of the talks will be made available soon.
For more information, visit the FortranCon website.
As usual, subscribe to the mailing list and/or
join the Discourse to stay tuned with the future meetings.
Contributors
We thank everybody who contributed to fortran-lang in the past month by
commenting in any of these repositories:
Authors: Milan Curcic, Alexis Perry-Holby, Sebastian Ehlert, Ondřej Čertík
Welcome to the September 2021 edition of the monthly Fortran newsletter.
The newsletter comes out at the beginning of every month and details
Fortran news from the previous month.
Authors: Milan Curcic, Ondřej Čertík, Laurence Kedward
Welcome to the August 2021 edition of the monthly Fortran newsletter.
The newsletter comes out at the beginning of every month and details
Fortran news from the previous month.
Authors: Laurence Kedward, Sebastian Ehlert, Ondřej Čertík, Zachary Moon, Milan Curcic
Welcome to the July 2021 edition of the monthly Fortran newsletter.
The newsletter comes out at the beginning of every month and details
Fortran news from the previous month.
Authors: Sebastian Ehlert, Milan Curcic, Laurence Kedward, Ondřej Čertík
Welcome to the June 2021 edition of the monthly Fortran newsletter.
The newsletter comes out at the beginning of every month and details
Fortran news from the previous month.