RetroBBS - comp.lang.fortran - Re: Fortran 95 features in f90 files?

Fortran 95 features in f90 files?

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From: suzyw0ng@outlook.com (Woozy Song)
Newsgroups: comp.lang.fortran
Subject: Fortran 95 features in f90 files?
Date: Thu, 1 Jun 2023 11:26:39 +0800
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by: Woozy Song - Thu, 1 Jun 2023 03:26 UTC

I have been going through a package written about 20 years ago. The
documentation says Fortran 90, files have .f90 extensions and compiled
with mpif90 (which will be a wrapper to gfortran or Intel ifort).
In several places, it has
n=SIZE(array)
but SIZE is officially a Fortran 95 addition. So do compilers accept
this, or were they pushing their luck? Say if PGI or IBM compiler was
used, are you S.O.L.?

Re: Fortran 95 features in f90 files?

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From: sgk@REMOVEtroutmask.apl.washington.edu (Steven G. Kargl)
Newsgroups: comp.lang.fortran
Subject: Re: Fortran 95 features in f90 files?
Date: Thu, 1 Jun 2023 04:15:30 -0000 (UTC)
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by: Steven G. Kargl - Thu, 1 Jun 2023 04:15 UTC

On Thu, 01 Jun 2023 11:26:39 +0800, Woozy Song wrote:

> I have been going through a package written about 20 years ago. The
> documentation says Fortran 90, files have .f90 extensions and compiled
> with mpif90 (which will be a wrapper to gfortran or Intel ifort).
> In several places, it has
> n=SIZE(array)
> but SIZE is officially a Fortran 95 addition. So do compilers accept
> this, or were they pushing their luck? Say if PGI or IBM compiler was
> used, are you S.O.L.?

Yes, compilers will accept it. It is conventional to name
free-form source files with a .f90 extension. The f90
does not mean that it is strictly a Fortran 90 conforming
code. BTW, .f is the extension commonly used with
fixed-form source code.

--
steve

Re: Fortran 95 features in f90 files?

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From: steve@seesignature.invalid (Steve Lionel)
Newsgroups: comp.lang.fortran
Subject: Re: Fortran 95 features in f90 files?
Date: Thu, 1 Jun 2023 13:34:35 -0400
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by: Steve Lionel - Thu, 1 Jun 2023 17:34 UTC

On 5/31/2023 11:26 PM, Woozy Song wrote:
> I have been going through a package written about 20 years ago. The
> documentation says Fortran 90, files have .f90 extensions and compiled
> with mpif90 (which will be a wrapper to gfortran or Intel ifort).
> In several places, it has
> n=SIZE(array)
> but SIZE is officially a Fortran 95 addition. So do compilers accept
> this, or were they pushing their luck? Say if PGI or IBM compiler was
> used, are you S.O.L.?

You may find
https://stevelionel.com/drfortran/2013/01/11/doctor-fortran-in-source-form-just-wants-to-be-free/" rel="nofollow" target="_blank">https://stevelionel.com/drfortran/2013/01/11/doctor-fortran-in-source-form-just-wants-to-be-free/
to be useful reading.
--
Steve Lionel
ISO/IEC JTC1/SC22/WG5 (Fortran) Convenor
Retired Intel Fortran developer/support
Email: firstname at firstnamelastname dot com
Twitter: @DoctorFortran
LinkedIn: https://www.linkedin.com/in/stevelionel
Blog: https://stevelionel.com/drfortran
WG5: https://wg5-fortran.org

"Ada is PL/I trying to be Smalltalk. -- Codoso diBlini

devel / comp.lang.fortran / Re: Fortran 95 features in f90 files?

Subject	Author
Fortran 95 features in f90 files?	Woozy Song
Re: Fortran 95 features in f90 files?	Steven G. Kargl
Re: Fortran 95 features in f90 files?	Steve Lionel