Message-ID: <Pine.GSO.4.31.0106210922090.11151-100000@auk.stats>
Date: 2001-06-21T08:25:51Z
From: Brian Ripley
Subject: FORTRAN charcter strings
In-Reply-To: <1010621085007.ZM40608@B6ori1>
On Thu, 21 Jun 2001, Thomas Dick wrote:
> Hello,
>
> I try to use a Windows DLL with FORTRAN routines in R. All routines work fine,
> except those which exchange a character variable with R.
>
> The documentation "Writing R Extensions" says it's compiler dependent whether
> character string exchange works with FORTRAN routines or not.
>
> Why doesn't it work with every compiler?
Why should it? Why should the designer of a Fortran compiler anticipate
that Thomas Dick would want to call subprograms from a C routine and pass
in C character strings, and then spend time writing code to meet his
wishes?
> Does anyone know a FORTRAN90 compiler for windows that works?
No. Not even the matching g77 works. *But* translation by f2c will work.
Otherwise write a wrapper in Fortran that avoids having to pass character
variables around.
--
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272860 (secr)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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