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From: glenn@suphys.physics.su.OZ.AU
Newsgroups: comp.lang.c,comp.lang.fortran
Subject: C interfacing with Fortran
Keywords: C, Fortran, interfacing
Message-ID: <1990Aug27.220828.9319@metro.ucc.su.OZ.AU>
Date: 27 Aug 90 22:08:28 GMT
Reply-To: glenn@suphys.physics.su.OZ.AU ()
Organization: School of Physics, Uni of Sydney, Australia.
Lines: 29

Hi,
	I'm trying to write a program which uses a 2-d array of structs to
represent a matrix of complex numbers: struct complex {double r; double i}.
The array is dynamically allocated as it can become rather large. I don't
want to do complex arithmetic in C (we don't have C++ :-)) so I thought I'd
use Fortran.

Problem: How does one pass a 2-d C array of structs to a Fortran subroutine?

I've managed to do it with a 1-d array, but our Manuals (SUN OS 4.1) say
nothing about 2-d arrays; that part seems to just be a copy (with minor changes)
of the version 7 UNIX manual.

Any example programs or pointers to good cross language references would be much
appreciated.

BTW I'm using f77 and cc (standard SUN C compiler).

			Thanks in advance,
				Glenn

glenn@qed.physics.su.oz.au


--
Glenn Geers                       | "So when it's over, we're back to people.
Department of Theoretical Physics |  Just to prove that human touch can have
The University of Sydney          |  no equal."
Sydney NSW 2006 Australia         |  - Basia Trzetrzelewska, 'Prime Time TV'