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From:	Hans-Bernhard Broeker <broeker AT physik DOT rwth-aachen DOT de>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: c and fortran
Date:	5 Mar 2005 12:11:16 GMT
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FloX <wosrediinanatour AT aon DOT at> wrote:
> hi!

> i want to call c functions from a fortran code. (i want to use fortran 
> code which calls allegro functions).

Getting that right in the general case is surprisingly tricky.  If you
can, I would suggest you try the cfortran.h interface header for this.

Fortran can't call the majority of C functions directly, because
Fortran is strictly pass-by-reference, C is strictly pass-by-value.
This means you need a huge collection of man-in-the-middle functions
to resolve such differences.  Writing all of those for an interface
the size and complexity of Allegro's would be a huge amount of work.

-- 
Hans-Bernhard Broeker (broeker AT physik DOT rwth-aachen DOT de)
Even if all the snow were burnt, ashes would remain.

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