[mercury-users] passing self defined types from C to mercury

Fergus Henderson fjh at cs.mu.OZ.AU
Wed Mar 26 01:44:27 AEDT 2003

On 25-Mar-2003, Pieter Laeremans <pieter.laeremans at student.kuleuven.ac.be> wrote:
> Something isn't clear to me about passing a self defined type from a
> mercury predicate implemented in C  to Mercury itself.
> Is there some way I can acces the type constructor of
> self defined types from within the C-code or do I have to write helper
> predicates to do that ?

The latter -- you need to write helper predicates (or functions) in Mercury
and export them to C using `pragma export'.

Fergus Henderson <fjh at cs.mu.oz.au>  |  "I have always known that the pursuit
The University of Melbourne         |  of excellence is a lethal habit"
WWW: <http://www.cs.mu.oz.au/~fjh>  |     -- the last words of T. S. Garp.
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