[mercury-users] discriminated unions in c_code

[Michael Day]

> You could also export functions/predicates that do this, and call them
> from C (make their inputs simple types such as strings or ints).
>
> Otherwise you have to start to concern yourself with how the compiler
> will choose representations for the type.

Oh right. Sounds like exporting would be a nice solution. This means I
have to say will_call_mercury for the c_code predicates which call the
exported Mercury predicates, I assume.

Michael

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