How to find out the C type signature corresponding to a Haskell function type in FFI?

Bulat Ziganshin bulat.ziganshin at
Thu Mar 9 11:39:01 EST 2006

Hello Simon,

Thursday, March 9, 2006, 5:08:09 PM, you wrote:

>>>for small "home" projects you can even use "Int" and "int" which
>>>would work in most of Haskell implementations

SM> Yes, and to give a concrete example:  HsInt and int are different types
SM> on x86_64 (and most other 64-bit C implementations).

yes, it's better to use "Int" and "long" types :)

Best regards,
 Bulat                            mailto:Bulat.Ziganshin at

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