3.5. The CCall module

This module is deprecated. Use the Foreign Function Interface instead.

The CCall module defines the classes CCallable and CReturnable, along with instances for the primitive types (Int, Int#, Float, Float# etc.) GHC knows to import this module if you use _ccall_, but if you need to define your own instances of these classes, you will need to import CCall explicitly.

More information on how to use _ccall_ can be found in .