Calling a C function that is referenced by a C pointer to that function with Haskell FFI

Calling a C function that is referenced by a C pointer to that function
with Haskell FFI

References

Reference NO 1

http://stackoverflow.com/questions/15203847/calling-a-c-function-that-is-referenced-by-a-c-pointer-to-that-function-with-has

Reference NO 2

http://stackoverflow.com/questions/6740850/call-c-functions-from-haskell-at-runtime

Reference NO 3

http://stackoverflow.com/questions/10900354/haskell-ffi-can-you-obtain-a-c-pointer-from-a-haskell-data-structure

Reference NO 4

http://stackoverflow.com/questions/9283528/ffi-haskell-callback-with-state

Reference NO 5

http://stackoverflow.com/questions/997738/haskell-ffi-calling-funptrs

Reference NO 6

#EANF#

Reference NO 7

#EANF#

Reference NO 8

#EANF#