24 Sep
2008
24 Sep
'08
1:42 p.m.
Hello Roman, Wednesday, September 24, 2008, 2:04:38 PM, you wrote:
As I understand, there are two ways to do that. Either Haskell code is called from C, or C code is called for Haskell. So my questions are: 1. Are they both possible?
yes. "foreign export" exports Haskell functions to C world, foreign import does opposite
2. If yes, which is better performance-wise? (C function is performance-critical). If generated function is called many times, how big an overhead is going to be?
foreign import *unsafe* -fvia-C together with -O2 may improve speed of C function calls -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com