[Haskell-cafe] FFI to double constants, printf

When we printf doubles from C (like when using hsc2hs to bind to a constant) we can get something that's not valid Haskell. See these 2 examples: 3.40282347e+38F inf Do you know some way to printf a double using printf (or any other standard function) that's always going to give me valid Haskell text, even in special cases? Thanks, Maurício