[Haskell-cafe] FFI to double constants, printf

[Maurí­cio]

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