Currently, bytes defines functions to convert from floating-point values to word values (and vice versa) in i2d.c. However, in base-4.10.0.0 (GHC 8.2) and later, the GHC.Float module offers equivalent functionality in the castDoubleToWord64 function, as well as its cohorts. As far as I can tell, these functions are bit-for-bit compatible, although I'd have to stare at the corresponding Cmm code to know for sure.
Currently,
bytesdefines functions to convert from floating-point values to word values (and vice versa) ini2d.c. However, inbase-4.10.0.0(GHC 8.2) and later, theGHC.Floatmodule offers equivalent functionality in thecastDoubleToWord64function, as well as its cohorts. As far as I can tell, these functions are bit-for-bit compatible, although I'd have to stare at the corresponding Cmm code to know for sure.If we used the
GHC.Floatfunctions instead, we would no longer need to link against C code on recent versions of GHC. This has come up elsewhere in https://github.com/ekmett/bits/pull/7#issuecomment-962594421.