On 04/01/2015 12:31 AM, Mike Miller wrote: > It's an IEEE standard format: > > http://en.wikipedia.org/wiki/Half-precision_floating-point_format#IEEE_754_half-precision_binary_floating-point_format:_binary16 > > This is what I see: > >> writeBin(vec , con, size=2 ) > Error in writeBin(vec, con, size = 2) : size 2 is unknown on this machine > > I'm not sure what the machine has to do with it. It's really up to the > software, isn't it?
Yes, but R relies on the underlying C run-time library for a lot of things like this. On your platform, is there a C type corresponding to half precision? If so, let us know the details, and we'll possibly add it to writeBin. > > Is there a way to get R to read/write half-precision numbers (binary16)? If it's not supported by the C run-time library and has to be done entirely using other types, that's the sort of thing that belongs in a user-contributed package. I'm not aware of one that already has it, so you may have to write this yourself. Duncan Murdoch > > It isn't a big deal for me because unsigned 16-bit integers are working > well enough, but I'd like to have an answer for people who ask why I make > them divide by 1000 all the time. ;-) > > Mike > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.