[Numpy-discussion] Does float16 exist?

Charles R Harris charlesr.harris@gmail....
Tue Jan 8 17:03:21 CST 2008

On Jan 8, 2008 1:58 PM, Bill Baxter <wbaxter@gmail.com> wrote:

> If you're really going to try to do it, Charles, there's an
> implementation of float16 in the OpenEXR toolkit.
> http://www.openexr.com/
> Or more precisely it's in the files in the Half/ directory of this:
> http://download.savannah.nongnu.org/releases/openexr/ilmbase-1.0.1.tar.gz
> I don't know if it's IEEE conformant or not (especially w.r.t. NaN's
> and such) but it should be a good start.  The code seems to be well
> documented.

The license looks good, essentially BSD. The code is all C++, which is the
obvious way to go for this sort of thing, and I would like to stick with it,
but that could lead to build/compatibility problems. I think NumPy itself
should really be in C++.  Maybe scons can help with the build.

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