On Fri, 17 May 2019 21:06:14 +0200 Rhialto <rhia...@falu.nl> wrote: > On Fri 17 May 2019 at 17:37:45 +0100, Sad Clouds wrote: > > 1. Make sure software always built to use IEEE 754 format. > > For VAX, you would need to do some work there, since it natively uses > a different floating point format. It is the canonical example for > that, these days :-) I'm not up to date on whether there are math > libraries available that do ise IEEE soft-float.
OK thanks for the info, I found some useful links on VAX: https://www.cv.nrao.edu/fits/os-support/vms/ieee2vax.c http://home.fnal.gov/~yang/Notes/ieee_vs_dec_float.txt However I don't think I'm going to bother supporting it, architectures like VAX are probably confined to museums and hobbyist's sheds. From what I can see most of the modern hardware use 2's complement integer arithmetic and IEEE 754 floating point, but not sure if there are any specific exceptions I'm not aware of.
