[libre-riscv-dev] fp special functions
programmerjake at gmail.com
Mon Aug 5 05:17:55 BST 2019
On Sun, Aug 4, 2019, 21:15 Hendrik Boom <hendrik at topoi.pooq.com> wrote:
> On Mon, Aug 05, 2019 at 04:49:13AM +0100, Luke Kenneth Casson Leighton
> > am a fan of just saying "IEEE754" here. exact results. makes testing
> > easier, yes. my feeling is: if people *really want* inaccuracy, it
> > should be as a sub-extension.
> Amdahl's 360 clones did their operations lat-bit accurately. IBM's
> original didn't do them all correctly. Amdahl was forced by its
> customers to install a switch that would force the machine to produce
> the same wrong answer as IBM's.
neat. same reason intel/amd won't fix the x87 fsin/fcos/fsincos
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