Mainframe floating point math implementation.
charles.unix.pro at gmail.com
Sun Mar 27 21:43:00 CDT 2016
On Sun, Mar 13, 2016 at 1:39 PM, Charles Anthony <charles.unix.pro at gmail.com
> The Multics distribution includes ISOLTS, a surprisingly complete and
> pedantic processor test program.
> It is unhappy with our emulated floating point.
> I've abstracted the instruction out of the emulator and embedded it in a
> standalone test harness that runs the 47 tests.
> Any insights, suggestions for algorithms, reading material would be
> greatly appreciated.
After many helpful suggestions and analyses, the missing piece of the
rounding algorithim has been identified:
Only round if the mantissa was shifted more then 71 bits.
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