GMP division plans (Torbjorn Granlund)
mathimagics at yahoo.co.uk
Sun Apr 9 13:47:49 CEST 2006
> They *are* really extending the IEEE standard
> to include decimal floating point (principally
> intended for hardware implementation).
The wonderful B5000/6000/7000 stack-architecture
mainframes had hardware-assisted BCD arithmetic, I
believe. Not that I ever used it myself, but I assume
it was originally intended to give native data-type
support for COBOL users (999999v9999 and all that).
I found an interesting bibliography of historical
documents regarding floating-point decimal
implementations and standards here:
Sure enough, there's an entry in there for the
original B5500 Systems reference Manual (1964).
Lots of other interesting stuff in there too -
including ANSI and IEEE involvement ...
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