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@REPLYADDR Michael S <already5chosen@yahoo.com>
@REPLYTO 2:5075/128 Michael S
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On Saturday, September 23, 2023 at 11:59:35 PM UTC+3, John Levine wrote:
> According to Anton Ertl <
an...@mips.complang.tuwien.ac.at>:
> >John Levine <
jo...@taugh.com> writes:
> >>But on z/Series they do indeed have packed decimal vector instructions
> >>using the 128 bit vector registers as 31 digits and a sign. There is
> >>also decimal floating point
> >
> >Decimal floating-point hardware seems to be a marketing feature to me.
> >Is there any real-world application that uses that?
> My impression is that there aren`t a lot of people who want it, but
> for the ones who do, they want it very much to do their financial
> calculations.
>
> Like I said a few minutes ago, there are decimal financial formulae
> developed long ago for bond pricing and related time and interest
> calculations. Since there are literaly trillions of dollars of
> financial instruments priced and sold this way, I can see that for
> some customers it would be worth a lot to have decimal arithmetic that
> could implement this directly with well defined decimal rounding at
> each step to make it easier to write correct code.
> --
> Regards,
> John Levine,
jo...@taugh.com, Primary Perpetrator of "The Internet
for Dummies",
> Please consider the environment before reading this e-mail.
https://jl.ly
All easily done in sw with even more defined rounding semantics.
And considering how fast modern z CPUs are, they sure wouldn`t break
a sweet doing so.
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