glen herrmannsfeldt wrote:
> robin wrote:
>> "John W. Kennedy" <jwkenne@[EMAIL PROTECTED]
> wrote in message
>> news:vYypf.39224$L7.37622@[EMAIL PROTECTED]
>
>>> The guard digit was added to double precision, postnormalization was
>>> added to the HER and HDR instructions, and the behavior of overflow
and
>>> underflow was altered.
>
>> The HE, HER, HD, HDR set was a glaring design error - a faux pas.
>> That it failed to post-normalise meant that it couldn't be used
>> in a loop to divide by, say, 32.
>
> Well, first there are no HE or HD instructions.
>
> I am pretty sure that HER and HDR will, and always have, done a
> one digit ****ft when needed. It might be that they won't normalize
> a previously unnormalized number, but in that rare case using AER
> or some other that will normalize should be fine.
Prior to 1967, they did not postnormalize.
--
John W. Kennedy
"But now is a new thing which is very old--
that the rich make themselves richer and not poorer,
which is the true Gospel, for the poor's sake."
-- Charles Williams. "Judgement at Chelmsford"
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