Am 2017-04-06 um 09:08 schrieb Robin Vowels:
> From: [log in to unmask]
> Sent: Thursday, April 06, 2017 4:34 PM
>
>> I beg to differ: on the CDC, in the late 70s, Real was 60 bit.
>> According to my observation the 4-8-16 byte rule appeared later,
>> mainly with the PCs.
>> Not sure about the VAXes.
>
> The good old days I was referring to were the 1950s and 1960s.
>
The Mailüfterl (see
https://web.archive.org/web/20110821021232/http://www.museumonline.at/2000/wien-feuerbach/mailueft/mailueft_en.htm),
built in the 50s, an Austrian development, used 48-bit words.
>> Best wishes
again
>> Alois
>
>
> ------ Originalnachricht------
> Von: Robin Vowels
> Datum: Do., 6. Apr. 2017 05:15
> An: [log in to unmask];
> Betreff:Re: REAL64 what is it good for!
>
>
> From: Clune, Thomas L. (GSFC-6101)Sent: Thursday, April 06, 2017 6:37 AM
>> In the good-old-days, DOUBLE PRECISION was often something like 128
>> bits (and definitely not > IEEE!).
>
> In the good old days before those good old days, DOUBLE PRECISION was
> 64 bits.
>
>> But that historic issue aside, using DOUBLE PRECISION is a real pain
>> if you want to change
>> to a different precision. The KIND mechanism will generally allow
>> us to at least control
>> the precision in a small number of “well chosen” spots in the code.
>
>
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