internal number representation
10-05-2016, 06:25 AM
Post: #1
 retoa Member Posts: 168 Joined: Jan 2015
internal number representation
Hello all,

I still have some question about the internal representation of real numbers in the Prime.

there is (in BCD):

1 nibble for the sign (4 bits)
12 nibbles for the mantissa
3 nibbles for the signed exponent

How is the sign represented within the 4 sign bits? What can these 4 bits represent (+ infinity, -infinity, ...) and how will it be done?

How is the signed exponent represented within the 3 BCD nibbles? Is it shifted by 499, so -499 will be 000, 0 will be 499 and +499 will be 998?

Is it possible to have a detailed description of the significance of the various bits?

Is there a way to see the internal binary representation of a real number (something like casting a real to a longint)?

Thank you very much for the help, I want to explain it to my students, but I'm not sure about how it will be done and don't want to expose it wrong.

Reto
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 Messages In This Thread internal number representation - retoa - 10-05-2016 06:25 AM RE: internal number representation - Tim Wessman - 10-05-2016, 03:42 PM RE: internal number representation - retoa - 10-05-2016, 09:27 PM RE: internal number representation - David Hayden - 10-07-2016, 01:05 AM RE: internal number representation - retoa - 10-07-2016, 07:30 AM RE: internal number representation - jte - 10-08-2016, 08:37 PM RE: internal number representation - cyrille de brĂ©bisson - 10-10-2016, 10:05 AM

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