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negative numbers

Hung Tang
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Joined: Feb 14, 2002
Posts: 148
How do you write a negative number in binary form? Say -1 is 11111111 but how?? What would be -125 in binary? And can anyone determine what 5>>38023 would be?
Thanks
Valentin Crettaz
Gold Digger
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Joined: Aug 26, 2001
Posts: 7610
Here is a good post dealing with that:
http://www.javaranch.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic&f=24&t=014657


SCJP 5, SCJD, SCBCD, SCWCD, SCDJWS, IBM XML
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Corey McGlone
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Joined: Dec 20, 2001
Posts: 3271
Originally posted by Hung Tang:
And can anyone determine what 5>>38023 would be?

Short answer, do a search for bit operations in the forum - you'll find a ton.
Slightly longer answer, when shifting by a value greater than the number of bits in the value you're shifting, take that value and mod it by the size of the value you're shifting.
For example:

Corey


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subject: negative numbers