Difference between revisions of "Signed"

Revision as of 19:33, 9 January 2008

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-When using the signed hexadecimal number system in programming (such as [[68000]] assembly), the values '''$80''' to '''$FF''' are interpreted as '''-$80''' to '''-$01''' respectively. This is because there is no way to literally prefix a number with the minus symbol "-". Instead, the highest [[bit]] in a byte is used to represent negativity.
+#REDIRECT [[Two's complement]]
-Conversely, the '''unsigned''' number system has no negatives. So '''$81''' is read simply as '''$81'''.
-[[Category: Hacking Information]]