How come
E9EF - FDBA
is equal to
FFFF FFFF FFFF EC35?
Although according to this calculator answer is
-13CB
which is what I got when I solved question myself. I want to know how is
FFFF FFFF FFFF EC35
correct answer?
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user4913383
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Have you heard of twos complement – Ed Heal Feb 11 '17 at 08:16
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@EdHeal yes, can you please explain a bit? – user4913383 Feb 11 '17 at 08:17
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3Possible duplicate of [What is “2's Complement”?](http://stackoverflow.com/questions/1049722/what-is-2s-complement) – GSerg Feb 11 '17 at 08:17
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2Why not just google it? – Ed Heal Feb 11 '17 at 08:17
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Read this https://en.wikipedia.org/wiki/Two's_complement - a good explaination – Ed Heal Feb 11 '17 at 08:20
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@EdHeal which one of two is correct answer? – user4913383 Feb 11 '17 at 08:21
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2They are both correct – Ed Heal Feb 11 '17 at 08:21
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negative value in twos complement in hex is `0xFFFFFFFFFFFblablabla` as your calculator does not handle signs it considered the result to be positive .... – Spektre Feb 11 '17 at 11:28