Bit operations
Individual bits have values 0 and 1
There are instructions to perform bit operations
Using 1 as true and 0 as false
I
1 and 1 = 1, or in C, 1 && 1 = 1
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1 and 0 = 0, or in C, 1 && 0 = 0
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1 or 0 = 1, or in C, 1 || 0 = 1
We are interested in operations on more bits
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10101000b & 11110000b = 10100000b
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10101000b | 00001010b = 10101010b
These are called “bit-wise” operations
We will not use bit operations on single bits, though we will test
individual bits
64 Bit Intel Assembly Language
c
2011 Ray Seyfarth
