December 2013
Beginner
576 pages
16h 4m
English
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The Left-Shift Operator
When a left-shift operation is performed on a value, the bits contained in the value are literally shifted to the left. Associated with this operation is the number of places (bits) that the value is to be shifted. Bits that are shifted out through the high-order bit of the data item are lost, and 0s are always shifted in through the low-order bit of the value. So, if w1 is equal to 3, the expression
w1 = w1 << 1;
which can also be expressed as
w1 <<= 1;
results in 3 being shifted one place to the left, which will result in 6 being assigned to w1:
w1 ... 0000 0011 0x03w1 << 1 ... 0000 0110 0x06
The operand on the left of the << operator is the value to be shifted, whereas the ...
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