October 20, 1999 - The Bitwise Zero-Fill Right Shift Operator | WebReference

October 20, 1999 - The Bitwise Zero-Fill Right Shift Operator

Yehuda Shiran October 20, 1999
The Bitwise Zero-Fill Right Shift Operator
Tips: October 1999

Yehuda Shiran, Ph.D.
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The bitwise zero-fill right shift operator shifts the first operand the specified number of bits to the right. The first operand is a 4-byte integer to be shifted. The second operand specifies the number of bits to shift. All bits shifted out to the right are discarded. New bits coming in from the left are always 0s, regardless of the original number's sign. The result, therefore, is always positive. Let's do a simple calculation:

NameDecimalBinary
Op1-1711111111111111111111111111101111
Op1 >>> 3536870909 00011111111111111111111111111101