Bitwise Operators

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Bitwise Operators

All of the following bitwise operators, except ~ , are binary operators:

~ is the unary operator and produces a value with each bit of the operand inverted.

& is AND and produces a value in which each bit is set to 1 only if both corresponding bits in the two operands are 1.

is OR and produces a value in which each bit is set to 1 if either, or both, corresponding bits of the two operands are 1.

^ is EXCLUSIVE OR and produces a value in which each bit is set to 1 only if one or the other (but not both) of the corresponding bits of the two operands is 1.

<< is left-shift and produces a value obtained by shifting the bits of the left-hand operand to the left by the number of places given by the right-hand operand. Vacated slots are filled with zeros.

>> is right-shift and produces a value obtained by shifting the bits of the left-hand operand to the right by the number of places given by the right-hand operand. For unsigned integers, the vacated slots are filled with zeros. The behavior for signed values is implementation dependent.

Examples

Suppose you have the following:

 int x = 2; int y = 3; 

Then x & y has the value 2 because only bit 1 is ON for both x and y . Also, y<<x has the value 12 because that is the value obtained when the bit pattern for 3 is shifted two bits to the left.

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