Logical Bitwise Operators

The following logical operators perform bitwise manipulation on integer operands. For example, if the value stored in X (in binary) is 001101 and the value stored in y is 100001, the statement

assigns the value 101101 to z. Logical (Bitwise) Operators

assigns the value 101101 to z. Logical (Bitwise) Operators

Operator

Operation Operand Types

Result Type

Example

not

bitwise negation integer

integer

not X

and

bitwise and integer

integer

X and Y

or

bitwise or integer

integer

X or Y

xor

bitwise xor integer

integer

X xor Y

shl

bitwise shift left integer

integer

X shl 2

shr

bitwise shift rightinteger

integer

Y shr I

The following rules apply to bitwise operators.

  • The result of a not operation is of the same type as the operand.
  • If the operands of an and, or, or xor operation are both integers, the result is of the predefined integer type with the smallest range that includes all possible values of both types.
  • The operations x shl y and x shr y shift the value of x to the left or right by y bits, which (if x is an unsigned integer) is equivalent to multiplying or dividing x by 2Ay; the result is of the same type as x. For example, if n stores the value 01101 (decimal 13), then n sh 1 returns 11010 (decimal 26). Note that the value of y is interpreted modulo the size of the type of x. Thus for example, if x is an integer, x shl 4 0 is interpreted as x shl 8 because an integer is 32 bits and 40 mod 32 is 8.
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Project Management Made Easy

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