Bitwise union (or)

The bitwise union or produces a result by comparing all 64 bits of its left and right operands, which must be expressions of type integer, one bit at a time. For each bit in the two operands, the corresponding bit in the result value is set to 1 if either or both operands bit values is 1 and set to 0 if both operand bit values are 0.

Example

The following illustrates this using 64-bit binary values.

a := 42;

0000000000000000000000000000000000000000000000000000000000101010

b := 642;

0000000000000000000000000000000000000000000000000000001010000010

a or b

0000000000000000000000000000000000000000000000000000001010101010