Name
bit_shift — Returns the result of bitwise shift operation over two 32-bit integers.
Synopsis
bit_shift
(
|
in value integer , |
in
distance
integer
); |
Description
The function returns bitwise shift of two given integers. Depending on the arguments, the shift may be left or right. For right-shift, leftmost bits of the result are filled by the value of the 31-st bit.
On 64-bit platforms, both arguments are intentionally truncated to 32 bits and the shift is restricted to 32 bits to maintain compatibility.
Parameters
value
The value to be shifted.
distance
The sign of the parameter specifies the direction of the shift: positive values indicate shift to the left, negative values indicate shift to the right. The absolute value of the parameter specifies the number of bits to shift. The value of zero means that the result is equal to the value of the first argument.
Return Types
Integer.
Examples
Example 24.26. Bitwise-shifting
select bit_shift (18, 6); 1152 select bit_shift (-18, 6); -1152 select bit_shift (1152, -6); 18 select bit_shift (-1152, -6); -18