Performs a bit shifting operation.
BitShift ( value, shift )
| value | The number to be shifted. |
| shift | Number of bits to shift to the right (negative numbers shift left). |
Remember hex notation can be used for numbers.
Right shifts are equivalent to halving; left shifts to doubling.
BitAND, BitNOT, BitOR, BitRotate, BitXOR, Hex
#include <MsgBoxConstants.au3>
Example()
Func Example()
; Note: "b" is the symbol for byte.
; Assign a Local variable the bitwise left-shift operation of 2.
Local $iBitShift1 = BitShift(2, -1) ; 2 = 0010b left-shifted once -> 4 = 0100b
; Note: It is equivalent to do this: BitRotate(2, 1)
; Display the result.
MsgBox($MB_SYSTEMMODAL, "", $iBitShift1)
; Assign a Local variable the bitwise right-shift operation of 1.
Local $iBitShift2 = BitShift(1, 1) ; 1 = 0001b right-shifted once -> 0 = 0000b
; Display the result.
MsgBox($MB_SYSTEMMODAL, "", $iBitShift2)
; Assign a Local variable the bitwise left-shift operation of 14.
Local $iBitShift3 = BitShift(14, -2) ; 14 = 1110b left-shifted twice -> 56 = 0011 1000b
; Display the result.
MsgBox($MB_SYSTEMMODAL, "", $iBitShift3)
; Assign a Local variable the bitwise
Local $iBitShift4 = BitShift(1, -31)
;1 = 0001b right-shifted 31 times -> -2147483648 (32 bits) = 1000 0000 0000 0000 0000 0000 0000 0000b
;Note: in 2's-complement notation, the 32nd digit from the right has a negative sign.
; Display the result.
MsgBox($MB_SYSTEMMODAL, "", $iBitShift4)
EndFunc ;==>Example