VB.Net Tutorial/Data Type/Bit
Версия от 16:40, 26 мая 2010; (обсуждение)
Bit Shift left and right
public class Test
public Shared Sub Main
"&HFF = the hex value FF, which equals 255, and
"1111 1111 in binary
Dim numberToBeShifted As Integer = &HFF
numberToBeShifted = numberToBeShifted << 4
Console.WriteLine(numberToBeShifted)
numberToBeShifted >>= 2
Console.WriteLine(numberToBeShifted)
End Sub
End class
4080 1020
Sign Bit
Option Strict On
Public Module SignBit
Public Sub Main()
Dim negValue As Integer = -1024
" Save state of sign bit
Dim signBit As Integer = negValue And &H80000000
negValue = negValue << 2
" Clear sign bit
negValue = negValue And &H7FFFFFFF
" Restore sign bit
negValue = negValue Or signBit
Console.WriteLine("Value after shift operation: {0}", negValue)
End Sub
End Module
Value after shift operation: -4096