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dim a as long
Ôõô¶Ô a ½øÐÐÓÒÒÆÎ» 24?
Ôõô¶Ô a ½øÐÐÓÒÒÆÎ» 16?
Ôõô¶Ô a ½øÐÐÓÒÒÆÎ» 8?
Ôõô¶Ô a ½øÐÐÓÒÒÆÎ» 0?
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VB code:
'2.Âß¼ÓÒÒÆ
Public Function SHR(OPR As Byte, n As Integer) As Byte
Dim BD As Byte
Dim I As Integer
BD = OPR
For i = 1 To n - 1
BD = BD \ 2 'ÓÒÒÆ
Next i
CF = BD And 1 'ÅжÏD0λÊÇ·ñ½øÎ»
SHR = BD \ 2
End Function
VB code:
'3.ËãÊõÓÒÒÆ
Public Function SAR(OPR As Byte, n As Integer) As Byte
Dim BD As Byte
Dim I As Integer
Dim Fg1 As Byte
BD = OPR
Fg1 = BD And &H80
For i = 1 To n - 1
BD = BD \ 2 'ÓÒÒÆ
Next i
CF = BD And 1 'ÅжÏD0λÊÇ·ñ½øÎ»
BD = BD \ 2 'ÓÒÒÆ
SAR = BD Or Fg1
End Function
VB code:
'5.Ñ»·ÓÒÒÆ
Public Function ROR(OPR As Byte, n As Integer) As Byte
Dim BD As Byte
Dim I As Integer
Dim Fg1 As Byte
Dim Fg2 As Byte
BD = OPR
For i = 1 To n
Fg1 = (BD And 1) * 128 'ÅжÏD0λÊÇ·ñ½øÎ»
BD = (BD \ 2) Or Fg1 '´ø½øÎ»ÓÒÒÆ
Next i
CF = Fg1
ROR = BD
End Function
VB code
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