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SemiCRC - A fast CRC-like algorithm
[ All Languages » VB »  Arrays]

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Click here to copy the following block
' Evaluate the 16-bit Checksum of an array of bytes

Function SemiCRC(bSource() As Byte) As Long
  Dim lngCRC As Long
  Dim lngTemp As Long
  Dim lngSize As Long
  Dim I As Long

  Const divisor As Long = 32768

  lngSize = UBound(bSource())

  For I = 0 To lngSize
    lngTemp = 0
    If lngCRC \ divisor Then lngTemp = 1
    lngCRC = (((lngCRC * 2) And &HFFFF&) + lngTemp) Xor CLng(bSource(I))
  Next

  SemiCRC = lngCRC
End Function


Submitted By : Nayan Patel  (Member Since : 5/26/2004 12:23:06 PM)

Job Description : He is the moderator of this site and currently working as an independent consultant. He works with VB.net/ASP.net, SQL Server and other MS technologies. He is MCSD.net, MCDBA and MCSE. In his free time he likes to watch funny movies and doing oil painting.
View all (893) submissions by this author  (Birth Date : 7/14/1981 )


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