by Imran Zaheer (2 Submissions)
Category: Math/Dates
Compatability: Visual Basic 4.0 (32-bit)
Difficulty: Unknown Difficulty
Originally Published: Wed 3rd October 2001
Date Added: Mon 8th February 2021
Rating: 
(1 Votes)
NumtoBytesEx: Convertes any unsinged Long or unsigned Double number into array of bytes.
VBcoders
' Author : Imran Zaheer
' Contact : [email protected]
' Date : March 2001
' Function BytesToNumEx : Convertes any unsinged Long or unsigned Double
' number into array of bytes
'
'
' Parameters :
' (All parameters are reuuired: No Optional)
' numValue : a number (unsinged long or unsinged double)
' retArray : a dynamic array of bytes, after execution of
' this procedure this array contains the resultant
' bytes
'
' Example :
' dim myArray() as byte
' dim i as Integer, lngVal as Long
' lngVal= 168735934
' Call NumToBytesEx(lngVal, myArray)
' For i = LBound(myArray) To UBound(myArray)
' MsgBox myArray(i)
' Next i
Sub NumToBytesEx(numValue As Double, retArray() As Byte)
Dim i As Integer
Dim lng256 As Double, loopEnd As Integer
Dim ByteArray() As Byte
Dim strTmp As String
Dim lngVal As Long, dblVal As Double
On Error Resume Next
lngVal = CLng(numValue)
If Err.Number <> 0 Then
On Error GoTo 0
On Error Resume Next
dblVal = CDbl(numValue)
If Err.Number <> 0 Then
MsgBox "The datatype could not be determined ...!", vbCritical
Exit Sub
Else
loopEnd = 8
End If
Else
loopEnd = 4
End If
On Error GoTo 0
lng256 = 256
lng256 = lng256 ^ (loopEnd - 1)
ReDim ByteArray(1 To loopEnd)
For i = 1 To loopEnd
ByteArray(i) = Fix(numValue / lng256)
numValue = numValue - (ByteArray(i) * lng256)
lng256 = lng256 / 256
Next i
retArray = ByteArray
End Sub
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