by TerranRiCH (5 Submissions)
Category: Math/Dates
Compatability: Visual Basic 5.0
Difficulty: Unknown Difficulty
Originally Published: Thu 26th July 2001
Date Added: Mon 8th February 2021
Rating: 
(1 Votes)
Convert from Decimal to any base, and vice versa, PLUS any base to any base!!!
VBcoders
Public Function NumberEquiv(Digit As String) As Double
If Digit = Trim(Str(Val(Digit))) Then
NumberEquiv = Val(Digit)
ElseIf Digit >= "A" And Digit <= "Z" Then
NumberEquiv = Asc(Digit) - 55
Else
MsgBox "The program tried to find the numeric value of an unknown character.", vbCritical, "Error!!!"
End If
End Function
' Use this function to convert any number from 0-35 into 0-9 or A-Z (for use with base conversions)
Public Function LetterEquiv(Digit As Integer) As String
Select Case Digit
Case i >= 0, Digit < 10
LetterEquiv = Trim(Str(Digit))
Case Is >= 10, Digit <= 35
LetterEquiv = Chr(Digit + 55)
Case Else
LetterEquiv = "?"
End Select
End Function
' Use this function to convert DECIMAL to ANY BASE
Public Function DecToBase(DecimalNumber As Double, Base As Integer) As String
Q = DecimalNumber
r = 0
Strg = ""
Do Until Q = 0
r = Q Mod Base
Q = Int(Q / Base)
Strg = LetterEquiv(r) + Strg
Loop
DecToBase = Strg
End Function
' Use this function to convert ANY BASE to DECIMAL
Public Function BaseToDec(BaseXNumber As String, Base As Integer) As Double
Dim Total As Double
Total = 0
For i = 1 To Len(BaseXNumber)
Total = Total + (NumberEquiv(Mid(BaseXNumber, i - 1, 1)) * Base ^ (Len(BaseXNumber) - i))
Next i
BaseToDec = Total
End Function
'Use this function to convert ANY BASE to ANY BASE
Public Function BaseToBase(BaseXNumber As String, BaseIn As Integer, BaseOut As Integer) As String
BaseToBase = DecToBase(BaseToDec(BaseXNumber, BaseIn), BaseOut)
End Function
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