by RedSting71 (9 Submissions)
Category: Math/Dates
Compatability: Visual Basic 4.0 (32-bit)
Difficulty: Unknown Difficulty
Originally Published: Sun 30th January 2000
Date Added: Mon 8th February 2021
Rating: 
(1 Votes)
Finally...a code that determines the greatest common factor between two numbers!
VBcoders
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Public Function Math_GCF(number1 As Double, number2 As Double) As Double
If number1 > number2 Then a = number2
If number2 > number1 Then a = number1
If number1 = number2 Then a = number1
n1 = number1: n2 = number2
h = n2 / n1
h2 = n1 / n2
If n1 > n2 Then
If Math_IsInteger(Val(h2)) Then Math_GCF = n2: Exit Function
End If
If n2 > n1 Then
If Math_IsInteger(Val(h)) Then Math_GCF = n1: Exit Function
End If
y = Math_LCM(number1, number2)
y = Val(y)
x = 1
Do: DoEvents
y = Math_LCM(Val(n1), Val(n2)) / Val(x)
b = n1 / x
c = n2 / x
If Math_IsInteger(Val(y)) Then
If Math_IsInteger(Val(b)) Then
If Math_IsInteger(Val(c)) Then
GCF = x
End If
End If
End If
x = x + 1
Loop Until x = a
Math_GCF = GCF
If n1 > n2 Then
Y1 = Math_LCM(Val(n1), Val(n2))
Y1 = Val(Y1) / Val(n2)
b = n1 / n2
c = n2 / n2
If Math_IsInteger(Val(Y1)) Then
If Math_IsInteger(Val(b)) Then
If Math_IsInteger(Val(c)) Then
GCF = n2
End If
End If
End If
End If
If n1 < n2 Then
Y1 = Math_LCM(Val(n1), Val(n2))
Y1 = Val(Y1) / Val(n1)
b = n1 / n1
c = n2 / n1
If Math_IsInteger(Val(Y1)) Then
If Math_IsInteger(Val(b)) Then
If Math_IsInteger(Val(c)) Then
GCF = n1
End If
End If
End If
End If
Math_GCF = GCF
End Function
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Public Function Math_IsInteger(number as double) as double
n1 = Trim(str(number))
n = InStr(1, n1, ".")
If n = 0 Then Math_IsInteger = True
If n > 0 Then Math_IsInteger = False
End Function
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