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Tip of the Day
Language: Visual Basic
Expertise: Beginner
Jun 4, 1999

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Application Security Testing: An Integral Part of DevOps


Rounding function

Question:
Is there a way to round numbers to the nearest multiple of n, where n could be any number? For example, if n = 5, it would round 8 to 10, 13 to 10, 24 to 25, etc.

Answer:
There is no native function that I know about that would provide this functionality, but we could create a simple function:

Private Function RoundEx(iValue As Integer, iMod As Integer) As Integer
    If iValue Mod iMod >= iMod / 2 Then
        RoundEx = iValue + iMod - (iValue Mod iMod)
    Else
        RoundEx = iValue - (iValue Mod iMod)
    End If
End Function

Basically, we determine which way we are going to round, up or down. This is done by looking at remainder of the iValue divided by iMod. If it is greater then or equal to iMod/2 then we round up. Otherwise we round down.

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