Rounding a number to the nearest 5 or 10 or X

Question

Given numbers like 499, 73433, 2348 what VBA can I use to round to the nearest 5 or 10? or an arbitrary number?

By 5:

 499 ->  500
2348 -> 2350         


        

Answer 1

Here is our solution:

Public Enum RoundingDirection
    Nearest
    Up
    Down
End Enum

Public Shared Function GetRoundedNumber(ByVal number As Decimal, ByVal multiplier As Decimal, ByVal direction As RoundingDirection) As Decimal
    Dim nearestValue As Decimal = (CInt(number / multiplier) * multiplier)
    Select Case direction
        Case RoundingDirection.Nearest
            Return nearestValue
        Case RoundingDirection.Up
            If nearestValue >= number Then
                Return nearestValue
            Else
                Return nearestValue + multiplier
            End If
        Case RoundingDirection.Down
            If nearestValue <= number Then
                Return nearestValue
            Else
                Return nearestValue - multiplier
            End If
    End Select
End Function

Usage:

dim decTotal as Decimal = GetRoundedNumber(CDec(499), CDec(0.05), RoundingDirection.Up)