Function Warning - Null Reference

I am getting the following warning for the below function. I understand what
it means but how do I handle a null reference? Then how do I pass the
resulting value?

Regards



Warning 1 Function 'Dec2hms' doesn't return a value on all code paths. A
null reference exception could occur at run time when the result is used.
G:\Project Development\Visual Studio
2005\Projects\Ascension\Ascension\SwephConversions.vb 64 3 Ascension


' Convert decimal hours to hours/minutes/seconds

Public Function Dec2hms(ByVal x As Decimal) As String

Dim hh As Int32, mm As Int32, ss As Decimal, remainder As Decimal

'Dim x a decimal, hh as integer

hh = CType(x, Integer)

remainder = (x - hh)

mm = CType((remainder * 60), Integer)

remainder = ((remainder * 60) - mm)

ss = Int(remainder * 60)

remainder = ((remainder * 60) - ss)

If remainder >= 0.5 Then

ss = ss + 1

Else

ss = ss

End If

hms = hh & "h " & mm & "m " & ss & "s"

End Function


.

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