I'm trying to code a line in VBA that would allow me to generate random numbers between -35 and 5. I've used the below formula however, it gives me random numbers between -5 and +5
Int((Rnd() * ((-1) ^ Int(Rnd() * 10))) * 5)
Fix(Rnd() * 41) - 35
will do it. This will be uniformly distributed insofar that Rnd() is. Fix scrubs the decimal portion of a number. You want every number between -35 and 5 inclusive which is 41 numbers. rnd() itself never draws 1.
Test the generator with something like
Sub test()
Dim j As Long
While True
j = Fix(Rnd() * 41) - 35
VBA.DoEvents 'so you can break the program once you're done
If j < -35 Or j > 5 Then
Stop 'oops
End If
If j = -35 Then
Debug.Print "Yup, I draw on the boundary"
End If
If j = 5 Then
Debug.Print "Yup, I draw on the boundary"
End If
Wend
End Sub
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