Rnd() ignores the maximum value

Mistrel · #1 (**permalink**) 10-13-2007, 07:36 AM

If you run this example you'll see that rnd() never returns 1.

Sub App_Start
x=0
Do
n=Rnd(0,1)
If n=0 Then
Msgbox(n)
Else
Msgbox(n)
End If
Loop Until x=1
End Sub

Erel · #2 (**permalink**) 10-13-2007, 07:40 AM

Please read the manual or at least ask in the questions section before posting bug reports: http://www.basic4ppc.com/help/rnd.html

Mistrel · #3 (**permalink**) 10-13-2007, 07:45 AM

Sorry. I admit that I skimmed over the documentation for rnd() (as short as it was). I've never seen a rnd function that ignores the upper limit before and assumed wrong. I was convinced this was a bug.

Erel · #4 (**permalink**) 10-13-2007, 07:48 AM

No problem

This is how it behaves in C# and VB .Net.

Mistrel · #5 (**permalink**) 10-13-2007, 07:57 AM

Really? That's so confusing. o.o

Cableguy · #6 (**permalink**) 10-14-2007, 10:57 PM

In the old days, in my zx spectrum ++, rnd only returned a value between 0 and....1, except for the ....1 so we ould get decimal of 0.1,0.2,....etc and we couldnt even state the max or min values.... now that was confusing....

specci48 · #7 (**permalink**) 10-15-2007, 04:15 PM

Quote:

Originally Posted by Cableguy

In the old days, in my zx spectrum ++, rnd only returned a value between 0 and....1, except for the ....1 so we ould get decimal of 0.1,0.2,....etc and we couldnt even state the max or min values.... now that was confusing....

... max values were possible ...

10 LET A = INT(RND*N)

... results for A are values from 0 to N-1 ...

specci48