Roots and powers playing nicely together...

[Kernelpanic]

Pete, what you gave as an example is an Excel function. Or am I wrong?
"You can use the Excel LOG10 function to find the base 10 logarithm of a number. For example, =LOG10(100) returns 2 and =LOG10(1000) returns 3." - That is correct.

Oh, now I can't see through it anymore. This is mayhem! 

And this is the result with the Log-Function in QBasic64:

Code: (Select All)

'Logarithmusuebung mit "Log" - 1. Okt. 2022

Option _Explicit

Declare Function LogX(wert As Double) As Long

Dim As Double wert
Dim As Integer i

Input "Log(i): ", i

For i = 1 To i
  wert = Log(i)
  Print Using "####.#####"; wert
Next

Print
'Log(100)
Print Using "Log: ####.##### -- From: MS QBasic - Programmer's Guide"; Log(100)

End 'Programm

Function LogX (value As Double) Static

  Dim ergebnis As Double

  ergebnis = Log(value) / Log(10)
  LogX = ergebnis
End Function