Calculates the natural logarithm of a number.
Log ( expression )
| expression | Any positive number. |
| Success: | the parameter's natural logarithm. |
| Failure: | Tends to return -1.#IND for non-positive parameters. |
@error is always 0
#include <MsgBoxConstants.au3>
Example()
Func Example()
; Assign a Local variable the natural logarithm of 1000.
Local $fLog1 = Log(1000)
; Display the result.
MsgBox($MB_SYSTEMMODAL, "", $fLog1)
; Assign a Local variable the base-10 natural logarithm of 1000.
Local $fLog2 = Log10(1000)
; Display the result.
MsgBox($MB_SYSTEMMODAL, "", $fLog2)
EndFunc ;==>Example
; User-defined function for common log
Func Log10($fNb)
Return Log($fNb) / Log(10) ; 10 is the base
EndFunc ;==>Log10