Returns the natural logarithm of a number.
Number: Any numeric expression that you want to calculate the natural logarithm for.
The natural logarithm is the logarithm to the base e. Base e is a constant with an approximate value of 2.718282...
You can calculate logarithms to any base (n) for any number (x) by dividing the natural logarithm of x by the natural logarithm of n, as follows:
Logn(x) = Log(x) / Log(n)
Sub ExampleLogExp Dim a As Double Dim Const b1=12.345e12 Dim Const b2=1.345e34 a=Exp( Log(b1)+Log(b2) ) MsgBox "" & a & chr(13) & (b1*b2) ,0,"Multiplication by logarithm function" End Sub