/text/sbasic/shared/03080202.xhp

Log function Log Function [Runtime] Returns the natural logarithm of a number.

Syntax: Log (Number) Return value: Double Parameters: 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: Log n(x) = Log(x) / Log(n) Example: 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