Shell Programming and Scripting

An easy way to calculate the log2(n) on calculatorCalculator

A calculator is a device for performing calculations....
s that do not have a log2-function is to use the natural logarithmNatural logarithm

The natural logarithm, formerly known as the hyperbolic logarithm, is the logarithm to the base e, where e is equal ...
 "ln" or the common logarithmCommon logarithm

In mathematics, the common logarithm is the logarithm with base 10....
 "log" functions, which are found on most "scientific calculators". The formulaeLogarithm

The logarithm is the mathematical operation that is the inverse of exponentiation ....
 for this are:

    log2(n) = ln(n)/ln(2) = log(n)/log(2)


so

    log2(n) = loge(n)×1.442695... = log10(n)×3.321928...

$ print $(( log(10) ))
2.30258509299405
$ print $(( logb(10) ))
3