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rubymathlogarithm

How to get the base 10 logarithm of a Fixnum in Ruby?

I want to get the base 10 logarithm of a Fixnum using Ruby, but found that n.log or n.log10 are not defined. Math::log is defined but uses a different base than 10.

What is the easiest way to get the base 10 logarithm of a Fixnum?

Solution

  • There is 

    Math::log10 (n)

    And there is also a property of logarithms that logx(y) = log(y)/log(x)