From "perldoc -f log":

To get the log of another base, use basic algebra: The base-N log of a number is equal to the natural log of that number divided by the natural log of N. For example: 
  sub log10 {
    my $n = shift;
    return log($n)/log(10);
  }

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-- 
dempa

In reply to Re: Get logarithm of base 10 by dempa
in thread Get logarithm of base 10 by tamaguchi

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