Ln calculation

dicty has asked for the wisdom of the Perl Monks concerning the following question:

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Re: Ln calculation by Arunbear (Prior) on Feb 05, 2013 at 17:45 UTC
See: log	[reply]
Re: Ln calculation by Old_Gray_Bear (Bishop) on Feb 05, 2013 at 19:22 UTC
What do you mean by "Ln(x)"? There are several polynomial series that fit that nomenclature: Laguerre polynomials Laurent polynomials Littlewood polynomials Legendre polynomials etc If you mean "ln(x)", then use the transformation rules to go from the `log(x)` (base 10) to `ln(x)` (base e). ---- I Go Back to Sleep, Now. OGB	[reply] [d/l] [select]
Re: Ln calculation by spandox (Novice) on Feb 05, 2013 at 21:28 UTC
As a reply I will just copy a excerpt from the manual: log EXPR log Returns the natural logarithm (base e) of EXPR. If EXPR is omitted, returns the log of $_ . 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); }` [download] See also exp for the inverse operation.	[reply] [d/l]