cvs: phpdoc /en/reference/math/functions log.xml

jmcastagnetto Thu Dec 26 18:22:48 2002 EDT Modified files: /phpdoc/en/reference/math/functions log.xml Log: Adding ref to the equation: log_b(n) = log(n)/log(b), so no more incorrect notes will be added by people who have forgotten their logarithms ;-) Index: phpdoc/en/reference/math/functions/log.xml diff -u phpdoc/en/reference/math/functions/log.xml:1.5 phpdoc/en/reference/math/functions/log.xml:1.6 --- phpdoc/en/reference/math/functions/log.xml:1.5 Mon Nov 11 05:06:19 2002 +++ phpdoc/en/reference/math/functions/log.xml Thu Dec 26 18:22:48 2002 @@ -1,5 +1,5 @@ <?xml version="1.0" encoding="iso-8859-1"?> -<!-- $Revision: 1.5 $ --> +<!-- $Revision: 1.6 $ --> <!-- splitted from ./en/functions/math.xml, last change in rev 1.2 --> <refentry id="function.log"> <refnamediv> @@ -23,6 +23,12 @@ <para> The <parameter>base</parameter> parameter became available with PHP version 4.3.0. + </para> + <para> + As always you can calculate the logarithm in base <literal>b</literal> + of a number <literal>n</literal>, but using the mathematical identity: + log<subscript>b</subscript>(n) = log(n)/log(b), where log is the + neperian (or natural) logarithm. </para> </note> </refsect1>