August 2006
Intermediate to advanced
1018 pages
34h 13m
English
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Name
Math.log( ): compute a natural logarithm — ECMAScript v1
Synopsis
Math.log(x)
Arguments
-
x Any numeric value or expression greater than zero.
Returns
The natural logarithm of
x.
Description
Math.log( ) computes
log e
x, the natural logarithm of its argument. The
argument must be greater than zero.
You can compute the base-10 and base-2 logarithms of a number with these formulas:
log10x = log10e · logex log2x = log2e · logex
These formulas translate into the following JavaScript functions:
function log10(x) { return Math.LOG10E * Math.log(x); }
function log2(x) { return Math.LOG2E * Math.log(x); }Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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