# EXSLT - math:log - Implementer Page

Version: 1 Status: implemented User Page: index.html XML Definition: math.log.xml Function Package: math.log.zip #### Function Syntax
    number math:log(number)
The `math:log` function returns the natural logarithm of a number. The return value is the natural logarithm of number. The base is e. An implementation of this extension function in the EXSLT math namespace must conform to the behaviour described in this document. ## Implementations Built-in support for `math:log` is available in the following XSLT processors:
Processor | Processor Version | Implemented Version
--- | --- | ---
4XSLT, from 4Suite. | 0.12.0a3 | 1
libxslt from Daniel Veillard et al. | 1.0.19 | 1
The following implementations of `math:log` are available:
Language | Implemented Version | Creator | Date | Download
--- | --- | --- | --- | ---
Msxsl | 1 | James Fuller | 2001-06-16 | math.log.msxsl.xsl
Javascript | 1 | James Fuller | 2001-06-16 | math.log.js
## Change History Submitted: 2001-06-16 Creator: James Fuller(http://www.ruminate.co.uk) Returns the log value of the passed argument.
Version | Modified | By | Details
--- | --- | --- | ---
1.1 | 2002-08-21 | Craig Stewart | Added 4XSLT and libxslt implementation to the list.
1.2 | 2002-11-12 | Craig Stewart | Updated 4XSLT version to 0.12.0a3.

http://www.exslt.org/math/functions/log/math.log.html last modified 2002-11-12