Log

Calculates the natural log of numValue.

Function Group Execution Windows Embedded Thin Client Mobile Access
Log Logarithmic Synchronous Supported Supported Supported Supported

Syntax

Web Studio Help 2fr function logarithmic log.xml d141854e79 Log

numValue
Integer or Real tag from which the natural log is taken.

Returned value

Returns the value of ln( numValue ).

Note: If numValue has a negative value, then this function will return the value 0 and it will set the quality of the returned tag to BAD.

Examples

Tag Name Expression
Tag Log( 2.718282 ) // Returned value = 1
Tag Log( 100 ) // Returned value = 4.605170

Log