Appendix: Built-in Scripting Language > Logarithmic functions >

Log

Calculates the natural log of numValue.

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

Syntax

Log(numValue)
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
Parent topic: Logarithmic functions
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