====== LN ======

{{:en:mervis-ide:35-help:ln.png}}

===== Function name =====

LN

===== ST call =====

<code st-iec>
PROGRAM LN_DEMO
    VAR
     REAL1,REAL2: REAL;
  END_VAR
 REAL2:= LN(REAL1);
END_PROGRAM
</code>

===== Description =====

Returns the natural logarithm value.\\


===== Inputs =====

|Input|Type    |Description|
|IN   |ANY_REAL|Input value|

===== Outputs =====

|Output|Type    |Description |
|=>    |ANY_REAL|Output value|

===== Application example =====

{{:en:mervis-ide:35-help:ln_example.png}}