====== ISNEGATIVEINFINITY ======

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

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

ISNEGATIVEINFINITY

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

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

===== Description =====

Compares the input variable value with negative infinity. Returns TRUE if the value is negative infinity.

===== Inputs =====

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

===== Outputs =====

|Output|Type|Description |
|=>    |BOOL|Output value|

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

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