====== FLOOR ======

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

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

FLOOR

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

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

===== Description =====

Returns the largest whole number which is not greater than the input 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:floor_example.png}}

===== Calculation example =====

|Input value|round ( _TO_ )|[[en:mervis-ide:35-help:035-software_basic:060-libraries:020-basic-analogue-boxes:015-mathematics:030-floor|floor]]|[[en:mervis-ide:35-help:035-software_basic:060-libraries:020-basic-analogue-boxes:015-mathematics:020-ceil|ceil]]|[[en:mervis-ide:35-help:035-software_basic:060-libraries:020-basic-analogue-boxes:015-mathematics:065-trunc|trunc]]|
|5.5        |6             |5    |6                |5                  |
|3.8        |4             |3    |4                |3                  |
|2.3        |2             |2    |3                |3                  |
|-2.3       |-2            |-3   |-2               |-2                 |
|-3.8       |-4            |-4   |-3               |-3                 |
|-5.5       |-6            |-6   |-5               |-5                 |