[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'System' (#rtl)

# Round

Round floating point value to nearest integer number.

## Declaration

Source position: mathh.inc line 114

 function Round( d: ValReal ):Int64;

## Description

Round rounds X to the closest integer, which may be bigger or smaller than X.

In the case of .5, the algorithm uses "banker's rounding": .5 values are always rounded towards the even number.

## Errors

None.

 Frac Return fractional part of floating point value. Int Calculate integer part of floating point value. Trunc Truncate a floating point value.

## Example

```Program Example54;

{ Program to demonstrate the Round function. }

begin
Writeln (Round(1234.56));  { Prints 1235     }
Writeln (Round(-1234.56)); { Prints -1235    }
Writeln (Round(12.3456));  { Prints 12       }
Writeln (Round(-12.3456)); { Prints -12      }
Writeln (Round(2.5));      { Prints 2 (down) }
Writeln (Round(3.5));      { Prints 4 (up)   }

end.
```