Round

│ Deutsch (de) │ English (en) │ Esperanto (eo) │ suomi (fi) │ русский (ru) │

The RTL System unit contains function Round, which rounds a Real-type value to an Integer-type value. It's input parameter is a real-type expression and Round returns a Longint value that is the value of the input rounded to the nearest whole number. If the input value is exactly halfway between two whole numbers - N.5 - then "bankers rounding" is used, with the result being the nearest even number.

Declaration:

function Round(X: Real): Longint;

begin
   WriteLn( Round(8.7) );
   WriteLn( Round(8.3) );
   // examples of "bankers rounding" - .5 is adjusted to the nearest even number
   WriteLn( Round(2.5) );
   WriteLn( Round(3.5) );
end.

Output:

9
8
2
4

See also:

• Int
• Trunc
• Div