Difference between revisions of "Round"
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'''Declaration:''' | '''Declaration:''' | ||
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| − | + | function Round(X: Real): Longint; | |
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<syntaxhighlight> | <syntaxhighlight> | ||
begin | begin | ||
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'''Output:'''<br/> | '''Output:'''<br/> | ||
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| + | 4 | ||
| + | </pre> | ||
See also: | See also: | ||
Revision as of 17:17, 29 May 2018
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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:
