Difference between revisions of "Trunc"
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{{Trunc}} | {{Trunc}} | ||
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The [[RTL]] [[System unit]] contains [[Function|function]] '''trunc''' which truncates a [[Real|real]]-type value to an [[Integer]]-type value. | The [[RTL]] [[System unit]] contains [[Function|function]] '''trunc''' which truncates a [[Real|real]]-type value to an [[Integer]]-type value. | ||
It's input parameter is a real-type [[expression]].Trunc returns a [[Longint]] value that is the value of the input parameter rounded toward zero. | It's input parameter is a real-type [[expression]].Trunc returns a [[Longint]] value that is the value of the input parameter rounded toward zero. | ||
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== Declaration == | == Declaration == | ||
Revision as of 21:18, 26 September 2019
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The RTL System unit contains function trunc which truncates a real-type value to an Integer-type value. It's input parameter is a real-type expression.Trunc returns a Longint value that is the value of the input parameter rounded toward zero.
Declaration
function Trunc(X: Real): Longint;
Example Usage
begin
WriteLn( Trunc(8.7) );
WriteLn( Trunc(8.3) );
WriteLn( Trunc(-8.7) );
WriteLn( Trunc(-8.3) );
end;
Output
8 8 -8 -8
See also
roundmath.ceil- round upmath.floor- round downfrac- returns the fractional part of a floating point valueint- returns the integer part of a floating point valuediv- integer division- Comparison of approaches for rounding to an integer
