System.Trunc

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Delphi

function Trunc(X: Real): Int64;

Properties

Type	Visibility	Source	Unit	Parent
function	public	System.pas	System	System

Description

Truncates a real number to an integer.

In Delphi code, the Trunc function truncates a real-type value to an integer-type value. X is a real-type expression. Trunc returns an Int64 value that is the value of X rounded toward zero.

If the truncated value of X is not within the Int64 range, an EInvalidOp exception is raised.

Note: Please consider checking the Floating-Point Rounding Routines topic for more insight on rounding routines.

See Also

• System.Int
• System.Round
• System.Math.Floor
• System.Math.Ceil
• Delphi Intrinsic Routines
• Mathematical Routines

Code Examples

• SystemTrunc (Delphi)