Reference for package '#rtl'

Abs

Calculate absolute value

Declaration

Source position: systemh.inc line 957

  function Abs(l: LongInt) : LongInt;
  function Abs(l: Int64) : Int64;
  function Abs(d: ValReal) : ValReal;

Description

Abs returns the absolute value of a variable. The result of the function has the same type as its argument, which can be any numerical type.

Errors

None.

See also

Name Description
Round Round floating point value to nearest integer number.

Example

Program Example1;
{ Program to demonstrate the Abs function. }
Var
  r : real;
  i : integer;
begin
  r:=abs(-1.0);   { r:=1.0 }
  i:=abs(-21);    { i:=21 }
end.