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Calculate absolute value
Source position: systemh.inc line 869
function Abs(  | 
l: LongInt  | 
):LongInt;  | 
l: Int64  | 
):Int64;  | 
d: ValReal  | 
):ValReal;  | 
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.
None.
  | 
Round floating point value to nearest integer number.  | 
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.