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Calculate absolute value
Source position: systemh.inc line 806
| 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.