
abs(+Number, -Result)
-Result is abs(+Number)

   Unifies the absolute value of Number with Result.



Arguments
   Number              A number.
   Result              Output: a number.

Type
   Arithmetic

Description

   Unifies the absolute value of Number with Result.

   Result is the absolute value of Number, and of the same type.

   This predicate can be used as a function in arithmetic expressions.
   In coroutining mode, if Number is uninstantiated, the call to abs/2 is
   delayed until this variable is instantiated.


Modes and Determinism
   abs(+, -) is det

Exceptions
     4 --- Number is not instantiated (non-coroutining mode only).
    24 --- Number is not of a numeric type.

Examples
   
    Result is abs(1).		% gives Result = 1
    Result is abs(-5).		% gives Result = 5
    Result is abs(-6.2).	% gives Result = 6.2

    Result is abs(-0.6__-0.5).	% gives Result = 0.5__0.6
    Result is abs(-0.2__0.1).	% gives Result = 0.0__0.2


See Also
   is / 2
