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    IsZero

    Check whether value is zero.

    Declaration

    Source position: math.pp line 311

    function IsZero(const A: Single; Epsilon: Single) : Boolean;  overload; overload;

    function IsZero(const A: Single) : Boolean;  overload; overload;

    function IsZero(const A: Double; Epsilon: Double) : Boolean;  overload; overload;

    function IsZero(const A: Double) : Boolean;  overload; overload;

    function IsZero(const A: Extended; Epsilon: Extended) : Boolean
               ;  overload; overload;

    function IsZero(const A: Extended) : Boolean;  overload; overload;

    Description

    IsZero checks whether the float value A is zero, up to a precision of Epsilon. It returns True if Abs(A) is less than Epsilon.

    The default value for Epsilon depends on the type of the argument: it is 1E-4 for Single, 1E-12 for Double and 1E-16 for extended.

    See also

    Name Description
    IsNan Check whether value is Not a Number.
    IsInfinite Check whether value is infinite.
    SameValue Check whether 2 float values are the same.