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    TSingleHelper.IsNan

    Check whether a value equals NaN.

    Declaration

    Source position: syshelph.inc line 694

    public 
class function IsNan(const AValue: Single) : Boolean;  overload;  static; overload;

function IsNan : Boolean;  overload; overload;

    Description

    IsNan checks whether a single-sized floating point value is NaN (Not a Number). If so, it returns True. When the class function version is used, the value can be specified using AValue. In the method version, the used value is (Self).

    See also

    Name Description
    TSingleHelper.IsInfinity Check whether a value is positive or negative infinity.
    TSingleHelper.IsPositiveInfinity Check whether a value is positive infinity.
    TSingleHelper.IsNegativeInfinity Check whether a value is negative infinity.