[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'sysutils' (#rtl)

TDoubleHelper.IsNegativeInfinity

Check whether a value is negative infinity.

Declaration

Source position: syshelph.inc line 268

public class function TDoubleHelper.IsNegativeInfinity(

  const AValue: Double

):Boolean; overload;

function TDoubleHelper.IsNegativeInfinity: Boolean; overload;

Description

IsNegativeInfinity checks whether a Double-sized floating point value represents a negative infinity. 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

TDoubleHelper.IsNan

  

Check whether a value equals NaN.

TDoubleHelper.IsPositiveInfinity

  

Check whether a value is positive infinity.

TDoubleHelper.IsInfinity

  

Check whether a value is positive or negative infinity.


Documentation generated on: Mar 17 2017