ValueEquals

function ValueEquals(

  const AA: TDateTimeRec;

  const AB: TDateTimeRec

):Boolean; overload;

function ValueEquals(

  const AA: TTimeRec;

  const AB: TTimeRec

):Boolean; overload;

function ValueEquals(

  const AA: TDurationRec;

  const AB: TDurationRec

):Boolean; overload;