How to indentify a SID is wellknown sid or not

In my project, I need identify a SID is wellknown sid or not. I found a function to do it.

Well-known SIDs
http://msdn.microsoft.com/en-us/library/windows/desktop/aa379649(v=vs.85).aspx
Well-known-sid-type enumeration
http://msdn.microsoft.com/en-us/library/windows/desktop/aa379650(v=vs.85).aspx

IsWellKnownSid function
http://msdn.microsoft.com/en-us/library/windows/desktop/aa379154(v=vs.85).aspx
BOOL WINAPI IsWellKnownSid(
  _In_  PSID pSid,
  _In_  WELL_KNOWN_SID_TYPE WellKnownSidType
);