Multithreading

Dear Dr. Eddelbuettel: Could you please help me clarify how the multithreading works in RcppAnnoy. 1) Suppose a client wants to use RcppAnnoy "as is", following your simpleExample.R. By default, will the multithreading be enabled? 2) When multithreading is enabled (I take it for that one has to define ANNOYLIB_MULTITHREADED_BUILD in the source) are the search results going to be identical to those of the single threaded version? Thank you for your help, Nik Tuzov, PhD