using_threaded_impl returns when using a multithreaded implementation of the NAG Library and otherwise.

For full information please refer to the NAG Library document for x06xa

https://www.nag.com/numeric/nl/nagdoc_28.7/flhtml/x06/x06xaf.html

Returns
smplibbool

if using a multithreaded implementation of the NAG Library and otherwise.

Notes

using_threaded_impl can be used to determine whether you are using a serial or multithreaded implementation of the NAG Library. In particular, with this information the behaviour of the other routines in this module can be predicted, as described in the X06 Introduction.

The function returns when a multithreaded implementation of the NAG Library is being used and if a serial implementation is being used.