# naginterfaces.library.omp.in_​parallel¶

naginterfaces.library.omp.in_parallel()[source]

in_parallel returns if called from within an active OpenMP parallel region, and otherwise.

For full information please refer to the NAG Library document for x06af

https://www.nag.com/numeric/nl/nagdoc_28.7/flhtml/x06/x06aff.html

Returns
inparbool

if called from within an active OpenMP parallel region, and otherwise.

Notes

in_parallel, for multithreaded implementations, returns if called from within an active OpenMP parallel region, and otherwise.

In serial implementations of the NAG Library this function will always return . See the X06 Introduction for a discussion of the behaviour of these functions when called in serial.

References

The OpenMP API Specification for Parallel Programming

Chapman, B, Jost, G and van der Pas, R, 2008, Using OpenMP Portable Shared Memory Parallel Programming, The MIT Press