NAG FL Interface
x06aff returns if called from within an active OpenMP parallel region, and otherwise.
The routine may be called by the names x06aff or nagf_omp_in_parallel.
x06aff, for multithreaded implementations, returns if called from within an active OpenMP parallel region, and otherwise.
Note that the equivalent OpenMP routine omp_in_parallel() returns a logical value.
In serial implementations of the NAG Library this routine will always return
. See the X06 Chapter Introduction
for a discussion of the behaviour of these routines when called in serial.
Chapman B, Jost G and van der Pas R (2008) Using OpenMP Portable Shared Memory Parallel Programming The MIT Press
Error Indicators and Warnings
Parallelism and Performance
x06aff is not threaded in any implementation.
for a demonstration of how to use x06aff