NAG Library Function Document

nag_omp_get_nested (x06ahc)

nag_omp_get_nested (x06ahc) returns $1$ if nested OpenMP parallelism has been enabled, and $0$ otherwise.

nag_omp_get_nested (x06ahc), for multi-threaded implementations, tests whether the nesting of OpenMP parallel regions has been enabled as if with a call to nag_omp_set_nested (x06agc). The return value will be $1$ if nesting is enabled or $0$ if it is disabled.

In serial implementations of the NAG C Library nag_omp_get_nested (x06ahc) will always return $0$. See the the x06 Chapter Introduction for a discussion of the behaviour of these functions when called in serial.

OpenMP Specifications http://openmp.org/wp/OpenMP-Specifications

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

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See Section 10 in nag_omp_set_nested (x06agc) for a demonstration of how to use nag_omp_get_nested (x06ahc).