x06ahc, for multithreaded implementations, tests whether the nesting of OpenMP parallel regions has been enabled as if with a call to x06agc. The return value will be

1

if nesting is enabled or

0

if it is disabled.

In serial implementations of the NAG Library x06ahc will always return

0

. See the X06 Chapter Introduction for a discussion of the behaviour of these functions when called in serial.

4 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

5 Arguments

None.

6 Error Indicators and Warnings

None.

7 Accuracy

Not applicable.

8 Parallelism and Performance

x06ahc is not threaded in any implementation.

9 Further Comments

None.

10 Example

See x06agc for a demonstration of how to use x06ahc.

NAG Library Manual, Mark 27.1

Interfaces: FL CL CPP AD

NAG CL Interface Introduction

X06 (Omp) Chapter Contents

X06 (Omp) Chapter Introduction

x06ah: FL CL CPP AD

NAG CL Interfacex06ahc (get_​nested)

▸▿ Contents

1 Purpose

2 Specification

3 Description

4 References

5 Arguments

6 Error Indicators and Warnings

7 Accuracy

8 Parallelism and Performance

9 Further Comments

10 Example

NAG CL Interface
x06ahc (get_nested)