IBM® XL C/C++ for AIX®, V13.1 partially supports the OpenMP Application Program Interface Version 4.0 specification. The XL C/C++ implementation is based on IBM's interpretation of the OpenMP Application Program Interface Version 4.0.
This version of XL C/C++ supports the following OpenMP 4.0 features:
The update and capture clauses of the atomic construct are extended to support more expression forms.
You can use the OMP_DISPLAY_ENV environment variable to display the values of the internal control variables (ICVs) associated with the environment variables and the build-specific information about the runtime library.