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3.26 omp_in_parallel – Whether a parallel region is active

Description:

This function returns true if currently running in parallel, false otherwise. Here, true and false represent their language-specific counterparts.

C/C++:
Prototype:int omp_in_parallel(void);
Fortran:
Interface:logical function omp_in_parallel()
Reference:

OpenMP specification v4.5, Section 3.2.6.