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2.1 omp_get_active_level – Number of parallel regions

Description:
This function returns the nesting level for the active parallel blocks, which enclose the calling call.
C/C++

Prototype: int omp_get_active_level(void);

Fortran:

Interface: integer function omp_get_active_level()

See also:
omp_get_level, omp_get_max_active_levels, omp_set_max_active_levels
Reference:
OpenMP specification v4.5, Section 3.2.20.