GNU libgomp: omp_get_active_level

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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.