GNU libgomp: acc_async_test

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### 5.6 `acc_async_test` – Test for completion of a specific asynchronous operation.

Description

  This function tests for completion of the asynchrounous operation specified in arg. In C/C++, a non-zero value will be returned to indicate the specified asynchronous operation has completed. While Fortran will return a `true`. If the asynchrounous operation has not completed, C/C++ returns a zero and Fortran returns a `false`.

C/C++:

  Prototype: | `int acc_async_test(int arg);`

Fortran:

  Interface: | `function acc_async_test(arg)`
  | `integer(kind=acc_handle_kind) arg`
  | `logical acc_async_test`

Reference:

  OpenACC specification v2.0, section 3.2.6.