GNU libgomp: acc_hostptr

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### 5.28 `acc_hostptr` – Get host pointer associated with specific device address.

Description

  This function returns the host address that has been mapped to the device address specified by d.

C/C++:

  Prototype: | `void *acc_hostptr(d_void *d);`

Reference:

  OpenACC specification v2.0, section 3.2.28.