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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[BUG] opencl-interop `get_device_type` always returns `DeviceType::ALL`","articleBody":"Description\n===========\nThe `get_device_type` function transmutes the value `-1` into `DeviceType` or returns `DeviceType::ALL`; however, the enum variant that corresponds to the value `(-1i32 as u64)` [_is_](https://docs.rs/cl-sys/latest/src/cl_sys/cl_h.rs.html#216) `DeviceType::ALL`. This does not seem to be the intended behaviour.\n```rust\n///// Fetch Active ArrayFire device's type i.e. CPU/GPU/Accelerator etc.\npub fn get_device_type() -\u003e DeviceType {\n    let mut out: i32 = 0;\n    let err_val = unsafe { afcl_get_device_type(\u0026mut out as *mut c_int) };\n    handle_error_general(AfError::from(err_val));\n    match out {\n        -1 =\u003e unsafe { mem::transmute(out as u64) },\n        _ =\u003e DeviceType::ALL,\n    }\n}\n```\n\nThe value of `-1` corresponds to `AFCL_DEVICE_TYPE_UNKNOWN` in arrayfire, whilst `-1` corresponds to `CL_DEVICE_TYPE_ALL` in `cl-sys`","author":{"url":"https://github.com/nikhilr612","@type":"Person","name":"nikhilr612"},"datePublished":"2025-01-27T11:14:11.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/382/arrayfire-rust/issues/382"}