pub type clEnqueueMemFillINTEL_fn = Option<unsafe extern "C" fn(command_queue: cl_command_queue, dst_ptr: *mut c_void, pattern: *const c_void, pattern_size: size_t, size: size_t, num_events_in_wait_list: cl_uint, event_wait_list: *const cl_event, event: *mut cl_event) -> cl_int>;