Function hbs_acc_pow_sys::heartbeat_acc_pow_init

pub unsafe extern "C" fn heartbeat_acc_pow_init(
    hb: *mut heartbeat_acc_pow_context, 
    window_size: uint64_t, 
    window_buffer: *mut heartbeat_acc_pow_record, 
    log_fd: c_int, 
    hwc_callback: Option<heartbeat_acc_pow_window_complete>
) -> c_int