Function hbs_pow_sys::heartbeat_pow

pub unsafe extern "C" fn heartbeat_pow(
    hb: *mut heartbeat_pow_context, 
    user_tag: uint64_t, 
    work: uint64_t, 
    start_time: uint64_t, 
    end_time: uint64_t, 
    start_energy: uint64_t, 
    end_energy: uint64_t
)