libhal_device_set_property_double
if (!libhal_device_set_property_double(hal_ctx, nd->real_udi, p->key, p->v.double_value, &error)) {
rc = libhal_device_set_property_double (hal_ctx, udi, key, double_value, &error);
dbus_bool_t libhal_device_set_property_double (LibHalContext *ctx,