fix data types in quartus

Author: JanFSchulte

hls4ml/templates/quartus/firmware/nnet_utils/nnet_recurrent.h

@@ -765,10 +765,10 @@ void lstm(data_T data[CONFIG_T::n_timesteps * CONFIG_T::n_in], data2_T hidden_st
           const typename CONFIG_T::weight_t RWO[CONFIG_T::n_out * CONFIG_T::n_out],
           const typename CONFIG_T::bias_t BI[CONFIG_T::n_out], const typename CONFIG_T::bias_t BF[CONFIG_T::n_out],
           const typename CONFIG_T::bias_t BC[CONFIG_T::n_out], const typename CONFIG_T::bias_t BO[CONFIG_T::n_out]) {
-    res_T hidden_state[CONFIG_T::n_out][CONFIG_T::n_timesteps + 1] hls_register;
-    res_T hidden_state_temp[CONFIG_T::n_out] hls_register;
-    res_T cell_state[CONFIG_T::n_out][CONFIG_T::n_timesteps + 1] hls_register;
-    res_T cell_state_temp[CONFIG_T::n_out] hls_register;
+    data2_T hidden_state[CONFIG_T::n_out][CONFIG_T::n_timesteps + 1] hls_register;
+    data2_T hidden_state_temp[CONFIG_T::n_out] hls_register;
+    data3_T cell_state[CONFIG_T::n_out][CONFIG_T::n_timesteps + 1] hls_register;
+    data3_T cell_state_temp[CONFIG_T::n_out] hls_register;
     res_T h[CONFIG_T::n_out] hls_register;
     res_T c[CONFIG_T::n_out] hls_register;
     data_T in[CONFIG_T::n_in] hls_register;