float relu(float x);
float drelu(float x);
float dtanhf(float x);
+float one_m_square(float x);
+float x_m_square(float x);
int compare_dat(const rnn_prb_t *p, rnn_data_kind_t kind, dnn_mem_t &mem_dt,
dnn_mem_t &mem_fp, res_t *r, bool final_compare);