improve dot_product function

openair1/PHY/TOOLS/tools_defs.h

@@ -742,16 +742,10 @@ int32_t phy_phase_compensation_top(uint32_t pilot_type,
                                    uint32_t last_pilot,
                                    int32_t ignore_prefix);
 
-int32_t dot_product(int16_t *x,
-                    int16_t *y,
-                    uint32_t N, //must be a multiple of 8
-                    uint8_t output_shift);
-
-int64_t dot_product64(int16_t *x,
-                      int16_t *y,
-                      uint32_t N, //must be a multiple of 8
-                      uint8_t output_shift);
-
+c32_t dot_product(const c16_t *x,
+                  const c16_t *y,
+                  const uint32_t N, // must be a multiple of 8
+                  const int output_shift);
 
 /** @} */