extern int GraphBuffer[MAX_GRAPH_TRACE_LEN];
extern int GraphTraceLen;
+extern int s_Buff[MAX_GRAPH_TRACE_LEN];
+
+int autoCorr(const int* in, int *out, size_t len, int window);
+int directionalThreshold(const int* in, int *out, size_t len, int8_t up, int8_t down);
+
#endif