feat: rolling average

include/sta/math/algorithms/rollingAverage.hpp

@@ -0,0 +1,37 @@
+#ifndef INC_ROLLING_AVG_HPP_
+#define INC_ROLLING_AVG_HPP_
+
+namespace sta
+{
+    namespace math
+    {
+
+        /// Rolling average class, using a ring buffer
+        template <typename T> class RollingAverage
+        {
+        public:
+            using Value = T;
+
+            /// @brief Determines rolling average for a given size, discarding the oldest value
+            /// @param size Size of the rolling average
+            RollingAverage(int size);
+            ~RollingAverage();
+
+            /// @brief Adds a value to the rolling average
+            /// @param value Value to add
+            void add(Value value);
+
+            /// @brief Returns the current rolling average
+            /// @return Current rolling average
+            Value get();
+            
+        private:
+            Value *values_;
+            int size_;
+            int index_;
+            Value sum_;
+        };
+    } // namespace math
+} // namespace sta
+
+#endif /* INC_ROLLING_AVG_HPP_ */