v1.0.0-rc.31

common/MovingAverage.cpp

@@ -0,0 +1,28 @@
+// SPDX-FileCopyrightText: 2024 Filip Leonarski, Paul Scherrer Institute <filip.leonarski@psi.ch>
+// SPDX-License-Identifier: GPL-3.0-only
+
+#include <cmath>
+#include "MovingAverage.h"
+
+MovingAverage::MovingAverage(size_t elems) : elems(elems) {}
+
+void MovingAverage::Add(float val) {
+    std::unique_lock ul(m);
+
+    if (q.size() >= elems)
+        q.pop_front();
+    q.push_back(val);
+}
+
+std::optional<float> MovingAverage::Read() const {
+    std::unique_lock ul(m);
+
+    if (q.empty())
+        return {};
+
+    float sum = 0;
+    for (const auto &elem: q)
+        sum += elem;
+
+    return sum / q.size();
+}