Convolutional neural network training.

FHE/AddableVector.hpp

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+/*
+ * AddableVector.cpp
+ *
+ */
+
+#include "AddableVector.h"
+#include "Rq_Element.h"
+#include "FHE_Keys.h"
+#include "P2Data.h"
+
+template<class T>
+AddableVector<T> AddableVector<T>::mul_by_X_i(int j,
+        const FHE_PK& pk) const
+{
+    int phi_m = this->size();
+    assert(phi_m == pk.get_params().phi_m());
+    AddableVector res(phi_m);
+    for (int i = 0; i < phi_m; i++)
+    {
+        int k = j + i, s = 1;
+        while (k >= phi_m)
+        {
+            k -= phi_m;
+            s = -s;
+        }
+        if (s == 1)
+        {
+            res[k] = (*this)[i];
+        }
+        else
+        {
+            res[k] = -(*this)[i];
+        }
+    }
+    return res;
+}