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diff --git a/src/accelwattch/basic_components.cc b/src/accelwattch/basic_components.cc
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+/*****************************************************************************
+ *                                McPAT
+ *                      SOFTWARE LICENSE AGREEMENT
+ *            Copyright 2012 Hewlett-Packard Development Company, L.P.
+ *                          All Rights Reserved
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.”
+ *
+ ***************************************************************************/
+
+#include "basic_components.h"
+#include <assert.h>
+#include <cmath>
+#include <iostream>
+
+double longer_channel_device_reduction(enum Device_ty device_ty,
+                                       enum Core_type core_ty) {
+  double longer_channel_device_percentage_core;
+  double longer_channel_device_percentage_uncore;
+  double longer_channel_device_percentage_llc;
+
+  double long_channel_device_reduction;
+
+  longer_channel_device_percentage_llc = 1.0;
+  longer_channel_device_percentage_uncore = 0.82;
+  if (core_ty == OOO) {
+    longer_channel_device_percentage_core =
+        0.56;  // 0.54 Xeon Tulsa //0.58 Nehelam
+    // longer_channel_device_percentage_uncore = 0.76;//0.85 Nehelam
+
+  } else {
+    longer_channel_device_percentage_core = 0.8;  // 0.8;//Niagara
+    // longer_channel_device_percentage_uncore = 0.9;//Niagara
+  }
+
+  if (device_ty == Core_device) {
+    long_channel_device_reduction =
+        (1 - longer_channel_device_percentage_core) +
+        longer_channel_device_percentage_core *
+            g_tp.peri_global.long_channel_leakage_reduction;
+  } else if (device_ty == Uncore_device) {
+    long_channel_device_reduction =
+        (1 - longer_channel_device_percentage_uncore) +
+        longer_channel_device_percentage_uncore *
+            g_tp.peri_global.long_channel_leakage_reduction;
+  } else if (device_ty == LLC_device) {
+    long_channel_device_reduction =
+        (1 - longer_channel_device_percentage_llc) +
+        longer_channel_device_percentage_llc *
+            g_tp.peri_global.long_channel_leakage_reduction;
+  } else {
+    cout << "unknown device category" << endl;
+    exit(0);
+  }
+
+  return long_channel_device_reduction;
+}
+
+statsComponents operator+(const statsComponents& x, const statsComponents& y) {
+  statsComponents z;
+
+  z.access = x.access + y.access;
+  z.hit = x.hit + y.hit;
+  z.miss = x.miss + y.miss;
+
+  return z;
+}
+
+statsComponents operator*(const statsComponents& x, double const* const y) {
+  statsComponents z;
+
+  z.access = x.access * y[0];
+  z.hit = x.hit * y[1];
+  z.miss = x.miss * y[2];
+
+  return z;
+}
+
+statsDef operator+(const statsDef& x, const statsDef& y) {
+  statsDef z;
+
+  z.readAc = x.readAc + y.readAc;
+  z.writeAc = x.writeAc + y.writeAc;
+  z.searchAc = x.searchAc + y.searchAc;
+  return z;
+}
+
+statsDef operator*(const statsDef& x, double const* const y) {
+  statsDef z;
+
+  z.readAc = x.readAc * y;
+  z.writeAc = x.writeAc * y;
+  z.searchAc = x.searchAc * y;
+  return z;
+}