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diff --git a/ext/mcpat/cacti/component.h b/ext/mcpat/cacti/component.h
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+/*****************************************************************************
+ *                                McPAT/CACTI
+ *                      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.”
+ *
+ ***************************************************************************/
+
+
+
+#ifndef __COMPONENT_H__
+#define __COMPONENT_H__
+
+#include "area.h"
+#include "parameter.h"
+
+using namespace std;
+
+class Crossbar;
+class Bank;
+
+class Component
+{
+  public:
+    Component();
+    ~Component();
+
+    Area area;
+    powerDef power,rt_power;
+    double delay;
+    double cycle_time;
+
+    double compute_gate_area(
+        int gate_type,
+        int num_inputs,
+        double w_pmos,
+        double w_nmos,
+        double h_gate);
+
+    double compute_tr_width_after_folding(double input_width, double threshold_folding_width);
+    double height_sense_amplifier(double pitch_sense_amp);
+
+  protected:
+    int logical_effort(
+        int    num_gates_min,
+        double g,
+        double F,
+        double * w_n,
+        double * w_p,
+        double C_load,
+        double p_to_n_sz_ratio,
+        bool   is_dram_,
+        bool   is_wl_tr_,
+        double max_w_nmos);
+
+  private:
+    double compute_diffusion_width(int num_stacked_in, int num_folded_tr);
+};
+
+#endif
+