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diff --git a/casa/covering/cost/CoverageCost.H b/casa/covering/cost/CoverageCost.H
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+// Copyright 2008, 2009 Brady J. Garvin
+
+// This file is part of Covering Arrays by Simulated Annealing (CASA).
+
+// CASA is free software: you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// CASA is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with CASA.  If not, see <http://www.gnu.org/licenses/>.
+
+
+#ifndef COVERAGE_COST_H
+#define COVERAGE_COST_H
+
+#include <cassert>
+
+class CoverageCost {
+protected:
+  unsigned				noncoverage;
+  unsigned				multipleCoverage;
+
+public:
+  // So we can initialize an object from a literal zero:
+  CoverageCost(unsigned zero = 0) :
+    noncoverage(0),
+    multipleCoverage(0) {
+    assert(!zero);
+  }
+  CoverageCost(unsigned noncoverage, unsigned multipleCoverage) :
+    noncoverage(noncoverage),
+    multipleCoverage(multipleCoverage) {}
+
+  unsigned getNoncoverage() const {
+    return noncoverage;
+  }
+  unsigned getMultipleCoverage() const {
+    return multipleCoverage;
+  }
+
+  bool operator <(const CoverageCost&other) const {
+    if (noncoverage < other.noncoverage) {
+      return true;
+    }
+    if (noncoverage > other.noncoverage) {
+      return false;
+    }
+    return multipleCoverage < other.multipleCoverage;
+  }
+  bool operator <=(const CoverageCost&other) const {
+    if (noncoverage < other.noncoverage) {
+      return true;
+    }
+    if (noncoverage > other.noncoverage) {
+      return false;
+    }
+    return multipleCoverage <= other.multipleCoverage;
+  }
+  bool operator ==(const CoverageCost&other) const {
+    return
+      noncoverage == other.noncoverage &&
+      multipleCoverage == other.multipleCoverage;
+  }
+};
+
+#endif