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diff --git a/benchmarks/utils.h b/benchmarks/utils.h
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+++ b/benchmarks/utils.h
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+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef BENCHMARKS_UTILS_H
+#define BENCHMARKS_UTILS_H
+
+#include <stddef.h>
+#include <string>
+
+int Round(int n);
+std::string PrettyInt(long value, size_t base);
+
+#endif  // BENCHMARKS_UTILS_H