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+/*
+ * Copyright (C) 2009 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 ANDROID_CUTILS_COMPILER_H
+#define ANDROID_CUTILS_COMPILER_H
+
+/*
+ * helps the compiler's optimizer predicting branches
+ */
+
+#ifdef __cplusplus
+# define CC_LIKELY( exp ) (__builtin_expect( !!(exp), true ))
+# define CC_UNLIKELY( exp ) (__builtin_expect( !!(exp), false ))
+#else
+# define CC_LIKELY( exp ) (__builtin_expect( !!(exp), 1 ))
+# define CC_UNLIKELY( exp ) (__builtin_expect( !!(exp), 0 ))
+#endif
+
+#endif // ANDROID_CUTILS_COMPILER_H