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-rw-r--r--src/utils/likely.h32
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diff --git a/src/utils/likely.h b/src/utils/likely.h
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+++ b/src/utils/likely.h
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+/*
+ * The ManaPlus Client
+ * Copyright (C) 2011-2017 The ManaPlus Developers
+ *
+ * This file is part of The ManaPlus Client.
+ *
+ * This program 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 2 of the License, or
+ * any later version.
+ *
+ * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef UTILS_LIKELY_H
+#define UTILS_LIKELY_H
+
+#ifdef __GNUC__
+#define A_LIKELY(x) __builtin_expect (!!(x), 1)
+#define A_UNLIKELY(x) __builtin_expect (!!(x), 0)
+#else // __GNUC__
+#define A_LIKELY(x) (x)
+#define A_UNLIKELY(x) (x)
+#endif // __GNUC__
+
+#endif // UTILS_LIKELY_H