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+/*
+ * Copyright (c) International Business Machines Corp., 2014
+ *
+ * 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
+ * (at your option) 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/*! @file builtin.h
+ *  @brief Builtin Function Macros
+ *  @author Shaun Wetzstein <shaun@us.ibm.com>
+ *  @date 2010-2011
+ */
+
+#ifndef __BUILTIN_H__
+#define __BUILTIN_H__
+
+/*!
+ * @def likely(x)
+ * @hideinitializer
+ * @brief Indicate an expression is likely to occur
+ * @param x [in] Expression
+ */
+#define likely(x)		__builtin_expect(!!(x), 1)
+
+/*!
+ * @def unlikely(x)
+ * @hideinitializer
+ * @brief Indicate an expression is unlikely to occur
+ * @param x [in] Expression
+ */
+#define unlikely(x)		__builtin_expect(!!(x), 0)
+
+/*!
+ * @def parity(x)
+ * @hideinitializer
+ * @brief Return parity of the input
+ * @param x [in] Object
+ */
+#define	parity(x)		__builtin_parity((x))
+#define	ffs(x)			__builtin_ffs((x))
+
+/*!
+ * @def popcount(x)
+ * @hideinitializer
+ * @brief Return number of 0b'1' bits of an int
+ * @param x [in] Object
+ */
+#define	popcount(x)		__builtin_popcount((x))
+
+/*!
+ * @def ctz(x)
+ * @hideinitializer
+ * @brief Count trailing zeros of an int
+ * @param x [in] @em int value
+ */
+#define	ctz(x)			__builtin_ctz((x))
+
+/*!
+ * @def ctzl(x)
+ * @hideinitializer
+ * @brief Count trailing zeros of a long
+ * @param x [in] @em long value
+ */
+#define	ctzl(x)			__builtin_ctzl((x))
+
+/*!
+ * @def ctzll(x)
+ * @hideinitializer
+ * @brief Count trailing zeros of a long long
+ * @param x [in] @em long @em long value
+ */
+#define	ctzll(x)		__builtin_ctzll((x))
+
+/*!
+ * @def clz(x)
+ * @hideinitializer
+ * @brief Count leading zeros of an int
+ * @param x [in] @em int value
+ */
+#define	clz(x)			__builtin_clzl((x))
+
+/*!
+ * @def clzl(x)
+ * @hideinitializer
+ * @brief Count leading zeros of a long
+ * @param x [in] @em long value
+ */
+#define	clzl(x)			__builtin_clzl((x))
+
+/*!
+ * @def clzll(x)
+ * @hideinitializer
+ * @brief Count leading zeros of a long long
+ * @param x [in] @em long long value
+ */
+#define	clzll(x)		__builtin_clzll((x))
+
+/*!
+ * @def caller(x)
+ * @hideinitializer
+ * @brief Return callers return address
+ * @param x [in] Function name
+ */
+#define caller(x)		__builtin_return_address((x))
+
+#define choose_expr(x,y,z)	__builtin_choose_expr((x),(y),(z))
+
+/*!
+ * @def const_expr(x)
+ * @hideinitializer
+ * @brief Return callers return address
+ * @param x [in] Function name
+ */
+#define const_expr(x)		__builtin_constant_p((x))
+
+/*!
+ * @def compatible_type(x)
+ * @hideinitializer
+ * @brief Return @em true if typeof(x) and typeof(y) are compatible
+ * @param x [in] Type name
+ * @param y [in] Type name
+ */
+#define compatible_type(x,y)	__builtin_types_compatible_p((x),(y))
+
+#endif				/* __BUILTIN_H__ */