/* Inline math functions for x86-64.   Copyright (C) 2002, 2003, 2004, 2007 Free Software Foundation, Inc.   This file is part of the GNU C Library.   Contributed by Andreas Jaeger <aj@suse.de>, 2002.   The GNU C Library is free software; you can redistribute it and/or   modify it under the terms of the GNU Lesser General Public   License as published by the Free Software Foundation; either   version 2.1 of the License, or (at your option) any later version.   The GNU C Library 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   Lesser General Public License for more details.   You should have received a copy of the GNU Lesser General Public   License along with the GNU C Library; if not, write to the Free   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA   02111-1307 USA.  */#ifndef _MATH_H# error "Never use <bits/mathinline.h> directly; include <math.h> instead."#endif#ifdef __cplusplus# define __MATH_INLINE __inline#else# define __MATH_INLINE __extern_inline#endif#if defined __USE_ISOC99 && defined __GNUC__ && __GNUC__ >= 2/* Test for negative number.  Used in the signbit() macro.  */__MATH_INLINE int__NTH (__signbitf (float __x)){  __extension__ union { float __f; int __i; } __u = { __f: __x };  return __u.__i < 0;}__MATH_INLINE int__NTH (__signbit (double __x)){  __extension__ union { double __d; int __i[2]; } __u = { __d: __x };  return __u.__i[1] < 0;}__MATH_INLINE int__NTH (__signbitl (long double __x)){  __extension__ union { long double __l; int __i[3]; } __u = { __l: __x };  return (__u.__i[2] & 0x8000) != 0;}#endif