/* Inline math functions for ia64. Copyright (C) 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. 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, see <http://www.gnu.org/licenses/>. */ #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 /* The gcc, version 2.7 or below, has problems with all this inlining code. So disable it for this version of the compiler. */ # if __GNUC_PREREQ (2, 8) /* 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 #endif