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/* Inline math functions for Alpha.
Copyright (C) 1996, 1997, 1999-2001, 2004, 2007
Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by David Mosberger-Tang.
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
#ifndef __extern_inline
# define __MATH_INLINE __inline
#else
# define __MATH_INLINE __extern_inline
#endif
#if defined __USE_ISOC99 && defined __GNUC__ && !__GNUC_PREREQ(3,0)
# undef isgreater
# undef isgreaterequal
# undef isless
# undef islessequal
# undef islessgreater
# undef isunordered
# define isunordered(u, v) \
(__extension__ \
({ double __r, __u = (u), __v = (v); \
__asm ("cmptun/su %1,%2,%0\n\ttrapb" \
: "=&f" (__r) : "f" (__u), "f"(__v)); \
__r != 0; }))
#endif /* ISO C99 */
#if (!defined __NO_MATH_INLINES || defined __LIBC_INTERNAL_MATH_INLINES) \
&& defined __OPTIMIZE__
#if !__GNUC_PREREQ (4, 0)
# define __inline_copysign(NAME, TYPE) \
__MATH_INLINE TYPE \
__NTH (NAME (TYPE __x, TYPE __y)) \
{ \
TYPE __z; \
__asm ("cpys %1, %2, %0" : "=f" (__z) : "f" (__y), "f" (__x)); \
return __z; \
}
__inline_copysign (__copysignf, float)
__inline_copysign (copysignf, float)
__inline_copysign (__copysign, double)
__inline_copysign (copysign, double)
# undef __inline_copysign
#endif
#if !__GNUC_PREREQ (2, 8)
# define __inline_fabs(NAME, TYPE) \
__MATH_INLINE TYPE \
__NTH (NAME (TYPE __x)) \
{ \
TYPE __z; \
__asm ("cpys $f31, %1, %0" : "=f" (__z) : "f" (__x)); \
return __z; \
}
__inline_fabs (__fabsf, float)
__inline_fabs (fabsf, float)
__inline_fabs (__fabs, double)
__inline_fabs (fabs, double)
# undef __inline_fabs
#endif
#ifdef __USE_ISOC99
/* Test for negative number. Used in the signbit() macro. */
__MATH_INLINE int
__NTH (__signbitf (float __x))
{
#if !__GNUC_PREREQ (4, 0)
__extension__ union { float __f; int __i; } __u = { __f: __x };
return __u.__i < 0;
#else
return __builtin_signbitf (__x);
#endif
}
__MATH_INLINE int
__NTH (__signbit (double __x))
{
#if !__GNUC_PREREQ (4, 0)
__extension__ union { double __d; long __i; } __u = { __d: __x };
return __u.__i < 0;
#else
return __builtin_signbit (__x);
#endif
}
__MATH_INLINE int
__NTH (__signbitl (long double __x))
{
#if !__GNUC_PREREQ (4, 0)
__extension__ union {
long double __d;
long __i[sizeof(long double)/sizeof(long)];
} __u = { __d: __x };
return __u.__i[sizeof(long double)/sizeof(long) - 1] < 0;
#else
return __builtin_signbitl (__x);
#endif
}
/* Test for NaN. Used in the isnan() macro. */
__MATH_INLINE int
__NTH (__isnanf (float __x))
{
return isunordered (__x, __x);
}
__MATH_INLINE int
__NTH (__isnan (double __x))
{
return isunordered (__x, __x);
}
#ifndef __NO_LONG_DOUBLE_MATH
__MATH_INLINE int
__NTH (__isnanl (long double __x))
{
return isunordered (__x, __x);
}
#endif
#endif /* C99 */
#endif /* __NO_MATH_INLINES */
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