1 /* Inline math functions for Alpha.
2 Copyright (C) 1996, 1997, 1999-2001, 2004, 2007
3 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5 Contributed by David Mosberger-Tang.
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library. If not, see
19 <http://www.gnu.org/licenses/>. */
22 # error "Never use <bits/mathinline.h> directly; include <math.h> instead."
25 #ifndef __extern_inline
26 # define __MATH_INLINE __inline
28 # define __MATH_INLINE __extern_inline
31 #if defined __USE_ISOC99 && defined __GNUC__ && !__GNUC_PREREQ(3,0)
33 # undef isgreaterequal
38 # define isunordered(u, v) \
40 ({ double __r, __u = (u), __v = (v); \
41 __asm ("cmptun/su %1,%2,%0\n\ttrapb" \
42 : "=&f" (__r) : "f" (__u), "f"(__v)); \
46 #if (!defined __NO_MATH_INLINES || defined __LIBC_INTERNAL_MATH_INLINES) \
47 && defined __OPTIMIZE__
49 #if !__GNUC_PREREQ (4, 0)
50 # define __inline_copysign(NAME, TYPE) \
52 __NTH (NAME (TYPE __x, TYPE __y)) \
55 __asm ("cpys %1, %2, %0" : "=f" (__z) : "f" (__y), "f" (__x)); \
59 __inline_copysign (__copysignf
, float)
60 __inline_copysign (copysignf
, float)
61 __inline_copysign (__copysign
, double)
62 __inline_copysign (copysign
, double)
64 # undef __inline_copysign
68 #if !__GNUC_PREREQ (2, 8)
69 # define __inline_fabs(NAME, TYPE) \
71 __NTH (NAME (TYPE __x)) \
74 __asm ("cpys $f31, %1, %0" : "=f" (__z) : "f" (__x)); \
78 __inline_fabs (__fabsf
, float)
79 __inline_fabs (fabsf
, float)
80 __inline_fabs (__fabs
, double)
81 __inline_fabs (fabs
, double)
88 /* Test for negative number. Used in the signbit() macro. */
90 __NTH (__signbitf (float __x
))
92 #if !__GNUC_PREREQ (4, 0)
93 __extension__
union { float __f
; int __i
; } __u
= { __f
: __x
};
96 return __builtin_signbitf (__x
);
101 __NTH (__signbit (double __x
))
103 #if !__GNUC_PREREQ (4, 0)
104 __extension__
union { double __d
; long __i
; } __u
= { __d
: __x
};
107 return __builtin_signbit (__x
);
112 __NTH (__signbitl (long double __x
))
114 #if !__GNUC_PREREQ (4, 0)
115 __extension__
union {
117 long __i
[sizeof(long double)/sizeof(long)];
118 } __u
= { __d
: __x
};
119 return __u
.__i
[sizeof(long double)/sizeof(long) - 1] < 0;
121 return __builtin_signbitl (__x
);
125 /* Test for NaN. Used in the isnan() macro. */
128 __NTH (__isnanf (float __x
))
130 return isunordered (__x
, __x
);
134 __NTH (__isnan (double __x
))
136 return isunordered (__x
, __x
);
139 #ifndef __NO_LONG_DOUBLE_MATH
141 __NTH (__isnanl (long double __x
))
143 return isunordered (__x
, __x
);
149 #endif /* __NO_MATH_INLINES */