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abfbdde1 1/* Inline math functions for SPARC.
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2 Copyright (C) 1999, 2000, 2001, 2002, 2004, 2006
3 Free Software Foundation, Inc.
abfbdde1 4 This file is part of the GNU C Library.
5e20fde1 5 Contributed by Jakub Jelinek <jakub@redhat.com>.
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6
7 The GNU C Library is free software; you can redistribute it and/or
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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.
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11
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
41bdb6e2 15 Lesser General Public License for more details.
abfbdde1 16
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17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; if not, write to the Free
19 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 02111-1307 USA. */
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21
22#ifndef _MATH_H
23# error "Never use <bits/mathinline.h> directly; include <math.h> instead."
24#endif
25
26#include <bits/wordsize.h>
27
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28#ifdef __GNUC__
29
3dbfd811 30#if defined __USE_ISOC99 && !__GNUC_PREREQ (3, 0)
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31# undef isgreater
32# undef isgreaterequal
33# undef isless
34# undef islessequal
35# undef islessgreater
36# undef isunordered
abfbdde1 37
4e735c9a 38# if __WORDSIZE == 32
abfbdde1 39
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40# ifndef __NO_LONG_DOUBLE_MATH
41
42# define __unordered_cmp(x, y) \
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43 (__extension__ \
44 ({ unsigned __r; \
0ecb606c 45 if (sizeof (x) == 4 && sizeof (y) == 4) \
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46 { \
47 float __x = (x); float __y = (y); \
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48 __asm__ ("fcmps %1,%2; st %%fsr, %0" : "=m" (__r) : "f" (__x), \
49 "f" (__y) : "cc"); \
50 } \
51 else if (sizeof (x) <= 8 && sizeof (y) <= 8) \
52 { \
53 double __x = (x); double __y = (y); \
54 __asm__ ("fcmpd\t%1,%2\n\tst\t%%fsr,%0" : "=m" (__r) : "f" (__x), \
55 "f" (__y) : "cc"); \
56 } \
57 else \
58 { \
59 long double __x = (x); long double __y = (y); \
60 extern int _Q_cmp (const long double a, const long double b); \
61 __r = _Q_cmp (__x, __y) << 10; \
62 } \
63 __r; }))
64
65# else
66
67# define __unordered_cmp(x, y) \
68 (__extension__ \
69 ({ unsigned __r; \
70 if (sizeof (x) == 4 && sizeof (y) == 4) \
71 { \
72 float __x = (x); float __y = (y); \
73 __asm__ ("fcmps %1,%2; st %%fsr, %0" : "=m" (__r) : "f" (__x), \
74 "f" (__y) : "cc"); \
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75 } \
76 else \
77 { \
78 double __x = (x); double __y = (y); \
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79 __asm__ ("fcmpd\t%1,%2\n\tst\t%%fsr,%0" : "=m" (__r) : "f" (__x), \
80 "f" (__y) : "cc"); \
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81 } \
82 __r; }))
83
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84# endif
85
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86# define isgreater(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (2 << 10))
87# define isgreaterequal(x, y) ((__unordered_cmp (x, y) & (1 << 10)) == 0)
88# define isless(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (1 << 10))
89# define islessequal(x, y) ((__unordered_cmp (x, y) & (2 << 10)) == 0)
90# define islessgreater(x, y) (((__unordered_cmp (x, y) + (1 << 10)) & (2 << 10)) != 0)
91# define isunordered(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (3 << 10))
abfbdde1 92
4e735c9a 93# else /* sparc64 */
abfbdde1 94
4e735c9a 95# define __unordered_v9cmp(x, y, op, qop) \
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96 (__extension__ \
97 ({ unsigned __r; \
0ecb606c 98 if (sizeof (x) == 4 && sizeof (y) == 4) \
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99 { \
100 float __x = (x); float __y = (y); \
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101 __asm__ ("fcmps\t%%fcc3,%1,%2\n\tmov" op "\t%%fcc3,1,%0" \
102 : "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc"); \
abfbdde1 103 } \
0ecb606c 104 else if (sizeof (x) <= 8 && sizeof (y) <= 8) \
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105 { \
106 double __x = (x); double __y = (y); \
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107 __asm__ ("fcmpd\t%%fcc3,%1,%2\n\tmov" op "\t%%fcc3,1,%0" \
108 : "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc"); \
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109 } \
110 else \
111 { \
112 long double __x = (x); long double __y = (y); \
0ecb606c 113 extern int _Qp_cmp (const long double *a, const long double *b); \
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114 __r = qop; \
115 } \
116 __r; }))
ec751a23 117
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118# define isgreater(x, y) __unordered_v9cmp(x, y, "g", _Qp_cmp (&__x, &__y) == 2)
119# define isgreaterequal(x, y) __unordered_v9cmp(x, y, "ge", (_Qp_cmp (&__x, &__y) & 1) == 0)
120# define isless(x, y) __unordered_v9cmp(x, y, "l", _Qp_cmp (&__x, &__y) == 1)
121# define islessequal(x, y) __unordered_v9cmp(x, y, "le", (_Qp_cmp (&__x, &__y) & 2) == 0)
122# define islessgreater(x, y) __unordered_v9cmp(x, y, "lg", ((_Qp_cmp (&__x, &__y) + 1) & 2) != 0)
123# define isunordered(x, y) __unordered_v9cmp(x, y, "u", _Qp_cmp (&__x, &__y) == 3)
abfbdde1 124
4e735c9a 125# endif /* sparc64 */
abfbdde1 126
ec751a23 127#endif /* __USE_ISOC99 */
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128
129#if (!defined __NO_MATH_INLINES || defined __LIBC_INTERNAL_MATH_INLINES) && defined __OPTIMIZE__
130
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131# ifdef __cplusplus
132# define __MATH_INLINE __inline
133# else
134# define __MATH_INLINE extern __inline
135# endif /* __cplusplus */
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136
137/* The gcc, version 2.7 or below, has problems with all this inlining
138 code. So disable it for this version of the compiler. */
beaaf574 139# if __GNUC_PREREQ (2, 8)
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140
141# ifdef __USE_ISOC99
142
143/* Test for negative number. Used in the signbit() macro. */
abfbdde1 144__MATH_INLINE int
5ca3d19c 145__NTH (__signbitf (float __x))
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146{
147 __extension__ union { float __f; int __i; } __u = { __f: __x };
148 return __u.__i < 0;
149}
150
4e735c9a 151# if __WORDSIZE == 32
dbbbaf53 152
abfbdde1 153__MATH_INLINE int
5ca3d19c 154__NTH (__signbit (double __x))
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155{
156 __extension__ union { double __d; int __i[2]; } __u = { __d: __x };
157 return __u.__i[0] < 0;
158}
159
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160# ifndef __NO_LONG_DOUBLE_MATH
161__MATH_INLINE int
162__NTH (__signbitl (long double __x))
163{
164 __extension__ union { long double __l; int __i[4]; } __u = { __l: __x };
165 return __u.__i[0] < 0;
166}
167# else
abfbdde1 168__MATH_INLINE int
5ca3d19c 169__NTH (__signbitl (long double __x))
abfbdde1 170{
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171 return __signbit ((double)__x);
172}
0ecb606c 173# endif
dbbbaf53 174
4e735c9a 175# else /* sparc64 */
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176
177__MATH_INLINE int
5ca3d19c 178__NTH (__signbit (double __x))
dbbbaf53 179{
4e735c9a 180 __extension__ union { double __d; long int __i; } __u = { __d: __x };
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181 return __u.__i < 0;
182}
183
184__MATH_INLINE int
5ca3d19c 185__NTH (__signbitl (long double __x))
dbbbaf53 186{
4e735c9a 187 __extension__ union { long double __l; long int __i[2]; } __u = { __l: __x };
dbbbaf53 188 return __u.__i[0] < 0;
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189}
190
4e735c9a 191# endif /* sparc64 */
dbbbaf53 192
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193# endif /* __USE_ISOC99 */
194
3dbfd811 195# if !defined __NO_MATH_INLINES && !__GNUC_PREREQ (3, 2)
7c5bb945 196
abfbdde1 197__MATH_INLINE double
5ca3d19c 198__NTH (sqrt (double __x))
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199{
200 register double __r;
201 __asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
202 return __r;
203}
204
205__MATH_INLINE float
5ca3d19c 206__NTH (sqrtf (float __x))
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207{
208 register float __r;
209 __asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
210 return __r;
211}
212
4e735c9a 213# if __WORDSIZE == 64
abfbdde1 214__MATH_INLINE long double
5ca3d19c 215__NTH (sqrtl (long double __x))
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216{
217 long double __r;
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218 extern void _Qp_sqrt (long double *, __const__ long double *);
219 _Qp_sqrt (&__r, &__x);
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220 return __r;
221}
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222# elif !defined __NO_LONG_DOUBLE_MATH
223__MATH_INLINE long double
224sqrtl (long double __x) __THROW
225{
226 extern long double _Q_sqrt (__const__ long double);
227 return _Q_sqrt (__x);
228}
4e735c9a 229# endif /* sparc64 */
abfbdde1 230
3dbfd811 231# endif /* !__NO_MATH_INLINES && !GCC 3.2+ */
7c5bb945 232
abfbdde1 233/* This code is used internally in the GNU libc. */
4e735c9a 234# ifdef __LIBC_INTERNAL_MATH_INLINES
abfbdde1 235__MATH_INLINE double
4e735c9a 236__ieee754_sqrt (double __x)
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237{
238 register double __r;
239 __asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
240 return __r;
241}
242
243__MATH_INLINE float
4e735c9a 244__ieee754_sqrtf (float __x)
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245{
246 register float __r;
247 __asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
248 return __r;
249}
250
4e735c9a 251# if __WORDSIZE == 64
abfbdde1 252__MATH_INLINE long double
4e735c9a 253__ieee754_sqrtl (long double __x)
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254{
255 long double __r;
4e735c9a 256 extern void _Qp_sqrt (long double *, __const__ long double *);
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257 _Qp_sqrt(&__r, &__x);
258 return __r;
259}
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260# elif !defined __NO_LONG_DOUBLE_MATH
261__MATH_INLINE long double
262__ieee754_sqrtl (long double __x)
263{
264 extern long double _Q_sqrt (__const__ long double);
265 return _Q_sqrt (__x);
266}
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267# endif /* sparc64 */
268# endif /* __LIBC_INTERNAL_MATH_INLINES */
269# endif /* gcc 2.8+ */
abfbdde1 270
4e735c9a 271# ifdef __USE_ISOC99
abfbdde1 272
4e735c9a 273# ifndef __NO_MATH_INLINES
7c5bb945 274
5ca3d19c 275__MATH_INLINE double __NTH (fdim (double __x, double __y));
abfbdde1 276__MATH_INLINE double
5ca3d19c 277__NTH (fdim (double __x, double __y))
abfbdde1 278{
8930fcf9 279 return __x <= __y ? 0 : __x - __y;
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280}
281
5ca3d19c 282__MATH_INLINE float __NTH (fdimf (float __x, float __y));
abfbdde1 283__MATH_INLINE float
5ca3d19c 284__NTH (fdimf (float __x, float __y))
abfbdde1 285{
8930fcf9 286 return __x <= __y ? 0 : __x - __y;
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287}
288
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289# endif /* !__NO_MATH_INLINES */
290# endif /* __USE_ISOC99 */
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291#endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */
292#endif /* __GNUC__ */