summaryrefslogtreecommitdiff
path: root/sysdeps/sparc/fpu/bits/mathinline.h
blob: 9017be354483b1823d8fa20a3a73ca945e72d553 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
/* Inline math functions for SPARC.
   Copyright (C) 1999 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Jakub Jelinek <jj@ultra.linux.cz>.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  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

#include <bits/wordsize.h>

#if defined __GNUC__

#ifdef __USE_ISOC9X

#if __WORDSIZE == 32

# define __unordered_cmp(x, y) \
  (__extension__							      \
   ({ unsigned __r;							      \
      if (sizeof(x) == 4 && sizeof(y) == 4)				      \
	{								      \
	  float __x = (x); float __y = (y);				      \
	  __asm__("fcmps %1,%2; st %%fsr, %0" : "=m" (__r) : "f" (__x),	      \
		  "f" (__y) : "cc");					      \
	}								      \
      else								      \
	{								      \
	  double __x = (x); double __y = (y);				      \
	  __asm__("fcmpd\t%1,%2\n\tst\t%%fsr,%0" : "=m" (__r) : "f" (__x),    \
		  "f" (__y) : "cc");					      \
	}								      \
      __r; }))

# define isgreater(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (2 << 10))
# define isgreaterequal(x, y) ((__unordered_cmp (x, y) & (1 << 10)) == 0)
# define isless(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (1 << 10))
# define islessequal(x, y) ((__unordered_cmp (x, y) & (2 << 10)) == 0)
# define islessgreater(x, y) (((__unordered_cmp (x, y) + (1 << 10)) & (2 << 10)) != 0)
# define isunordered(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (3 << 10))

#else /* sparc64 */

# define __unordered_v9cmp(x, y, op, qop) \
  (__extension__							      \
   ({ unsigned __r;						      	      \
      if (sizeof(x) == 4 && sizeof(y) == 4)				      \
	{								      \
	  float __x = (x); float __y = (y);				      \
	  __asm__("fcmps\t%%fcc3,%1,%2\n\tmov" ## op ## "\t%%fcc3,1,%0"	      \
		  : "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc");	      \
	}								      \
      else if (sizeof(x) <= 8 && sizeof(y) <= 8)			      \
	{								      \
	  double __x = (x); double __y = (y);				      \
	  __asm__("fcmpd\t%%fcc3,%1,%2\n\tmov" ## op ## "\t%%fcc3,1,%0"	      \
		  : "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc");	      \
	}								      \
      else								      \
	{								      \
	  long double __x = (x); long double __y = (y);			      \
	  extern int _Qp_cmp(const long double *a, const long double *b);     \
	  __r = qop;						      	      \
	}								      \
      __r; }))
      
# define isgreater(x, y) __unordered_v9cmp(x, y, "g", _Qp_cmp (&__x, &__y) == 2)
# define isgreaterequal(x, y) __unordered_v9cmp(x, y, "ge", (_Qp_cmp (&__x, &__y) & 1) == 0)
# define isless(x, y) __unordered_v9cmp(x, y, "l", _Qp_cmp (&__x, &__y) == 1)
# define islessequal(x, y) __unordered_v9cmp(x, y, "le", (_Qp_cmp (&__x, &__y) & 2) == 0)
# define islessgreater(x, y) __unordered_v9cmp(x, y, "lg", ((_Qp_cmp (&__x, &__y) + 1) & 2) != 0)
# define isunordered(x, y) __unordered_v9cmp(x, y, "u", _Qp_cmp (&__x, &__y) == 3)

#endif /* sparc64 */

#endif /* __USE_ISOC9X */

#if (!defined __NO_MATH_INLINES || defined __LIBC_INTERNAL_MATH_INLINES) && defined __OPTIMIZE__

#ifdef __cplusplus
# define __MATH_INLINE __inline
#else
# define __MATH_INLINE extern __inline
#endif  /* __cplusplus */

/* 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__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 7))
   /* Test for negative number.  Used in the signbit() macro.  */
__MATH_INLINE int
__signbitf (float __x)
{
  __extension__ union { float __f; int __i; } __u = { __f: __x };
  return __u.__i < 0;
}

__MATH_INLINE int
__signbit (double __x)
{
  __extension__ union { double __d; int __i[2]; } __u = { __d: __x };
  return __u.__i[0] < 0;
}

__MATH_INLINE int
__signbitl (long double __x)
{
  if (sizeof(long double) == 8)
    {
      __extension__ union { long double __l; int __i[2]; } __u = { __l: __x };
      return __u.__i[0] < 0;
    }
  else
    {
      __extension__ union { long double __l; int __i[4]; } __u = { __l: __x };
      return __u.__i[0] < 0;
    }
}

__MATH_INLINE double
sqrt(double __x)
{
  register double __r;
  __asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
  return __r;
}

__MATH_INLINE float
sqrtf(float __x)
{
  register float __r;
  __asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
  return __r;
}

#if __WORDSIZE == 64
__MATH_INLINE long double
sqrtl(long double __x)
{
  long double __r;
  extern void _Qp_sqrt(long double *, __const__ long double *);
  _Qp_sqrt(&__r, &__x);
  return __r;
}
#endif /* sparc64 */

/* This code is used internally in the GNU libc.  */
#ifdef __LIBC_INTERNAL_MATH_INLINES
__MATH_INLINE double
__ieee754_sqrt(double __x)
{
  register double __r;
  __asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
  return __r;
}

__MATH_INLINE float
__ieee754_sqrtf(float __x)
{
  register float __r;
  __asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
  return __r;
}

#if __WORDSIZE == 64
__MATH_INLINE long double
__ieee754_sqrtl(long double __x)
{
  long double __r;
  extern void _Qp_sqrt(long double *, __const__ long double *);
  _Qp_sqrt(&__r, &__x);
  return __r;
}
#endif /* sparc64 */
#endif /* __LIBC_INTERNAL_MATH_INLINES */
#endif /* gcc 2.8+ */

#ifdef __USE_ISOC9X

__MATH_INLINE double fdim (double __x, double __y);
__MATH_INLINE double
fdim (double __x, double __y)
{
  return __x < __y ? 0 : __x - __y;
}

__MATH_INLINE float fdimf (float __x, float __y);
__MATH_INLINE float
fdimf (float __x, float __y)
{
  return __x < __y ? 0 : __x - __y;
}

#endif /* __USE_ISOC9X */
#endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */
#endif /* __GNUC__ */