sysdeps/sparc/fpu/bits/mathinline.h

   1 /* Inline math functions for SPARC.
   2    Copyright (C) 1999, 2000, 2001, 2002, 2004, 2006, 2007
   3    Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5    Contributed by Jakub Jelinek <jakub@redhat.com>.
   6
   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.
  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
  15    Lesser General Public License for more details.
  16
  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.  */
  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
  28 #ifdef __GNUC__
  29
  30 #if defined __USE_ISOC99 && !__GNUC_PREREQ (3, 0)
  31 # undef isgreater
  32 # undef isgreaterequal
  33 # undef isless
  34 # undef islessequal
  35 # undef islessgreater
  36 # undef isunordered
  37
  38 # if __WORDSIZE == 32
  39
  40 #  ifndef __NO_LONG_DOUBLE_MATH
  41
  42 #   define __unordered_cmp(x, y) \
  43   (__extension__                                                              \
  44    ({ unsigned __r;                                                           \
  45       if (sizeof (x) == 4 && sizeof (y) == 4)                                 \
  46         {                                                                     \
  47           float __x = (x); float __y = (y);                                   \
  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");                                         \
  75         }                                                                     \
  76       else                                                                    \
  77         {                                                                     \
  78           double __x = (x); double __y = (y);                                 \
  79           __asm__ ("fcmpd\t%1,%2\n\tst\t%%fsr,%0" : "=m" (__r) : "f" (__x),   \
  80                    "f" (__y) : "cc");                                         \
  81         }                                                                     \
  82       __r; }))
  83
  84 #  endif
  85
  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))
  92
  93 # else /* sparc64 */
  94
  95 #  define __unordered_v9cmp(x, y, op, qop) \
  96   (__extension__                                                              \
  97    ({ unsigned __r;                                                           \
  98       if (sizeof (x) == 4 && sizeof (y) == 4)                                 \
  99         {                                                                     \
 100           float __x = (x); float __y = (y);                                   \
 101           __asm__ ("fcmps\t%%fcc3,%1,%2\n\tmov" op "\t%%fcc3,1,%0"            \
 102                    : "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc");      \
 103         }                                                                     \
 104       else if (sizeof (x) <= 8 && sizeof (y) <= 8)                            \
 105         {                                                                     \
 106           double __x = (x); double __y = (y);                                 \
 107           __asm__ ("fcmpd\t%%fcc3,%1,%2\n\tmov" op "\t%%fcc3,1,%0"            \
 108                    : "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc");      \
 109         }                                                                     \
 110       else                                                                    \
 111         {                                                                     \
 112           long double __x = (x); long double __y = (y);                       \
 113           extern int _Qp_cmp (const long double *a, const long double *b);    \
 114           __r = qop;                                                          \
 115         }                                                                     \
 116       __r; }))
 117
 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)
 124
 125 # endif /* sparc64 */
 126
 127 #endif /* __USE_ISOC99 */
 128
 129 #if (!defined __NO_MATH_INLINES || defined __LIBC_INTERNAL_MATH_INLINES) && defined __OPTIMIZE__
 130
 131 # ifndef __extern_inline
 132 #  define __MATH_INLINE __inline
 133 # else
 134 #  define __MATH_INLINE __extern_inline
 135 # endif  /* __cplusplus */
 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.  */
 139 # if __GNUC_PREREQ (2, 8)
 140
 141 #  ifdef __USE_ISOC99
 142
 143 /* Test for negative number.  Used in the signbit() macro.  */
 144 __MATH_INLINE int
 145 __NTH (__signbitf (float __x))
 146 {
 147   __extension__ union { float __f; int __i; } __u = { __f: __x };
 148   return __u.__i < 0;
 149 }
 150
 151 #   if __WORDSIZE == 32
 152
 153 __MATH_INLINE int
 154 __NTH (__signbit (double __x))
 155 {
 156   __extension__ union { double __d; int __i[2]; } __u = { __d: __x };
 157   return __u.__i[0] < 0;
 158 }
 159
 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
 168 __MATH_INLINE int
 169 __NTH (__signbitl (long double __x))
 170 {
 171   return __signbit ((double)__x);
 172 }
 173 #    endif
 174
 175 #   else /* sparc64 */
 176
 177 __MATH_INLINE int
 178 __NTH (__signbit (double __x))
 179 {
 180   __extension__ union { double __d; long int __i; } __u = { __d: __x };
 181   return __u.__i < 0;
 182 }
 183
 184 __MATH_INLINE int
 185 __NTH (__signbitl (long double __x))
 186 {
 187   __extension__ union { long double __l; long int __i[2]; } __u = { __l: __x };
 188   return __u.__i[0] < 0;
 189 }
 190
 191 #   endif /* sparc64 */
 192
 193 #  endif /* __USE_ISOC99 */
 194
 195 #  if !defined __NO_MATH_INLINES && !__GNUC_PREREQ (3, 2)
 196
 197 __MATH_INLINE double
 198 __NTH (sqrt (double __x))
 199 {
 200   register double __r;
 201   __asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
 202   return __r;
 203 }
 204
 205 __MATH_INLINE float
 206 __NTH (sqrtf (float __x))
 207 {
 208   register float __r;
 209   __asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
 210   return __r;
 211 }
 212
 213 #   if __WORDSIZE == 64
 214 __MATH_INLINE long double
 215 __NTH (sqrtl (long double __x))
 216 {
 217   long double __r;
 218   extern void _Qp_sqrt (long double *, __const__ long double *);
 219   _Qp_sqrt (&__r, &__x);
 220   return __r;
 221 }
 222 #   elif !defined __NO_LONG_DOUBLE_MATH
 223 __MATH_INLINE long double
 224 sqrtl (long double __x) __THROW
 225 {
 226   extern long double _Q_sqrt (__const__ long double);
 227   return _Q_sqrt (__x);
 228 }
 229 #   endif /* sparc64 */
 230
 231 #  endif /* !__NO_MATH_INLINES && !GCC 3.2+ */
 232
 233 /* This code is used internally in the GNU libc.  */
 234 #  ifdef __LIBC_INTERNAL_MATH_INLINES
 235 __MATH_INLINE double
 236 __ieee754_sqrt (double __x)
 237 {
 238   register double __r;
 239   __asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
 240   return __r;
 241 }
 242
 243 __MATH_INLINE float
 244 __ieee754_sqrtf (float __x)
 245 {
 246   register float __r;
 247   __asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
 248   return __r;
 249 }
 250
 251 #   if __WORDSIZE == 64
 252 __MATH_INLINE long double
 253 __ieee754_sqrtl (long double __x)
 254 {
 255   long double __r;
 256   extern void _Qp_sqrt (long double *, __const__ long double *);
 257   _Qp_sqrt(&__r, &__x);
 258   return __r;
 259 }
 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 }
 267 #   endif /* sparc64 */
 268 #  endif /* __LIBC_INTERNAL_MATH_INLINES */
 269 # endif /* gcc 2.8+ */
 270
 271 # ifdef __USE_ISOC99
 272
 273 #  ifndef __NO_MATH_INLINES
 274
 275 __MATH_INLINE double __NTH (fdim (double __x, double __y));
 276 __MATH_INLINE double
 277 __NTH (fdim (double __x, double __y))
 278 {
 279   return __x <= __y ? 0 : __x - __y;
 280 }
 281
 282 __MATH_INLINE float __NTH (fdimf (float __x, float __y));
 283 __MATH_INLINE float
 284 __NTH (fdimf (float __x, float __y))
 285 {
 286   return __x <= __y ? 0 : __x - __y;
 287 }
 288
 289 #  endif /* !__NO_MATH_INLINES */
 290 # endif /* __USE_ISOC99 */
 291 #endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */
 292 #endif /* __GNUC__ */