sysdeps/sparc/fpu/bits/mathinline.h

   1 /* Inline math functions for SPARC.
   2    Copyright (C) 1999-2015 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Jakub Jelinek <jakub@redhat.com>.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef _MATH_H
  21 # error "Never use <bits/mathinline.h> directly; include <math.h> instead."
  22 #endif
  23
  24 #include <bits/wordsize.h>
  25
  26 #ifdef __GNUC__
  27
  28 #if defined __USE_ISOC99 && !__GNUC_PREREQ (3, 0)
  29 # undef isgreater
  30 # undef isgreaterequal
  31 # undef isless
  32 # undef islessequal
  33 # undef islessgreater
  34 # undef isunordered
  35
  36 # if __WORDSIZE == 32
  37
  38 #  ifndef __NO_LONG_DOUBLE_MATH
  39
  40 #   define __unordered_cmp(x, y) \
  41   (__extension__                                                              \
  42    ({ unsigned __r;                                                           \
  43       if (sizeof (x) == 4 && sizeof (y) == 4)                                 \
  44         {                                                                     \
  45           float __x = (x); float __y = (y);                                   \
  46           __asm__ ("fcmps %1,%2; st %%fsr, %0" : "=m" (__r) : "f" (__x),      \
  47                    "f" (__y) : "cc");                                         \
  48         }                                                                     \
  49       else if (sizeof (x) <= 8 && sizeof (y) <= 8)                            \
  50         {                                                                     \
  51           double __x = (x); double __y = (y);                                 \
  52           __asm__ ("fcmpd\t%1,%2\n\tst\t%%fsr,%0" : "=m" (__r) : "f" (__x),   \
  53                    "f" (__y) : "cc");                                         \
  54         }                                                                     \
  55       else                                                                    \
  56         {                                                                     \
  57           long double __x = (x); long double __y = (y);                       \
  58           extern int _Q_cmp (const long double a, const long double b);       \
  59           __r = _Q_cmp (__x, __y) << 10;                                      \
  60         }                                                                     \
  61       __r; }))
  62
  63 #  else
  64
  65 #   define __unordered_cmp(x, y) \
  66   (__extension__                                                              \
  67    ({ unsigned __r;                                                           \
  68       if (sizeof (x) == 4 && sizeof (y) == 4)                                 \
  69         {                                                                     \
  70           float __x = (x); float __y = (y);                                   \
  71           __asm__ ("fcmps %1,%2; st %%fsr, %0" : "=m" (__r) : "f" (__x),      \
  72                    "f" (__y) : "cc");                                         \
  73         }                                                                     \
  74       else                                                                    \
  75         {                                                                     \
  76           double __x = (x); double __y = (y);                                 \
  77           __asm__ ("fcmpd\t%1,%2\n\tst\t%%fsr,%0" : "=m" (__r) : "f" (__x),   \
  78                    "f" (__y) : "cc");                                         \
  79         }                                                                     \
  80       __r; }))
  81
  82 #  endif
  83
  84 #  define isgreater(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (2 << 10))
  85 #  define isgreaterequal(x, y) ((__unordered_cmp (x, y) & (1 << 10)) == 0)
  86 #  define isless(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (1 << 10))
  87 #  define islessequal(x, y) ((__unordered_cmp (x, y) & (2 << 10)) == 0)
  88 #  define islessgreater(x, y) (((__unordered_cmp (x, y) + (1 << 10)) & (2 << 10)) != 0)
  89 #  define isunordered(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (3 << 10))
  90
  91 # else /* sparc64 */
  92
  93 #  define __unordered_v9cmp(x, y, op, qop) \
  94   (__extension__                                                              \
  95    ({ unsigned __r;                                                           \
  96       if (sizeof (x) == 4 && sizeof (y) == 4)                                 \
  97         {                                                                     \
  98           float __x = (x); float __y = (y);                                   \
  99           __asm__ ("fcmps\t%%fcc3,%1,%2\n\tmov" op "\t%%fcc3,1,%0"            \
 100                    : "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc");      \
 101         }                                                                     \
 102       else if (sizeof (x) <= 8 && sizeof (y) <= 8)                            \
 103         {                                                                     \
 104           double __x = (x); double __y = (y);                                 \
 105           __asm__ ("fcmpd\t%%fcc3,%1,%2\n\tmov" op "\t%%fcc3,1,%0"            \
 106                    : "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc");      \
 107         }                                                                     \
 108       else                                                                    \
 109         {                                                                     \
 110           long double __x = (x); long double __y = (y);                       \
 111           extern int _Qp_cmp (const long double *a, const long double *b);    \
 112           __r = qop;                                                          \
 113         }                                                                     \
 114       __r; }))
 115
 116 #  define isgreater(x, y) __unordered_v9cmp(x, y, "g", _Qp_cmp (&__x, &__y) == 2)
 117 #  define isgreaterequal(x, y) __unordered_v9cmp(x, y, "ge", (_Qp_cmp (&__x, &__y) & 1) == 0)
 118 #  define isless(x, y) __unordered_v9cmp(x, y, "l", _Qp_cmp (&__x, &__y) == 1)
 119 #  define islessequal(x, y) __unordered_v9cmp(x, y, "le", (_Qp_cmp (&__x, &__y) & 2) == 0)
 120 #  define islessgreater(x, y) __unordered_v9cmp(x, y, "lg", ((_Qp_cmp (&__x, &__y) + 1) & 2) != 0)
 121 #  define isunordered(x, y) __unordered_v9cmp(x, y, "u", _Qp_cmp (&__x, &__y) == 3)
 122
 123 # endif /* sparc64 */
 124
 125 #endif /* __USE_ISOC99 */
 126
 127 #if (!defined __NO_MATH_INLINES || defined __LIBC_INTERNAL_MATH_INLINES) && defined __OPTIMIZE__
 128
 129 # ifndef __extern_inline
 130 #  define __MATH_INLINE __inline
 131 # else
 132 #  define __MATH_INLINE __extern_inline
 133 # endif  /* __cplusplus */
 134
 135 /* The gcc, version 2.7 or below, has problems with all this inlining
 136    code.  So disable it for this version of the compiler.  */
 137 # if __GNUC_PREREQ (2, 8)
 138
 139 #  ifdef __USE_ISOC99
 140
 141 /* Test for negative number.  Used in the signbit() macro.  */
 142 __MATH_INLINE int
 143 __NTH (__signbitf (float __x))
 144 {
 145   __extension__ union { float __f; int __i; } __u = { __f: __x };
 146   return __u.__i < 0;
 147 }
 148
 149 #   if __WORDSIZE == 32
 150
 151 __MATH_INLINE int
 152 __NTH (__signbit (double __x))
 153 {
 154   __extension__ union { double __d; int __i[2]; } __u = { __d: __x };
 155   return __u.__i[0] < 0;
 156 }
 157
 158 #    ifndef __NO_LONG_DOUBLE_MATH
 159 __MATH_INLINE int
 160 __NTH (__signbitl (long double __x))
 161 {
 162   __extension__ union { long double __l; int __i[4]; } __u = { __l: __x };
 163   return __u.__i[0] < 0;
 164 }
 165 #    else
 166 __MATH_INLINE int
 167 __NTH (__signbitl (long double __x))
 168 {
 169   return __signbit ((double)__x);
 170 }
 171 #    endif
 172
 173 #   else /* sparc64 */
 174
 175 __MATH_INLINE int
 176 __NTH (__signbit (double __x))
 177 {
 178   __extension__ union { double __d; long int __i; } __u = { __d: __x };
 179   return __u.__i < 0;
 180 }
 181
 182 __MATH_INLINE int
 183 __NTH (__signbitl (long double __x))
 184 {
 185   __extension__ union { long double __l; long int __i[2]; } __u = { __l: __x };
 186   return __u.__i[0] < 0;
 187 }
 188
 189 #   endif /* sparc64 */
 190
 191 #  endif /* __USE_ISOC99 */
 192
 193 #  if !defined __NO_MATH_INLINES && !__GNUC_PREREQ (3, 2)
 194
 195 __MATH_INLINE double
 196 __NTH (sqrt (double __x))
 197 {
 198   register double __r;
 199   __asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
 200   return __r;
 201 }
 202
 203 __MATH_INLINE float
 204 __NTH (sqrtf (float __x))
 205 {
 206   register float __r;
 207   __asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
 208   return __r;
 209 }
 210
 211 #   if __WORDSIZE == 64
 212 __MATH_INLINE long double
 213 __NTH (sqrtl (long double __x))
 214 {
 215   long double __r;
 216   extern void _Qp_sqrt (long double *, const long double *);
 217   _Qp_sqrt (&__r, &__x);
 218   return __r;
 219 }
 220 #   elif !defined __NO_LONG_DOUBLE_MATH
 221 __MATH_INLINE long double
 222 sqrtl (long double __x) __THROW
 223 {
 224   extern long double _Q_sqrt (const long double);
 225   return _Q_sqrt (__x);
 226 }
 227 #   endif /* sparc64 */
 228
 229 #  endif /* !__NO_MATH_INLINES && !GCC 3.2+ */
 230
 231 /* This code is used internally in the GNU libc.  */
 232 #  ifdef __LIBC_INTERNAL_MATH_INLINES
 233 __MATH_INLINE double
 234 __ieee754_sqrt (double __x)
 235 {
 236   register double __r;
 237   __asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
 238   return __r;
 239 }
 240
 241 __MATH_INLINE float
 242 __ieee754_sqrtf (float __x)
 243 {
 244   register float __r;
 245   __asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
 246   return __r;
 247 }
 248
 249 #   if __WORDSIZE == 64
 250 __MATH_INLINE long double
 251 __ieee754_sqrtl (long double __x)
 252 {
 253   long double __r;
 254   extern void _Qp_sqrt (long double *, const long double *);
 255   _Qp_sqrt(&__r, &__x);
 256   return __r;
 257 }
 258 #   elif !defined __NO_LONG_DOUBLE_MATH
 259 __MATH_INLINE long double
 260 __ieee754_sqrtl (long double __x)
 261 {
 262   extern long double _Q_sqrt (const long double);
 263   return _Q_sqrt (__x);
 264 }
 265 #   endif /* sparc64 */
 266 #  endif /* __LIBC_INTERNAL_MATH_INLINES */
 267 # endif /* gcc 2.8+ */
 268
 269 # ifdef __USE_ISOC99
 270
 271 #  ifndef __NO_MATH_INLINES
 272
 273 __MATH_INLINE double __NTH (fdim (double __x, double __y));
 274 __MATH_INLINE double
 275 __NTH (fdim (double __x, double __y))
 276 {
 277   return __x <= __y ? 0 : __x - __y;
 278 }
 279
 280 __MATH_INLINE float __NTH (fdimf (float __x, float __y));
 281 __MATH_INLINE float
 282 __NTH (fdimf (float __x, float __y))
 283 {
 284   return __x <= __y ? 0 : __x - __y;
 285 }
 286
 287 #  endif /* !__NO_MATH_INLINES */
 288 # endif /* __USE_ISOC99 */
 289 #endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */
 290 #endif /* __GNUC__ */