sysdeps/sparc/fpu/bits/mathinline.h

   1 /* Inline math functions for SPARC.
   2    Copyright (C) 1999, 2000, 2001, 2002, 2004 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, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #ifndef _MATH_H
  22 # error "Never use <bits/mathinline.h> directly; include <math.h> instead."
  23 #endif
  24
  25 #include <bits/wordsize.h>
  26
  27 #ifdef __GNUC__
  28
  29 #if defined __USE_ISOC99 && !__GNUC_PREREQ (3, 0)
  30 # undef isgreater
  31 # undef isgreaterequal
  32 # undef isless
  33 # undef islessequal
  34 # undef islessgreater
  35 # undef isunordered
  36
  37 # if __WORDSIZE == 32
  38
  39 #  define __unordered_cmp(x, y) \
  40   (__extension__                                                              \
  41    ({ unsigned __r;                                                           \
  42       if (sizeof(x) == 4 && sizeof(y) == 4)                                   \
  43         {                                                                     \
  44           float __x = (x); float __y = (y);                                   \
  45           __asm__("fcmps %1,%2; st %%fsr, %0" : "=m" (__r) : "f" (__x),       \
  46                   "f" (__y) : "cc");                                          \
  47         }                                                                     \
  48       else                                                                    \
  49         {                                                                     \
  50           double __x = (x); double __y = (y);                                 \
  51           __asm__("fcmpd\t%1,%2\n\tst\t%%fsr,%0" : "=m" (__r) : "f" (__x),    \
  52                   "f" (__y) : "cc");                                          \
  53         }                                                                     \
  54       __r; }))
  55
  56 #  define isgreater(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (2 << 10))
  57 #  define isgreaterequal(x, y) ((__unordered_cmp (x, y) & (1 << 10)) == 0)
  58 #  define isless(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (1 << 10))
  59 #  define islessequal(x, y) ((__unordered_cmp (x, y) & (2 << 10)) == 0)
  60 #  define islessgreater(x, y) (((__unordered_cmp (x, y) + (1 << 10)) & (2 << 10)) != 0)
  61 #  define isunordered(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (3 << 10))
  62
  63 # else /* sparc64 */
  64
  65 #  define __unordered_v9cmp(x, y, op, qop) \
  66   (__extension__                                                              \
  67    ({ unsigned __r;                                                           \
  68       if (sizeof(x) == 4 && sizeof(y) == 4)                                   \
  69         {                                                                     \
  70           float __x = (x); float __y = (y);                                   \
  71           __asm__("fcmps\t%%fcc3,%1,%2\n\tmov" op "\t%%fcc3,1,%0"             \
  72                   : "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc");       \
  73         }                                                                     \
  74       else if (sizeof(x) <= 8 && sizeof(y) <= 8)                              \
  75         {                                                                     \
  76           double __x = (x); double __y = (y);                                 \
  77           __asm__("fcmpd\t%%fcc3,%1,%2\n\tmov" op "\t%%fcc3,1,%0"             \
  78                   : "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc");       \
  79         }                                                                     \
  80       else                                                                    \
  81         {                                                                     \
  82           long double __x = (x); long double __y = (y);                       \
  83           extern int _Qp_cmp(const long double *a, const long double *b);     \
  84           __r = qop;                                                          \
  85         }                                                                     \
  86       __r; }))
  87
  88 #  define isgreater(x, y) __unordered_v9cmp(x, y, "g", _Qp_cmp (&__x, &__y) == 2)
  89 #  define isgreaterequal(x, y) __unordered_v9cmp(x, y, "ge", (_Qp_cmp (&__x, &__y) & 1) == 0)
  90 #  define isless(x, y) __unordered_v9cmp(x, y, "l", _Qp_cmp (&__x, &__y) == 1)
  91 #  define islessequal(x, y) __unordered_v9cmp(x, y, "le", (_Qp_cmp (&__x, &__y) & 2) == 0)
  92 #  define islessgreater(x, y) __unordered_v9cmp(x, y, "lg", ((_Qp_cmp (&__x, &__y) + 1) & 2) != 0)
  93 #  define isunordered(x, y) __unordered_v9cmp(x, y, "u", _Qp_cmp (&__x, &__y) == 3)
  94
  95 # endif /* sparc64 */
  96
  97 #endif /* __USE_ISOC99 */
  98
  99 #if (!defined __NO_MATH_INLINES || defined __LIBC_INTERNAL_MATH_INLINES) && defined __OPTIMIZE__
 100
 101 # ifdef __cplusplus
 102 #  define __MATH_INLINE __inline
 103 # else
 104 #  define __MATH_INLINE extern __inline
 105 # endif  /* __cplusplus */
 106
 107 /* The gcc, version 2.7 or below, has problems with all this inlining
 108    code.  So disable it for this version of the compiler.  */
 109 # if __GNUC_PREREQ (2, 8)
 110
 111 #  ifdef __USE_ISOC99
 112
 113 /* Test for negative number.  Used in the signbit() macro.  */
 114 __MATH_INLINE int
 115 __NTH (__signbitf (float __x))
 116 {
 117   __extension__ union { float __f; int __i; } __u = { __f: __x };
 118   return __u.__i < 0;
 119 }
 120
 121 #   if __WORDSIZE == 32
 122
 123 __MATH_INLINE int
 124 __NTH (__signbit (double __x))
 125 {
 126   __extension__ union { double __d; int __i[2]; } __u = { __d: __x };
 127   return __u.__i[0] < 0;
 128 }
 129
 130 __MATH_INLINE int
 131 __NTH (__signbitl (long double __x))
 132 {
 133   return __signbit ((double)__x);
 134 }
 135
 136 #   else /* sparc64 */
 137
 138 __MATH_INLINE int
 139 __NTH (__signbit (double __x))
 140 {
 141   __extension__ union { double __d; long int __i; } __u = { __d: __x };
 142   return __u.__i < 0;
 143 }
 144
 145 __MATH_INLINE int
 146 __NTH (__signbitl (long double __x))
 147 {
 148   __extension__ union { long double __l; long int __i[2]; } __u = { __l: __x };
 149   return __u.__i[0] < 0;
 150 }
 151
 152 #   endif /* sparc64 */
 153
 154 #  endif /* __USE_ISOC99 */
 155
 156 #  if !defined __NO_MATH_INLINES && !__GNUC_PREREQ (3, 2)
 157
 158 __MATH_INLINE double
 159 __NTH (sqrt (double __x))
 160 {
 161   register double __r;
 162   __asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
 163   return __r;
 164 }
 165
 166 __MATH_INLINE float
 167 __NTH (sqrtf (float __x))
 168 {
 169   register float __r;
 170   __asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
 171   return __r;
 172 }
 173
 174 #   if __WORDSIZE == 64
 175 __MATH_INLINE long double
 176 __NTH (sqrtl (long double __x))
 177 {
 178   long double __r;
 179   extern void _Qp_sqrt (long double *, __const__ long double *);
 180   _Qp_sqrt (&__r, &__x);
 181   return __r;
 182 }
 183 #   endif /* sparc64 */
 184
 185 #  endif /* !__NO_MATH_INLINES && !GCC 3.2+ */
 186
 187 /* This code is used internally in the GNU libc.  */
 188 #  ifdef __LIBC_INTERNAL_MATH_INLINES
 189 __MATH_INLINE double
 190 __ieee754_sqrt (double __x)
 191 {
 192   register double __r;
 193   __asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
 194   return __r;
 195 }
 196
 197 __MATH_INLINE float
 198 __ieee754_sqrtf (float __x)
 199 {
 200   register float __r;
 201   __asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
 202   return __r;
 203 }
 204
 205 #   if __WORDSIZE == 64
 206 __MATH_INLINE long double
 207 __ieee754_sqrtl (long double __x)
 208 {
 209   long double __r;
 210   extern void _Qp_sqrt (long double *, __const__ long double *);
 211   _Qp_sqrt(&__r, &__x);
 212   return __r;
 213 }
 214 #   endif /* sparc64 */
 215 #  endif /* __LIBC_INTERNAL_MATH_INLINES */
 216 # endif /* gcc 2.8+ */
 217
 218 # ifdef __USE_ISOC99
 219
 220 #  ifndef __NO_MATH_INLINES
 221
 222 __MATH_INLINE double __NTH (fdim (double __x, double __y));
 223 __MATH_INLINE double
 224 __NTH (fdim (double __x, double __y))
 225 {
 226   return __x <= __y ? 0 : __x - __y;
 227 }
 228
 229 __MATH_INLINE float __NTH (fdimf (float __x, float __y));
 230 __MATH_INLINE float
 231 __NTH (fdimf (float __x, float __y))
 232 {
 233   return __x <= __y ? 0 : __x - __y;
 234 }
 235
 236 #  endif /* !__NO_MATH_INLINES */
 237 # endif /* __USE_ISOC99 */
 238 #endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */
 239 #endif /* __GNUC__ */