libc/sysdeps/linux/sparc64/bits/mathinline.h

   1 /* Inline math functions for SPARC.
   2    Copyright (C) 1999, 2000, 2001, 2002, 2004, 2006
   3    Free Software Foundation, Inc.
   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 #ifdef __GNUC__
  25
  26 #if defined __USE_ISOC99 && !__GNUC_PREREQ (3, 0)
  27 # undef isgreater
  28 # undef isgreaterequal
  29 # undef isless
  30 # undef islessequal
  31 # undef islessgreater
  32 # undef isunordered
  33
  34 # define __unordered_v9cmp(x, y, op, qop) \
  35   (__extension__                                                              \
  36    ({ unsigned __r;                                                           \
  37       if (sizeof (x) == 4 && sizeof (y) == 4)                                 \
  38         {                                                                     \
  39           float __x = (x); float __y = (y);                                   \
  40           __asm__ ("fcmps\t%%fcc3,%1,%2\n\tmov" op "\t%%fcc3,1,%0"            \
  41                    : "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc");      \
  42         }                                                                     \
  43       else if (sizeof (x) <= 8 && sizeof (y) <= 8)                            \
  44         {                                                                     \
  45           double __x = (x); double __y = (y);                                 \
  46           __asm__ ("fcmpd\t%%fcc3,%1,%2\n\tmov" op "\t%%fcc3,1,%0"            \
  47                    : "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc");      \
  48         }                                                                     \
  49       else                                                                    \
  50         {                                                                     \
  51           long double __x = (x); long double __y = (y);                       \
  52           extern int _Qp_cmp (const long double *a, const long double *b);    \
  53           __r = qop;                                                          \
  54         }                                                                     \
  55       __r; }))
  56
  57 # define isgreater(x, y) __unordered_v9cmp(x, y, "g", _Qp_cmp (&__x, &__y) == 2)
  58 # define isgreaterequal(x, y) __unordered_v9cmp(x, y, "ge", (_Qp_cmp (&__x, &__y) & 1) == 0)
  59 # define isless(x, y) __unordered_v9cmp(x, y, "l", _Qp_cmp (&__x, &__y) == 1)
  60 # define islessequal(x, y) __unordered_v9cmp(x, y, "le", (_Qp_cmp (&__x, &__y) & 2) == 0)
  61 # define islessgreater(x, y) __unordered_v9cmp(x, y, "lg", ((_Qp_cmp (&__x, &__y) + 1) & 2) != 0)
  62 # define isunordered(x, y) __unordered_v9cmp(x, y, "u", _Qp_cmp (&__x, &__y) == 3)
  63
  64 #endif /* __USE_ISOC99 */
  65
  66 #if (!defined __NO_MATH_INLINES || defined __LIBC_INTERNAL_MATH_INLINES) && defined __OPTIMIZE__
  67
  68 # ifdef __cplusplus
  69 #  define __MATH_INLINE __inline
  70 # else
  71 #  define __MATH_INLINE __extern_inline
  72 # endif  /* __cplusplus */
  73
  74 /* The gcc, version 2.7 or below, has problems with all this inlining
  75    code.  So disable it for this version of the compiler.  */
  76 # if __GNUC_PREREQ (2, 8)
  77
  78 #  ifdef __USE_ISOC99
  79
  80 /* Test for negative number.  Used in the signbit() macro.  */
  81 __MATH_INLINE int
  82 __NTH (__signbitf (float __x))
  83 {
  84   __extension__ union { float __f; int __i; } __u = { __f: __x };
  85   return __u.__i < 0;
  86 }
  87
  88 __MATH_INLINE int
  89 __NTH (__signbit (double __x))
  90 {
  91   __extension__ union { double __d; long int __i; } __u = { __d: __x };
  92   return __u.__i < 0;
  93 }
  94
  95 __MATH_INLINE int
  96 __NTH (__signbitl (long double __x))
  97 {
  98   __extension__ union { long double __l; long int __i[2]; } __u = { __l: __x };
  99   return __u.__i[0] < 0;
 100 }
 101
 102 #  endif /* __USE_ISOC99 */
 103
 104 #  if !defined __NO_MATH_INLINES && !__GNUC_PREREQ (3, 2)
 105
 106 __MATH_INLINE double
 107 __NTH (sqrt (double __x))
 108 {
 109   register double __r;
 110   __asm__ ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
 111   return __r;
 112 }
 113
 114 __MATH_INLINE float
 115 __NTH (sqrtf (float __x))
 116 {
 117   register float __r;
 118   __asm__ ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
 119   return __r;
 120 }
 121
 122 __MATH_INLINE long double
 123 __NTH (sqrtl (long double __x))
 124 {
 125   long double __r;
 126   extern void _Qp_sqrt (long double *, __const__ long double *);
 127   _Qp_sqrt (&__r, &__x);
 128   return __r;
 129 }
 130 #   elif !defined __NO_LONG_DOUBLE_MATH
 131 __MATH_INLINE long double
 132 sqrtl (long double __x) __THROW
 133 {
 134   extern long double _Q_sqrt (__const__ long double);
 135   return _Q_sqrt (__x);
 136 }
 137
 138 #  endif /* !__NO_MATH_INLINES && !GCC 3.2+ */
 139
 140 /* This code is used internally in the GNU libc.  */
 141 #  ifdef __LIBC_INTERNAL_MATH_INLINES
 142 __MATH_INLINE double
 143 __ieee754_sqrt (double __x)
 144 {
 145   register double __r;
 146   __asm__ ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
 147   return __r;
 148 }
 149
 150 __MATH_INLINE float
 151 __ieee754_sqrtf (float __x)
 152 {
 153   register float __r;
 154   __asm__ ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
 155   return __r;
 156 }
 157
 158 __MATH_INLINE long double
 159 __ieee754_sqrtl (long double __x)
 160 {
 161   long double __r;
 162   extern void _Qp_sqrt (long double *, __const__ long double *);
 163   _Qp_sqrt(&__r, &__x);
 164   return __r;
 165 }
 166 #   elif !defined __NO_LONG_DOUBLE_MATH
 167 __MATH_INLINE long double
 168 __ieee754_sqrtl (long double __x)
 169 {
 170   extern long double _Q_sqrt (__const__ long double);
 171   return _Q_sqrt (__x);
 172 }
 173 #  endif /* __LIBC_INTERNAL_MATH_INLINES */
 174 # endif /* gcc 2.8+ */
 175
 176 # ifdef __USE_ISOC99
 177
 178 #  ifndef __NO_MATH_INLINES
 179
 180 __MATH_INLINE double __NTH (fdim (double __x, double __y));
 181 __MATH_INLINE double
 182 __NTH (fdim (double __x, double __y))
 183 {
 184   return __x <= __y ? 0 : __x - __y;
 185 }
 186
 187 __MATH_INLINE float __NTH (fdimf (float __x, float __y));
 188 __MATH_INLINE float
 189 __NTH (fdimf (float __x, float __y))
 190 {
 191   return __x <= __y ? 0 : __x - __y;
 192 }
 193
 194 #  endif /* !__NO_MATH_INLINES */
 195 # endif /* __USE_ISOC99 */
 196 #endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */
 197 #endif /* __GNUC__ */