sysdeps/sparc/fpu/bits/mathinline.h

   1 /* Inline math functions for SPARC.
   2    Copyright (C) 1999-2017 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 __NO_MATH_INLINES || defined __LIBC_INTERNAL_MATH_INLINES) && defined __OPTIMIZE__
  29
  30 # ifndef __extern_inline
  31 #  define __MATH_INLINE __inline
  32 # else
  33 #  define __MATH_INLINE __extern_inline
  34 # endif  /* __cplusplus */
  35
  36 /* The gcc, version 2.7 or below, has problems with all this inlining
  37    code.  So disable it for this version of the compiler.  */
  38 # if __GNUC_PREREQ (2, 8)
  39
  40 #  ifdef __USE_ISOC99
  41
  42 /* Test for negative number.  Used in the signbit() macro.  */
  43 __MATH_INLINE int
  44 __NTH (__signbitf (float __x))
  45 {
  46   __extension__ union { float __f; int __i; } __u = { __f: __x };
  47   return __u.__i < 0;
  48 }
  49
  50 #   if __WORDSIZE == 32
  51
  52 __MATH_INLINE int
  53 __NTH (__signbit (double __x))
  54 {
  55   __extension__ union { double __d; int __i[2]; } __u = { __d: __x };
  56   return __u.__i[0] < 0;
  57 }
  58
  59 #    ifndef __NO_LONG_DOUBLE_MATH
  60 __MATH_INLINE int
  61 __NTH (__signbitl (long double __x))
  62 {
  63   __extension__ union { long double __l; int __i[4]; } __u = { __l: __x };
  64   return __u.__i[0] < 0;
  65 }
  66 #    else
  67 __MATH_INLINE int
  68 __NTH (__signbitl (long double __x))
  69 {
  70   return __signbit ((double)__x);
  71 }
  72 #    endif
  73
  74 #   else /* sparc64 */
  75
  76 __MATH_INLINE int
  77 __NTH (__signbit (double __x))
  78 {
  79   __extension__ union { double __d; long int __i; } __u = { __d: __x };
  80   return __u.__i < 0;
  81 }
  82
  83 __MATH_INLINE int
  84 __NTH (__signbitl (long double __x))
  85 {
  86   __extension__ union { long double __l; long int __i[2]; } __u = { __l: __x };
  87   return __u.__i[0] < 0;
  88 }
  89
  90 #   endif /* sparc64 */
  91
  92 #  endif /* __USE_ISOC99 */
  93
  94 #  if !defined __NO_MATH_INLINES && !__GNUC_PREREQ (3, 2)
  95
  96 __MATH_INLINE double
  97 __NTH (sqrt (double __x))
  98 {
  99   register double __r;
 100   __asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
 101   return __r;
 102 }
 103
 104 __MATH_INLINE float
 105 __NTH (sqrtf (float __x))
 106 {
 107   register float __r;
 108   __asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
 109   return __r;
 110 }
 111
 112 #   if __WORDSIZE == 64
 113 __MATH_INLINE long double
 114 __NTH (sqrtl (long double __x))
 115 {
 116   long double __r;
 117   extern void _Qp_sqrt (long double *, const long double *);
 118   _Qp_sqrt (&__r, &__x);
 119   return __r;
 120 }
 121 #   elif !defined __NO_LONG_DOUBLE_MATH
 122 __MATH_INLINE long double
 123 sqrtl (long double __x) __THROW
 124 {
 125   extern long double _Q_sqrt (const long double);
 126   return _Q_sqrt (__x);
 127 }
 128 #   endif /* sparc64 */
 129
 130 #  endif /* !__NO_MATH_INLINES && !GCC 3.2+ */
 131
 132 /* This code is used internally in the GNU libc.  */
 133 #  ifdef __LIBC_INTERNAL_MATH_INLINES
 134 __MATH_INLINE double
 135 __ieee754_sqrt (double __x)
 136 {
 137   register double __r;
 138   __asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
 139   return __r;
 140 }
 141
 142 __MATH_INLINE float
 143 __ieee754_sqrtf (float __x)
 144 {
 145   register float __r;
 146   __asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
 147   return __r;
 148 }
 149
 150 #   if __WORDSIZE == 64
 151 __MATH_INLINE long double
 152 __ieee754_sqrtl (long double __x)
 153 {
 154   long double __r;
 155   extern void _Qp_sqrt (long double *, const long double *);
 156   _Qp_sqrt(&__r, &__x);
 157   return __r;
 158 }
 159 #   elif !defined __NO_LONG_DOUBLE_MATH
 160 __MATH_INLINE long double
 161 __ieee754_sqrtl (long double __x)
 162 {
 163   extern long double _Q_sqrt (const long double);
 164   return _Q_sqrt (__x);
 165 }
 166 #   endif /* sparc64 */
 167 #  endif /* __LIBC_INTERNAL_MATH_INLINES */
 168 # endif /* gcc 2.8+ */
 169
 170 # ifdef __USE_ISOC99
 171
 172 #  ifndef __NO_MATH_INLINES
 173
 174 __MATH_INLINE double __NTH (fdim (double __x, double __y));
 175 __MATH_INLINE double
 176 __NTH (fdim (double __x, double __y))
 177 {
 178   return __x <= __y ? 0 : __x - __y;
 179 }
 180
 181 __MATH_INLINE float __NTH (fdimf (float __x, float __y));
 182 __MATH_INLINE float
 183 __NTH (fdimf (float __x, float __y))
 184 {
 185   return __x <= __y ? 0 : __x - __y;
 186 }
 187
 188 #  endif /* !__NO_MATH_INLINES */
 189 # endif /* __USE_ISOC99 */
 190 #endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */
 191 #endif /* __GNUC__ */