sysdeps/powerpc/bits/mathinline.h

   1 /* Inline math functions for powerpc.
   2    Copyright (C) 1995-2018 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _MATH_H
  20 # error "Never use <bits/mathinline.h> directly; include <math.h> instead."
  21 #endif
  22
  23 #ifndef __extern_inline
  24 # define __MATH_INLINE __inline
  25 #else
  26 # define __MATH_INLINE __extern_inline
  27 #endif  /* __cplusplus */
  28
  29 #if defined __GNUC__ && !defined _SOFT_FLOAT && !defined __NO_FPRS__
  30
  31 #if !defined __NO_MATH_INLINES && defined __OPTIMIZE__
  32
  33 #ifdef __USE_ISOC99
  34
  35 # ifndef __powerpc64__
  36 __MATH_INLINE long int lrint (double __x) __THROW;
  37 __MATH_INLINE long int
  38 __NTH (lrint (double __x))
  39 {
  40   union {
  41     double __d;
  42     long long __ll;
  43   } __u;
  44   __asm__ ("fctiw %0,%1" : "=f"(__u.__d) : "f"(__x));
  45   return __u.__ll;
  46 }
  47
  48 __MATH_INLINE long int lrintf (float __x) __THROW;
  49 __MATH_INLINE long int
  50 __NTH (lrintf (float __x))
  51 {
  52   return lrint ((double) __x);
  53 }
  54 # endif
  55
  56 __MATH_INLINE double fdim (double __x, double __y) __THROW;
  57 __MATH_INLINE double
  58 __NTH (fdim (double __x, double __y))
  59 {
  60   return __x <= __y ? 0 : __x - __y;
  61 }
  62
  63 __MATH_INLINE float fdimf (float __x, float __y) __THROW;
  64 __MATH_INLINE float
  65 __NTH (fdimf (float __x, float __y))
  66 {
  67   return __x <= __y ? 0 : __x - __y;
  68 }
  69
  70 #endif /* __USE_ISOC99 */
  71 #endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */
  72 #endif /* __GNUC__ && !_SOFT_FLOAT && !__NO_FPRS__ */