sysdeps/alpha/__math.h

   1 /* Inline math functions for Alpha.
   2    Copyright (C) 1996, 1997 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by David Mosberger-Tang.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Library General Public License as
   8    published by the Free Software Foundation; either version 2 of the
   9    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    Library General Public License for more details.
  15
  16    You should have received a copy of the GNU Library General Public
  17    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  18    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #if defined (__GNUC__) && !defined (__NO_MATH_INLINES)
  22
  23 extern __inline double
  24 __copysign (double __x, double __y)
  25 {
  26   __asm ("cpys %1, %2, %0" : "=f" (__x) : "f" (__y), "f" (__x));
  27   return __x;
  28 }
  29
  30 extern __inline double
  31 fabs (double __x)
  32 {
  33   __asm ("cpys $f31, %1, %0" : "=f" (__x) : "f" (__x));
  34   return __x;
  35 }
  36
  37 extern __inline double
  38 atan (double __x)
  39 {
  40   extern double __atan2 (double, double);
  41   return __atan2 (__x, 1.0);
  42 }
  43
  44 #endif