sysdeps/alpha/copysign.c

   1 /* Copyright (C) 1992, 1993, 1995 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #define __NO_MATH_INLINES
  20
  21 #include <math.h>
  22
  23 /* Return X with its sign changed to Y's.  */
  24 __inline double
  25 __copysign (double __x, double __y)
  26 {
  27   __asm ("cpys %1, %2, %0" : "=f" (__x) : "f" (__y), "f" (__x));
  28   return __x;
  29 }
  30
  31 weak_alias (__copysign, copysign)