sysdeps/sparc/sparc64/fpu/s_fmax.S

   1 /* fmax function, sparc64 version.
   2    Copyright (C) 2012-2013 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by David S. Miller <davem@davemloft.net>, 2012.
   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 #include <sysdep.h>
  21
  22 #define SIGN_BIT        %f12                    /* -0.0 */
  23
  24 ENTRY (__fmax)
  25         fcmpd   %fcc1, %f2, %f2
  26         fzero   SIGN_BIT
  27         fmovdu  %fcc1, %f0, %f2
  28         fnegd   SIGN_BIT, SIGN_BIT
  29         fcmpd   %fcc2, %f0, %f2
  30         fmovdul %fcc2, %f2, %f0
  31         fand    %f0, %f2, %f4
  32         fandnot2 SIGN_BIT, %f4, %f4
  33         retl
  34          fandnot2 %f0, %f4, %f0
  35 END (__fmax)
  36 weak_alias (__fmax, fmax)