sysdeps/sparc/sparc64/fpu/s_signbit.S

   1 /* signbit().  sparc64 version.
   2    Copyright (C) 2012-2014 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 #include <sysdep.h>
  20
  21 ENTRY (__signbit)
  22         st      %f0, [%sp + STACK_BIAS + 128]
  23         ld      [%sp + STACK_BIAS + 128], %o0
  24         retl
  25          srl    %o0, 31, %o0
  26 END (__signbit)
  27 weak_alias (__signbit, signbit)
  28
  29 /* On 64-bit the double version will also always work for
  30    long-double-precision since in both cases the word with the
  31    sign bit in it is passed always in register %f0.  */
  32 strong_alias (__signbit, __signbitl)
  33 hidden_def (__signbitl)
  34 weak_alias (__signbitl, signbitl)