sysdeps/sparc/sparc64/fpu/multiarch/s_signbit.c

   1 /* signbit ifunc resolver, Linux/sparc64 version.
   2    Copyright (C) 2017-2018 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 #define __signbit __redirect_signbit
  20 #include <math.h>
  21 #undef __signbit
  22
  23 #include <sparc-ifunc.h>
  24
  25 extern __typeof (__redirect_signbit) __signbit_vis3 attribute_hidden;
  26 extern __typeof (__redirect_signbit) __signbit_generic attribute_hidden;
  27
  28 sparc_libm_ifunc_redirected (__redirect_signbit, __signbit,
  29                              hwcap & HWCAP_SPARC_VIS3
  30                              ? __signbit_vis3
  31                              : __signbit_generic);
  32
  33 /* On 64-bit the double version will also always work for
  34    long-double-precision since in both cases the word with the
  35    sign bit in it is passed always in register %f0.  */
  36 strong_alias (__signbit, __signbitl)
  37 sparc_ifunc_redirected_hidden_def (__redirect_signbit, __signbitl)