sysdeps/sparc/sparc32/sparcv9/fpu/s_isnan.S

   1 /* isnan().  sparc32 v9 version.
   2    Copyright (C) 2012-2016 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 #include <math_ldbl_opt.h>
  21
  22 ENTRY (__isnan)
  23         sethi   %hi(0x7ff00000), %g1
  24         sllx    %o0, 33, %o0
  25         sllx    %g1, 32, %g1
  26         srlx    %o0, 1, %o0
  27         or      %o0, %o1, %o0
  28         sub     %g1, %o0, %o0
  29         retl
  30          srlx   %o0, 63, %o0
  31 END (__isnan)
  32 hidden_def (__isnan)
  33 weak_alias (__isnan, isnan)
  34
  35 #if !IS_IN (libm)
  36 # if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0)
  37 compat_symbol (libc, __isnan, __isnanl, GLIBC_2_0);
  38 compat_symbol (libc, isnan, isnanl, GLIBC_2_0);
  39 # endif
  40 #endif