sysdeps/sparc/sparc64/fpu/s_isnanf.S

   1 /* isnanf().  sparc64 version.
   2    Copyright (C) 2012-2020 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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <sysdep.h>
  20
  21 ENTRY (__isnanf)
  22         st      %f1, [%sp + STACK_BIAS + 128]
  23         sethi   %hi(0x7f800000), %g1
  24         lduw    [%sp + STACK_BIAS + 128], %o0
  25         sll     %o0, 1, %o0
  26         srl     %o0, 1, %o0
  27         sub     %g1, %o0, %o0
  28         retl
  29          srl    %o0, 31, %o0
  30 END (__isnanf)
  31 hidden_def (__isnanf)
  32 weak_alias (__isnanf, isnanf)