sysdeps/ia64/fpu/s_isnan.S

   1 /* Test for NaN
   2    Copyright (C) 2000-2019 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Jes Sorensen <jes@linuxcare.com>, October 2000.
   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    <https://www.gnu.org/licenses/>.  */
  19
  20 /*
  21  * isnan(x) returns 1 is x is nan, else 0;
  22  */
  23
  24 #include <sysdep.h>
  25 #undef ret
  26
  27 ENTRY (__isnan)
  28 {
  29 .mfi
  30         fclass.m p6, p7 = farg0, @nat | @qnan | @snan
  31         ;;
  32 }
  33 {
  34 .mib
  35 (p6)    mov ret0 = 1
  36 (p7)    mov ret0 = 0
  37         br.ret.sptk.many rp
  38 }
  39 END (__isnan)
  40
  41 strong_alias (__isnan, __isnanf)
  42 strong_alias (__isnan, __isnanl)
  43
  44 weak_alias (__isnan, isnan)
  45 weak_alias (__isnanf, isnanf)
  46 weak_alias (__isnanl, isnanl)
  47
  48 hidden_def (__isnan)
  49 hidden_def (__isnanf)
  50 hidden_def (__isnanl)