1 /* Lightweight function to test for ieee unordered comparison
2 Copyright (C) 2002
3 Free Software Foundation, Inc.
4 Contributed by Ian Dall <ian@beware.dropbear.id.au>
5
6 This file is part of GNU CC.
7
8 GNU CC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
11 any later version.
12
13 GNU CC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GNU CC; see the file COPYING. If not, write to
20 the Free Software Foundation, 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
22
23 # define ISNAN(x) ( \
24 { \
25 union u { float f; unsigned int i; } *t = (union u *)&(x); \
26 ((t->i & 0x7f800000) == 0x7f800000) && \
27 ((t->i & 0x7fffff) != 0); \
28 })
29
30 int __unordsf2 ( float, float);
__unordsf2(float a,float b)31 int __unordsf2 ( float a, float b)
32 {
33 return ISNAN(a) || ISNAN(b);
34 }
35