1 /* isnan(). PowerPC32 version.
2 Copyright (C) 2008-2013 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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/>. */
20 #include <math_ldbl_opt.h>
24 EALIGN (__isnan, 4, 0)
26 cfi_adjust_cfa_offset (32)
28 stfd fp1,24(r1) /* copy FPR to GPR */
32 lis r0,0x7ff0 /* const long r0 0x7ff00000 00000000 */
33 clrlwi r4,r4,1 /* x = fabs(x) */
34 cmpw cr7,r4,r0 /* if (fabs(x) =< inf) */
36 li r3,0 /* then return 0 */
38 cfi_adjust_cfa_offset (-32)
43 li r3,1 /* else return 1 */
48 weak_alias (__isnan, isnan)
51 strong_alias (__isnan, __isnanl)
52 weak_alias (__isnan, isnanl)
56 # if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0)
57 compat_symbol (libc, __isnan, __isnanl, GLIBC_2_0);
58 compat_symbol (libc, isnan, isnanl, GLIBC_2_0);