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3e852ba8 | 1 | /* isnan(). PowerPC64 version. |
d4697bc9 | 2 | Copyright (C) 2008-2014 Free Software Foundation, Inc. |
3e852ba8 UD |
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 | |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
3e852ba8 UD |
18 | |
19 | #include <sysdep.h> | |
20 | #include <math_ldbl_opt.h> | |
21 | ||
22 | /* int __isnan(x) */ | |
23 | .machine power6 | |
9c84384c | 24 | EALIGN (__isnan, 4, 0) |
3e852ba8 UD |
25 | CALL_MCOUNT 0 |
26 | mftgpr r4,fp1 /* copy FPR to GPR */ | |
27 | lis r0,0x7ff0 | |
28 | ori r1,r1,0 | |
29 | clrldi r4,r4,1 /* x = fabs(x) */ | |
30 | sldi r0,r0,32 /* const long r0 0x7ff00000 00000000 */ | |
31 | cmpd cr7,r4,r0 /* if (fabs(x) <= inf) */ | |
32 | li r3,0 /* then return 0 */ | |
33 | blelr+ cr7 | |
34 | li r3,1 /* else return 1 */ | |
35 | blr | |
36 | END (__isnan) | |
37 | ||
38 | hidden_def (__isnan) | |
39 | weak_alias (__isnan, isnan) | |
40 | ||
41 | /* It turns out that the 'double' version will also always work for | |
42 | single-precision. */ | |
43 | strong_alias (__isnan, __isnanf) | |
44 | hidden_def (__isnanf) | |
45 | weak_alias (__isnanf, isnanf) | |
46 | ||
47 | #ifdef NO_LONG_DOUBLE | |
48 | strong_alias (__isnan, __isnanl) | |
49 | weak_alias (__isnan, isnanl) | |
50 | #endif | |
51 | ||
52 | #ifndef IS_IN_libm | |
53 | # if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0) | |
54 | compat_symbol (libc, __isnan, __isnanl, GLIBC_2_0); | |
55 | compat_symbol (libc, isnan, isnanl, GLIBC_2_0); | |
56 | # endif | |
57 | #endif | |
58 |