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3b32d8a2 | 1 | /* isnan(). PowerPC32 version. |
b168057a | 2 | Copyright (C) 2008-2015 Free Software Foundation, Inc. |
3b32d8a2 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/>. */ | |
3b32d8a2 UD |
18 | |
19 | #include <sysdep.h> | |
20 | #include <math_ldbl_opt.h> | |
21 | ||
22 | /* int __isnan(x) */ | |
23 | .machine power6 | |
24 | EALIGN (__isnan, 4, 0) | |
25 | stwu r1,-32(r1) | |
26 | cfi_adjust_cfa_offset (32) | |
27 | ori r1,r1,0 | |
28 | stfd fp1,24(r1) /* copy FPR to GPR */ | |
29 | ori r1,r1,0 | |
7b88401f AM |
30 | lwz r4,24+HIWORD(r1) |
31 | lwz r5,24+LOWORD(r1) | |
3b32d8a2 UD |
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) */ | |
35 | cmpwi cr6,r5,0 | |
36 | li r3,0 /* then return 0 */ | |
37 | addi r1,r1,32 | |
38 | cfi_adjust_cfa_offset (-32) | |
39 | bltlr+ cr7 | |
40 | bgt- cr7,L(NaN) | |
41 | beqlr+ cr6 | |
42 | L(NaN): | |
43 | li r3,1 /* else return 1 */ | |
44 | blr | |
45 | END (__isnan) | |
46 | ||
47 | hidden_def (__isnan) | |
48 | weak_alias (__isnan, isnan) | |
49 | ||
50 | #ifdef NO_LONG_DOUBLE | |
51 | strong_alias (__isnan, __isnanl) | |
52 | weak_alias (__isnan, isnanl) | |
53 | #endif | |
54 | ||
a109996e | 55 | #if !IS_IN (libm) |
3b32d8a2 UD |
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); | |
59 | # endif | |
60 | #endif | |
61 |