projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 3b32d8a2 | 1 | /* isnan(). PowerPC32 version. |
| d4697bc9 | 2 | Copyright (C) 2008-2014 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 __isnanf(x) */ | |
| 23 | .machine power5 | |
| 24 | EALIGN (__isnanf, 4, 0) | |
| 25 | stwu r1,-32(r1) | |
| 26 | cfi_adjust_cfa_offset (32) | |
| 27 | stfs fp1,28(r1) /* copy FPR to GPR */ | |
| 28 | nop | |
| 29 | nop | |
| 30 | lwz r4,28(r1) | |
| 31 | lis r0,0x7f80 /* const long r0 0x7f800000 */ | |
| 32 | clrlwi r4,r4,1 /* x = fabs(x) */ | |
| 33 | cmpw cr7,r4,r0 /* if (fabs(x) =< inf) */ | |
| 34 | li r3,0 /* then return 0 */ | |
| 35 | addi r1,r1,32 | |
| 36 | cfi_adjust_cfa_offset (-32) | |
| 37 | blelr+ cr7 | |
| 38 | L(NaN): | |
| 39 | li r3,1 /* else return 1 */ | |
| 40 | blr | |
| 41 | END (__isnanf) | |
| 42 | ||
| 43 | hidden_def (__isnanf) | |
| 44 | weak_alias (__isnanf, isnanf) | |
| 45 |