| /* isnan(). PowerPC32 version. |
| Copyright (C) 2008-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <sysdep.h> |
| #include <math_ldbl_opt.h> |
| |
| /* int __isnanf(x) */ |
| .machine power5 |
| EALIGN (__isnanf, 4, 0) |
| stwu r1,-32(r1) |
| cfi_adjust_cfa_offset (32) |
| stfs fp1,28(r1) /* copy FPR to GPR */ |
| nop |
| nop |
| lwz r4,28(r1) |
| lis r0,0x7f80 /* const long r0 0x7f800000 */ |
| clrlwi r4,r4,1 /* x = fabs(x) */ |
| cmpw cr7,r4,r0 /* if (fabs(x) =< inf) */ |
| li r3,0 /* then return 0 */ |
| addi r1,r1,32 |
| cfi_adjust_cfa_offset (-32) |
| blelr+ cr7 |
| L(NaN): |
| li r3,1 /* else return 1 */ |
| blr |
| END (__isnanf) |
| |
| hidden_def (__isnanf) |
| weak_alias (__isnanf, isnanf) |
| |