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f964490f RM |
1 | /* Copy a sign bit between floating-point values. |
2 | IBM extended format long double version. | |
2b778ceb | 3 | Copyright (C) 2004-2021 Free Software Foundation, Inc. |
f964490f RM |
4 | This file is part of the GNU C Library. |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 | 17 | License along with the GNU C Library; if not, see |
5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
f964490f RM |
19 | |
20 | #include <sysdep.h> | |
21 | #include <math_ldbl_opt.h> | |
22 | ||
23 | ENTRY(__fabsl) | |
24 | /* long double [f1,f2] fabs (long double [f1,f2] x); | |
25 | fabs(x,y) returns a value with the magnitude of x and | |
26 | with the sign bit of y. */ | |
24e9ae1b JM |
27 | #ifdef _ARCH_PPCGR |
28 | /* fsel available. */ | |
f964490f | 29 | fmr fp0,fp1 |
24e9ae1b JM |
30 | #else |
31 | /* Use integer operations to test sign of high part to avoid | |
32 | exceptions on sNaNs. */ | |
33 | stwu r1,-16(r1) | |
34 | cfi_adjust_cfa_offset (16) | |
35 | stfd fp1,8(r1) | |
36 | #endif | |
f964490f | 37 | fabs fp1,fp1 |
24e9ae1b JM |
38 | #ifdef _ARCH_PPCGR |
39 | fneg fp3,fp2 | |
40 | fsel fp2,fp0,fp2,fp3 | |
41 | #else | |
42 | lwz r3,8+HIWORD(r1) | |
43 | cmpwi cr6,r3,0 | |
44 | addi r1,r1,16 | |
45 | cfi_adjust_cfa_offset (-16) | |
46 | bgelr cr6 | |
f964490f | 47 | fneg fp2,fp2 |
24e9ae1b | 48 | #endif |
f964490f RM |
49 | blr |
50 | END (__fabsl) | |
51 | ||
52 | long_double_symbol (libm, __fabsl, fabsl) |