| /* Copy a sign bit between floating-point values. |
| IBM extended format long double version. |
| Copyright (C) 2006-2018 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> |
| |
| ENTRY(__copysignl) |
| /* long double [f1,f2] copysign (long double [f1,f2] x, long double [f3,f4] y); |
| copysign(x,y) returns a value with the magnitude of x and |
| with the sign bit of y. */ |
| #ifdef _ARCH_PPCGR |
| /* fsel available. */ |
| stwu r1,-16(r1) |
| cfi_adjust_cfa_offset (16) |
| stfd fp3,8(r1) |
| fmr fp0,fp1 |
| fabs fp1,fp1 |
| lwz r3,8+HIWORD(r1) |
| cmpwi cr6,r3,0 |
| addi r1,r1,16 |
| cfi_adjust_cfa_offset (-16) |
| fneg fp3,fp2 |
| fsel fp2,fp0,fp2,fp3 |
| bgelr cr6 |
| fneg fp1,fp1 |
| fneg fp2,fp2 |
| blr |
| #else |
| stwu r1,-32(r1) |
| cfi_adjust_cfa_offset (32) |
| stfd fp3,8(r1) |
| stfd fp1,16(r1) |
| lwz r3,8+HIWORD(r1) |
| lwz r4,16+HIWORD(r1) |
| xor r3,r3,r4 |
| cmpwi cr6,r3,0 |
| addi r1,r1,32 |
| cfi_adjust_cfa_offset (-32) |
| bgelr cr6 |
| fneg fp1,fp1 |
| fneg fp2,fp2 |
| blr |
| #endif |
| END (__copysignl) |
| |
| #if IS_IN (libm) |
| long_double_symbol (libm, __copysignl, copysignl) |
| #else |
| long_double_symbol (libc, __copysignl, copysignl) |
| #endif |
