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/* Copy a sign bit between floating-point values.
IBM extended format long double version.
Copyright (C) 2006-2020 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
<https://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
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