mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-01 17:30:07 +00:00
04277e02d7
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/* Manipulation of the bit representation of 'long double' quantities.
|
|
Copyright (C) 2006-2019 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/>. */
|
|
|
|
#ifndef _MATH_LDBL_H_PPC_
|
|
#define _MATH_LDBL_H_PPC_ 1
|
|
|
|
/* GCC does not optimize the default ldbl_pack code to not spill register
|
|
in the stack. The following optimization tells gcc that pack/unpack
|
|
is really a nop. We use fr1/fr2 because those are the regs used to
|
|
pass/return a single long double arg. */
|
|
static inline long double
|
|
ldbl_pack_ppc (double a, double aa)
|
|
{
|
|
register long double x __asm__ ("fr1");
|
|
register double xh __asm__ ("fr1");
|
|
register double xl __asm__ ("fr2");
|
|
xh = a;
|
|
xl = aa;
|
|
__asm__ ("" : "=f" (x) : "f" (xh), "f" (xl));
|
|
return x;
|
|
}
|
|
|
|
static inline void
|
|
ldbl_unpack_ppc (long double l, double *a, double *aa)
|
|
{
|
|
register long double x __asm__ ("fr1");
|
|
register double xh __asm__ ("fr1");
|
|
register double xl __asm__ ("fr2");
|
|
x = l;
|
|
__asm__ ("" : "=f" (xh), "=f" (xl) : "f" (x));
|
|
*a = xh;
|
|
*aa = xl;
|
|
}
|
|
|
|
#define ldbl_pack ldbl_pack_ppc
|
|
#define ldbl_unpack ldbl_unpack_ppc
|
|
|
|
#include <sysdeps/ieee754/ldbl-128ibm/math_ldbl.h>
|
|
|
|
#endif /* math_ldbl.h */
|