mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-02 01:40:07 +00:00
59 lines
1.7 KiB
ArmAsm
59 lines
1.7 KiB
ArmAsm
/* isnan(). PowerPC64 version.
|
|
Copyright (C) 2008-2013 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 __isnan(x) */
|
|
.machine power6
|
|
EALIGN (__isnan, 4, 0)
|
|
CALL_MCOUNT 0
|
|
mftgpr r4,fp1 /* copy FPR to GPR */
|
|
lis r0,0x7ff0
|
|
ori r1,r1,0
|
|
clrldi r4,r4,1 /* x = fabs(x) */
|
|
sldi r0,r0,32 /* const long r0 0x7ff00000 00000000 */
|
|
cmpd cr7,r4,r0 /* if (fabs(x) <= inf) */
|
|
li r3,0 /* then return 0 */
|
|
blelr+ cr7
|
|
li r3,1 /* else return 1 */
|
|
blr
|
|
END (__isnan)
|
|
|
|
hidden_def (__isnan)
|
|
weak_alias (__isnan, isnan)
|
|
|
|
/* It turns out that the 'double' version will also always work for
|
|
single-precision. */
|
|
strong_alias (__isnan, __isnanf)
|
|
hidden_def (__isnanf)
|
|
weak_alias (__isnanf, isnanf)
|
|
|
|
#ifdef NO_LONG_DOUBLE
|
|
strong_alias (__isnan, __isnanl)
|
|
weak_alias (__isnan, isnanl)
|
|
#endif
|
|
|
|
#ifndef IS_IN_libm
|
|
# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0)
|
|
compat_symbol (libc, __isnan, __isnanl, GLIBC_2_0);
|
|
compat_symbol (libc, isnan, isnanl, GLIBC_2_0);
|
|
# endif
|
|
#endif
|
|
|