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/* isnan(). PowerPC32 version.
Copyright (C) 2008-2016 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)
stwu r1,-32(r1)
cfi_adjust_cfa_offset (32)
ori r1,r1,0
stfd fp1,24(r1) /* copy FPR to GPR */
ori r1,r1,0
lwz r4,24+HIWORD(r1)
lwz r5,24+LOWORD(r1)
lis r0,0x7ff0 /* const long r0 0x7ff00000 00000000 */
clrlwi r4,r4,1 /* x = fabs(x) */
cmpw cr7,r4,r0 /* if (fabs(x) =< inf) */
cmpwi cr6,r5,0
li r3,0 /* then return 0 */
addi r1,r1,32
cfi_adjust_cfa_offset (-32)
bltlr+ cr7
bgt- cr7,L(NaN)
beqlr+ cr6
L(NaN):
li r3,1 /* else return 1 */
blr
END (__isnan)
hidden_def (__isnan)
weak_alias (__isnan, isnan)
#ifdef NO_LONG_DOUBLE
strong_alias (__isnan, __isnanl)
weak_alias (__isnan, isnanl)
#endif
#if !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
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