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/* isinf(). PowerPC64/POWER8 version.
Copyright (C) 2014-2018 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>
#define MFVSRD_R3_V1 .long 0x7c230066 /* mfvsrd r3,vs1 */
/* int [r3] __isinf([fp1] x) */
ENTRY_TOCLESS (__isinf, 4)
CALL_MCOUNT 0
MFVSRD_R3_V1
lis r9,0x7ff0 /* r9 = 0x7ff0 */
rldicl r10,r3,0,1 /* r10 = r3 & (0x8000000000000000) */
sldi r9,r9,32 /* r9 = r9 << 52 */
cmpd cr7,r10,r9 /* fp1 & 0x7ff0000000000000 ? */
beq cr7,L(inf)
li r3,0 /* Not inf */
blr
L(inf):
sradi r3,r3,63 /* r3 = r3 >> 63 */
ori r3,r3,1 /* r3 = r3 | 0x1 */
blr
END (__isinf)
hidden_def (__isinf)
weak_alias (__isinf, isinf)
/* It turns out that the 'double' version will also always work for
single-precision. */
strong_alias (__isinf, __isinff)
hidden_def (__isinff)
weak_alias (__isinff, isinff)
#ifdef NO_LONG_DOUBLE
strong_alias (__isinf, __isinfl)
weak_alias (__isinf, isinfl)
#endif
#if !IS_IN (libm)
# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0)
compat_symbol (libc, __isinf, __isinfl, GLIBC_2_0);
compat_symbol (libc, isinf, isinfl, GLIBC_2_0);
# endif
#endif
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