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/* finite(). PowerPC64/POWER7 version.
Copyright (C) 2010 Free Software Foundation, Inc.
Contributed by Luis Machado <luisgpm@br.ibm.com>.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sysdep.h>
#include <math_ldbl_opt.h>
/* int __finite(x) */
.section ".toc","aw"
.LC0: /* 1.0 */
.tc FD_ONE[TC],0x3ff0000000000000
.section ".text"
.type __finite, @function
.machine power7
EALIGN (__finite, 4, 0)
CALL_MCOUNT 0
lfd fp0,.LC0@toc(r2)
ftdiv cr7,fp1,fp0
li r3,1
bflr 30
/* If we are here, we either have +/-INF,
NaN or denormal. */
stfd fp1,-16(r1) /* Transfer FP to GPR's. */
ori 2,2,0 /* Force a new dispatch group. */
lhz r4,-16(r1) /* Fetch the upper portion of the high word of
the FP value (where the exponent and sign bits
are). */
clrlwi r4,r4,17 /* r4 = abs(r4). */
cmpwi cr7,r4,0x7ff0 /* r4 == 0x7ff0? */
bltlr cr7 /* LT means finite, other non-finite. */
li r3,0
blr
END (__finite)
hidden_def (__finite)
weak_alias (__finite, finite)
/* It turns out that the 'double' version will also always work for
single-precision. */
strong_alias (__finite, __finitef)
hidden_def (__finitef)
weak_alias (__finitef, finitef)
#ifndef IS_IN_libm
# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0)
compat_symbol (libc, __finite, __finitel, GLIBC_2_0);
compat_symbol (libc, finite, finitel, GLIBC_2_0);
# endif
#endif
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