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/* finite(). PowerPC32/POWER7 version.
Copyright (C) 2010, 2011 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, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <math_ldbl_opt.h>
/* int __finite(x) */
.section .rodata.cst8,"aM",@progbits,8
.align 3
.LC0: /* 1.0 */
.quad 0x3ff0000000000000
.section ".text"
.type __finite, @function
.machine power7
ENTRY (__finite)
#ifdef SHARED
mflr r11
cfi_register(lr,r11)
SETUP_GOT_ACCESS(r9,got_label)
addis r9,r9,.LC0-got_label@ha
lfd fp0,.LC0-got_label@l(r9)
mtlr r11
cfi_same_value (lr)
#else
lis r9,.LC0@ha
lfd fp0,.LC0@l(r9)
#endif
ftdiv cr7,fp1,fp0
li r3,1
bflr 30
/* We have -INF/+INF/NaN or a denormal. */
stwu r1,-16(r1) /* Allocate stack space. */
stfd fp1,8(r1) /* Transfer FP to GPR's. */
ori 2,2,0 /* Force a new dispatch group. */
lhz r0,8(r1) /* Fetch the upper portion of the high word of
the FP value (where the exponent and sign bits
are). */
clrlwi r0,r0,17 /* r0 = abs(r0). */
addi r1,r1,16 /* Reset the stack pointer. */
cmpwi cr7,r0,0x7ff0 /* r4 == 0x7ff0?. */
bltlr cr7 /* LT means we have a denormal. */
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)
#ifdef NO_LONG_DOUBLE
strong_alias (__finite, __finitel)
weak_alias (__finite, finitel)
#endif
#ifdef IS_IN_libm
# if LONG_DOUBLE_COMPAT (libm, GLIBC_2_0)
compat_symbol (libm, finite, finitel, GLIBC_2_0)
# endif
# if LONG_DOUBLE_COMPAT (libm, GLIBC_2_1)
compat_symbol (libm, __finite, __finitel, GLIBC_2_1)
# endif
#else
# 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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