mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-04 19:00:09 +00:00
71 lines
2.0 KiB
ArmAsm
71 lines
2.0 KiB
ArmAsm
/* Round to int floating-point values. PowerPC32 version.
|
|
Copyright (C) 2004-2013 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/>. */
|
|
|
|
/* This has been coded in assembler because GCC makes such a mess of it
|
|
when it's coded in C. */
|
|
|
|
#include <sysdep.h>
|
|
#include <math_ldbl_opt.h>
|
|
|
|
.section .rodata.cst4,"aM",@progbits,4
|
|
.align 2
|
|
.LC0: /* 2**52 */
|
|
.long 0x59800000
|
|
|
|
.section ".text"
|
|
ENTRY (__rint)
|
|
#ifdef SHARED
|
|
mflr r11
|
|
cfi_register(lr,r11)
|
|
SETUP_GOT_ACCESS(r9,got_label)
|
|
addis r9,r9,.LC0-got_label@ha
|
|
lfs fp13,.LC0-got_label@l(r9)
|
|
mtlr r11
|
|
cfi_same_value (lr)
|
|
#else
|
|
lis r9,.LC0@ha
|
|
lfs fp13,.LC0@l(r9)
|
|
#endif
|
|
fabs fp0,fp1
|
|
fsub fp12,fp13,fp13 /* generate 0.0 */
|
|
fcmpu cr7,fp0,fp13 /* if (fabs(x) > TWO52) */
|
|
fcmpu cr6,fp1,fp12 /* if (x > 0.0) */
|
|
bnllr- cr7
|
|
bng- cr6,.L4
|
|
fadd fp1,fp1,fp13 /* x+= TWO52; */
|
|
fsub fp1,fp1,fp13 /* x-= TWO52; */
|
|
fabs fp1,fp1 /* if (x == 0.0) */
|
|
blr /* x = 0.0; */
|
|
.L4:
|
|
bnllr- cr6 /* if (x < 0.0) */
|
|
fsub fp1,fp1,fp13 /* x-= TWO52; */
|
|
fadd fp1,fp1,fp13 /* x+= TWO52; */
|
|
fnabs fp1,fp1 /* if (x == 0.0) */
|
|
blr /* x = -0.0; */
|
|
END (__rint)
|
|
|
|
weak_alias (__rint, rint)
|
|
|
|
#ifdef NO_LONG_DOUBLE
|
|
weak_alias (__rint, rintl)
|
|
strong_alias (__rint, __rintl)
|
|
#endif
|
|
#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)
|
|
compat_symbol (libm, __rint, rintl, GLIBC_2_0)
|
|
#endif
|