mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-03 02:11:08 +00:00
f7d78e18aa
* sysdeps/powerpc/powerpc32/fpu/s_ceilf.S (TWO23.0): Delete. * sysdeps/powerpc/powerpc32/fpu/s_floor.S (TWO52.0): Delete. * sysdeps/powerpc/powerpc32/fpu/s_floorf.S (TWO23.0): Delete. * sysdeps/powerpc/powerpc32/fpu/s_lround.S: Comment typo. (NEGZERO.0, POINTFIVE.0): Delete. * sysdeps/powerpc/powerpc32/fpu/s_rint.S (TWO52.0): Delete. * sysdeps/powerpc/powerpc32/fpu/s_rintf.S (TWO23.0): Delete. * sysdeps/powerpc/powerpc32/fpu/s_round.S (__round): Code in .text. (TWO52.0, POINTFIVE.0): Delete. * sysdeps/powerpc/powerpc32/fpu/s_roundf.S (__roundf): Code in .text. (TWO23.0, POINTFIVE.0): Delete. * sysdeps/powerpc/powerpc32/fpu/s_trunc.S (__trunc): Code in .text. (TWO52.0): Delete. * sysdeps/powerpc/powerpc32/fpu/s_truncf.S (__truncf): Code in .text. (TWO23.0): Delete. * sysdeps/powerpc/powerpc32/memset.S (memset): Formatting.
88 lines
2.5 KiB
ArmAsm
88 lines
2.5 KiB
ArmAsm
/* lround function. PowerPC32 version.
|
|
Copyright (C) 2004 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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <sysdep.h>
|
|
|
|
.section .rodata.cst8,"aM",@progbits,8
|
|
.align 3
|
|
.LC0: /* 0.0 */
|
|
.long 0x00000000
|
|
.long 0
|
|
.LC1: /* 0.5 */
|
|
.long 0x3fe00000
|
|
.long 0
|
|
|
|
.section ".text"
|
|
|
|
/* long [r3] lround (float x [fp1])
|
|
IEEE 1003.1 lround function. IEEE specifies "round to the nearest
|
|
integer value, rounding halfway cases away from zero, regardless of
|
|
the current rounding mode." However PowerPC Architecture defines
|
|
"round to Nearest" as "Choose the best approximation. In case of a
|
|
tie, choose the one that is even (least significant bit o).".
|
|
So we can't use the PowerPC "round to Nearest" mode. Instead we set
|
|
"round toward Zero" mode and round by adding +-0.5 before rounding
|
|
to the integer value. */
|
|
|
|
ENTRY (__lround)
|
|
#ifdef SHARED
|
|
mflr r11
|
|
bl _GLOBAL_OFFSET_TABLE_@local-4
|
|
mflr r10
|
|
lwz r9,.LC0@got(10)
|
|
mtlr r11
|
|
lfd fp12,0(r9)
|
|
#else
|
|
lis r9,.LC0@ha
|
|
lfd fp12,.LC0@l(r9)
|
|
#endif
|
|
#ifdef SHARED
|
|
lwz r9,.LC1@got(10)
|
|
lfd fp10,0(r9)
|
|
#else
|
|
lis r9,.LC1@ha
|
|
lfd fp10,.LC1@l(r9)
|
|
#endif
|
|
fcmpu cr6,fp1,fp12 /* if (x > 0.0) */
|
|
ble- cr6,.L4
|
|
fadd fp1,fp1,fp10 /* x+= 0.5; */
|
|
.L9:
|
|
fctiwz fp2,fp1 /* Convert To Integer DW lround toward 0. */
|
|
stfd fp2,-8(r1)
|
|
nop /* Ensure the following load is in a different dispatch */
|
|
nop /* group to avoid pipe stall on POWER4&5. */
|
|
nop
|
|
lwz r3,-4(r1)
|
|
blr
|
|
.L4:
|
|
fsub fp1,fp1,fp10 /* x-= 0.5; */
|
|
b .L9
|
|
END (__lround)
|
|
|
|
strong_alias (__lround, __lround)
|
|
weak_alias (__lround, lround)
|
|
|
|
strong_alias (__lround, __lroundf)
|
|
weak_alias (__lround, lroundf)
|
|
|
|
#ifdef NO_LONG_DOUBLE
|
|
weak_alias (__lround, lroundl)
|
|
strong_alias (__lround, __lroundl)
|
|
#endif
|