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Fix llrint, llround missing exceptions for ARM (bug 15470).

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Similar to the recent fix for MIPS, ARM is also missing correct
exceptions on overflow from llrint and llround functions because casts
from floating-point types to long long do not result in correct
exceptions on overflow.  This patch enables the fix for this for ARM.

Tested for ARM.

	[BZ #15470]
	* sysdeps/arm/fix-fp-int-convert-overflow.h: New file.
This commit is contained in:
Joseph Myers 2015-10-09 22:23:39 +00:00
parent 06d97e5e61
commit f1226a2ae3
3 changed files with 45 additions and 10 deletions
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3
ChangeLog
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@ -1,5 +1,8 @@
2015-10-09 Joseph Myers <joseph@codesourcery.com>
[BZ #15470]
* sysdeps/arm/fix-fp-int-convert-overflow.h: New file.
[BZ #16399]
* sysdeps/generic/fix-fp-int-convert-overflow.h: New file.
* sysdeps/ieee754/dbl-64/s_llrint.c: Include <fenv.h>, <limits.h>

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NEWS
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@ -10,16 +10,16 @@ Version 2.23
* The following bugs are resolved with this release:
887, 2542, 2543, 2558, 2898, 4404, 6803, 10432, 14341, 14912, 15367,
15384, 15786, 15918, 16141, 16296, 16347, 16399, 16415, 16517, 16519,
16520, 16521, 16620, 16734, 16973, 16985, 17118, 17243, 17244, 17250,
17441, 17787, 17886, 17887, 17905, 18084, 18086, 18240, 18265, 18370,
18421, 18480, 18525, 18595, 18589, 18610, 18618, 18647, 18661, 18674,
18675, 18681, 18724, 18757, 18778, 18781, 18787, 18789, 18790, 18795,
18796, 18803, 18820, 18823, 18824, 18825, 18857, 18863, 18870, 18872,
18873, 18875, 18887, 18921, 18951, 18952, 18956, 18961, 18966, 18967,
18969, 18970, 18977, 18980, 18981, 18985, 19003, 19012, 19016, 19018,
19032, 19046, 19049, 19050, 19059, 19071, 19076, 19077, 19078, 19079,
19085, 19086, 19088, 19094, 19095.
15384, 15470, 15786, 15918, 16141, 16296, 16347, 16399, 16415, 16517,
16519, 16520, 16521, 16620, 16734, 16973, 16985, 17118, 17243, 17244,
17250, 17441, 17787, 17886, 17887, 17905, 18084, 18086, 18240, 18265,
18370, 18421, 18480, 18525, 18595, 18589, 18610, 18618, 18647, 18661,
18674, 18675, 18681, 18724, 18757, 18778, 18781, 18787, 18789, 18790,
18795, 18796, 18803, 18820, 18823, 18824, 18825, 18857, 18863, 18870,
18872, 18873, 18875, 18887, 18921, 18951, 18952, 18956, 18961, 18966,
18967, 18969, 18970, 18977, 18980, 18981, 18985, 19003, 19012, 19016,
19018, 19032, 19046, 19049, 19050, 19059, 19071, 19076, 19077, 19078,
19079, 19085, 19086, 19088, 19094, 19095.
* The obsolete header <regexp.h> has been removed. Programs that require
this header must be updated to use <regex.h> instead.

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sysdeps/arm/fix-fp-int-convert-overflow.h Normal file
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/* Fix for conversion of floating point to integer overflow. ARM version.
Copyright (C) 2015 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/>. */
#ifndef FIX_FP_INT_CONVERT_OVERFLOW_H
#define FIX_FP_INT_CONVERT_OVERFLOW_H 1
/* As of GCC 5, the generic libgcc2.c conversions from floating point
to long long may not raise the correct exceptions on overflow (and
may raise spurious "inexact" exceptions even in non-overflow cases,
see <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59412>). */
#define FIX_FLT_LLONG_CONVERT_OVERFLOW 1
#define FIX_DBL_LLONG_CONVERT_OVERFLOW 1
#define FIX_FLT_LONG_CONVERT_OVERFLOW 0
#define FIX_DBL_LONG_CONVERT_OVERFLOW 0
#endif /* fix-fp-int-convert-overflow.h */