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re PR libstdc++/54036 (Negating a DFP NAN in C++ produces NAN not -NAN) 

2012-08-06  Peter Bergner  <bergner@vnet.ibm.com>

	PR libstdc++/54036
	* include/decimal/decimal.h (_DEFINE_DECIMAL_UNARY_OP): Use _Op as
	a unary operator.
	* testsuite/decimal/pr54036-1.cc: New test.
	* testsuite/decimal/pr54036-2.cc: Likewise.
	* testsuite/decimal/pr54036-3.cc: Likewise.

From-SVN: r190185
This commit is contained in:
Peter Bergner 2012-08-06 13:00:00 -05:00 committed by Paolo Carlini
parent 5b42371aed
commit ad542734e1
5 changed files with 220 additions and 1 deletions
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9
libstdc++-v3/ChangeLog
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@ -1,3 +1,12 @@
2012-08-06 Peter Bergner <bergner@vnet.ibm.com>
PR libstdc++/54036
* include/decimal/decimal.h (_DEFINE_DECIMAL_UNARY_OP): Use _Op as
a unary operator.
* testsuite/decimal/pr54036-1.cc: New test.
* testsuite/decimal/pr54036-2.cc: Likewise.
* testsuite/decimal/pr54036-3.cc: Likewise.
2012-08-02 Michael Hope <michael.hope@linaro.org>
Backport from mainline r186389:

2
libstdc++-v3/include/decimal/decimal.h
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@ -288,7 +288,7 @@ namespace decimal
inline _Tp operator _Op(_Tp __rhs) \
{ \
_Tp __tmp; \
__tmp.__setval(0 _Op __rhs.__getval()); \
__tmp.__setval(_Op __rhs.__getval()); \
return __tmp; \
}

70
libstdc++-v3/testsuite/decimal/pr54036-1.cc Normal file
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@ -0,0 +1,70 @@
// Copyright (C) 2012 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This 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 General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-require-effective-target dfp }
#include <decimal/decimal>
#include <testsuite_hooks.h>
using namespace std::decimal;
decimal32
__attribute__ ((noinline))
my_nan32 (void)
{
decimal32 z = 0;
decimal32 v = z/z;
return v;
}
decimal32
__attribute__ ((noinline))
my_inf32 (void)
{
decimal32 o = 1;
decimal32 z = 0;
decimal32 v = o/z;
return v;
}
int
main ()
{
decimal32 v;
v = my_nan32 ();
VERIFY (__builtin_isnand32 (v.__getval ()));
VERIFY (!__builtin_signbitd32 (v.__getval ()));
v = -v;
VERIFY (__builtin_isnand32 (v.__getval ()));
VERIFY (__builtin_signbitd32 (v.__getval ()));
v = my_inf32 ();
VERIFY (__builtin_isinfd32 (v.__getval ()));
VERIFY (!__builtin_signbitd32 (v.__getval ()));
v = -v;
VERIFY (__builtin_isinfd32 (v.__getval ()));
VERIFY (__builtin_signbitd32 (v.__getval ()));
return 0;
}

70
libstdc++-v3/testsuite/decimal/pr54036-2.cc Normal file
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@ -0,0 +1,70 @@
// Copyright (C) 2012 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This 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 General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-require-effective-target dfp }
#include <decimal/decimal>
#include <testsuite_hooks.h>
using namespace std::decimal;
decimal64
__attribute__ ((noinline))
my_nan64 (void)
{
decimal64 z = 0;
decimal64 v = z/z;
return v;
}
decimal64
__attribute__ ((noinline))
my_inf64 (void)
{
decimal64 o = 1;
decimal64 z = 0;
decimal64 v = o/z;
return v;
}
int
main ()
{
decimal64 v;
v = my_nan64 ();
VERIFY (__builtin_isnand64 (v.__getval ()));
VERIFY (!__builtin_signbitd64 (v.__getval ()));
v = -v;
VERIFY (__builtin_isnand64 (v.__getval ()));
VERIFY (__builtin_signbitd64 (v.__getval ()));
v = my_inf64 ();
VERIFY (__builtin_isinfd64 (v.__getval ()));
VERIFY (!__builtin_signbitd64 (v.__getval ()));
v = -v;
VERIFY (__builtin_isinfd64 (v.__getval ()));
VERIFY (__builtin_signbitd64 (v.__getval ()));
return 0;
}

70
libstdc++-v3/testsuite/decimal/pr54036-3.cc Normal file
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@ -0,0 +1,70 @@
// Copyright (C) 2012 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This 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 General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-require-effective-target dfp }
#include <decimal/decimal>
#include <testsuite_hooks.h>
using namespace std::decimal;
decimal128
__attribute__ ((noinline))
my_nan128 (void)
{
decimal128 z = 0;
decimal128 v = z/z;
return v;
}
decimal128
__attribute__ ((noinline))
my_inf128 (void)
{
decimal128 o = 1;
decimal128 z = 0;
decimal128 v = o/z;
return v;
}
int
main ()
{
decimal128 v;
v = my_nan128 ();
VERIFY (__builtin_isnand128 (v.__getval ()));
VERIFY (!__builtin_signbitd128 (v.__getval ()));
v = -v;
VERIFY (__builtin_isnand128 (v.__getval ()));
VERIFY (__builtin_signbitd128 (v.__getval ()));
v = my_inf128 ();
VERIFY (__builtin_isinfd128 (v.__getval ()));
VERIFY (!__builtin_signbitd128 (v.__getval ()));
v = -v;
VERIFY (__builtin_isinfd128 (v.__getval ()));
VERIFY (__builtin_signbitd128 (v.__getval ()));
return 0;
}