[Bug libstdc++/54036] Negating a DFP NAN in C++ produces NAN not -NAN

[bergner at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54036

--- Comment #2 from Peter Bergner <bergner at gcc dot gnu.org> 2012-07-25 
17:02:39 UTC ---
Author: bergner
Date: Wed Jul 25 17:02:27 2012
New Revision: 189857

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=189857
Log:
    Backport prospective patch from mainline

libstdc++-v3/
        PR libstdc++/54036
        * include/decimal/decimal.h (_DEFINE_DECIMAL_UNARY_OP): Use _Op as
        a unary operator.

gcc/testsuite/
        PR libstdc++/54036
        * g++.dg/dfp/pr54036-1.C: New test.
        * g++.dg/dfp/pr54036-2.C: Likewise.
        * g++.dg/dfp/pr54036-3.C: Likewise.

Added:
    branches/ibm/gcc-4_6-branch/gcc/testsuite/g++.dg/dfp/pr54036-1.C
    branches/ibm/gcc-4_6-branch/gcc/testsuite/g++.dg/dfp/pr54036-2.C
    branches/ibm/gcc-4_6-branch/gcc/testsuite/g++.dg/dfp/pr54036-3.C
Modified:
    branches/ibm/gcc-4_6-branch/gcc/testsuite/ChangeLog.ibm
    branches/ibm/gcc-4_6-branch/libstdc++-v3/ChangeLog.ibm
    branches/ibm/gcc-4_6-branch/libstdc++-v3/include/decimal/decimal.h