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[Bug libfortran/48047] Incorrect output rounding of double precision numbers
- From: "burnus at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 9 Mar 2011 19:06:31 +0000
- Subject: [Bug libfortran/48047] Incorrect output rounding of double precision numbers
- Auto-submitted: auto-generated
- References: <bug-48047-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48047
Tobias Burnus <burnus at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |burnus at gcc dot gnu.org
--- Comment #2 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-03-09 19:06:12 UTC ---
For what it is worth: On x86-64-linux (openSUSE Factory, GLIBC 2.11.3), I get:
Got: 0.142857142857142849212692681248881854120
Expected: 0.142857142857142849212692681248881854116
Got: 0.142857142857142849212692681248881854120
Expected: 0.142857142857142849212692681248881854117
Using ifort 11.1 on the same machine:
Got: 0.142857142857142849212692681248881854100
Expected: 0.142857142857142849212692681248881854116
Got: 0.142857142857142849212692681248881854200
Expected: 0.142857142857142849212692681248881854117
Using crayftn 7.2.4, I get on another x86-64-linux (SLES 10/Cray):
Got: 0.142857142857142849000000000000000000000
Expected: 0.142857142857142849212692681248881854116
Got: +.142857142857142849000000000000000000000
Expected: 0.142857142857142849212692681248881854117
My impression is that all twelve numbers are numerically identical and lead to
the same binary representation. Hence, I believe the three compilers print the
correct result.