[Bug fortran/16303] Complex logarithm function sometimes chooses a non-principal branch

[giovannibajo at libero dot it]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[gfortran] Complex logarithm|Complex logarithm function
                   |function sometimes chooses a|sometimes chooses a non-
                   |non-principal branch        |principal branch


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16303