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From: "pcarlini at suse dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/20758] operator-(const T&, const complex<T>&) vs operator-(const complex<T>&, const complex<T>&)
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------- Additional Comments From pcarlini at suse dot de  2005-04-05 14:36 -------
Ok, you are right (forgot that your testcases is for negative real part): then
the imaginary part of the log changes from +Pi to -Pi, since it's equal to arg.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20758