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Date: Wed, 27 Feb 2008 10:45:00 -0000
Subject: [Bug c++/35389]  New: error in norm() of STL
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From: "ywei at qualcomm dot com" <gcc-bugzilla@gcc.gnu.org>
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There is something wrong with the norm() in STL to get the norm2 of complex
numbers.

Suppose we have complex<double> x(8,1), the norm of x should be 8*8 + 1*1 = 65,
but norm(x) returns 64, which is incorrect.

If we do complex<float> x(8,1), there is no problem, norm(x) does return 65.

The issue is not limited to version 4.2.1. It is observed in other versions as
well.


-- 
           Summary: error in norm() of STL
           Product: gcc
           Version: 4.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ywei at qualcomm dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35389