DO NOT REPLY [Bug 24962] - [math] MathUtils.sign(NaN) returns -1 instead of NaN

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=24962

[math] MathUtils.sign(NaN) returns -1 instead of NaN





------- Additional Comments From [EMAIL PROTECTED]  2003-11-25 14:21 -------
I'll only add that the only place MathUtils.sign is used is once in Complex. It
should be easy to test its behavior in this class. It may be fairly easy to
manage testing 

    /**
     * 
     */
    public static Complex sqrt(Complex z) {
        if (z.isNaN()) {
            return Complex.NaN;
        }
        
        double a = z.getReal();
        double b = z.getImaginary();
        
        double t = Math.sqrt((Math.abs(a) + z.abs()) / 2.0);
        if (a >= 0.0) {
            return new Complex(t, b / (2.0 * t));
        } else {
            return new Complex(Math.abs(z.getImaginary()) / (2.0 * t),
                MathUtils.sign(b) * t);
        }
    }

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