.Equals(...) not working for double.NaN

[MichaelMayrhofer]

Hi,

I'm using version 1.7.1 with Visual Studio Professional 2017 version 15.2.

It seems [Equals] does not handle double.NaN correct. While double.NaN.Equals(double.NaN) returns true [Equals] returns false.

I wrote the sample code above.
value = double.NaN => equalsD: true, equalsC: false
value = 0d => equalsD: true, equalsC: true

namespace Fody.EqualsTest
{
    class Test
    {
        [Equals]
        class DoubleContainer
        {
            public double Value { get; set; }
        }

        public void ShouldBeEqual()
        {
            const double value = double.NaN;
            double d1 = value;
            double d2 = value;
            var equalsD = d1.Equals(d2);
            Debug.Assert(equalsD);

            DoubleContainer c1 = new DoubleContainer { Value = value };
            DoubleContainer c2 = new DoubleContainer { Value = value };
            var equalsC = c1.Equals(c2);
            Debug.Assert(equalsC);
        }
    }
}