public override bool Equals(double?x, double?y)
{
return
(x == null && y == null ? true
: x == null || y == null ? false
: BitwiseDoubleEqualityComparer.Equals(x.Value, y.Value));
}
// The hash code for null is just a constant which is at least *unlikely* to be used
// elsewhere. (Compared with 0, say.)
public override int GetHashCode(double?obj)
{
return(obj == null ? 293864 : BitwiseDoubleEqualityComparer.GetHashCode(obj.Value));
}
