[Mono-list] About the comparison of double values

[yoros]

Hi again,

I have a testcase for a bug in the double comparison. When comparing any
double value with NaN it must be false but in a few cases it says true.

Can anyone guide me to find the place where is implemented the double
comparisons ? Thank you.

See you,

    Pedro

-- 
Pedro Martinez Juliá
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using System;

public class EntryPoint {

        public static void Main (string[] args) {

                double a = Double.NaN;
                double b = 1.0;

                if (a == a)
                        Console.WriteLine("NAN == NAN");
                if (a < a)
                        Console.WriteLine("NAN < NAN");
                if (a > a)
                        Console.WriteLine("NAN > NAN");
                if (a <= a)
                        Console.WriteLine("NAN <= NAN");
                if (a >= a)
                        Console.WriteLine("NAN >= NAN");

                if (a == b)
                        Console.WriteLine("NAN == 1.0");
                if (a < b)
                        Console.WriteLine("NAN < 1.0");
                if (a > b)
                        Console.WriteLine("NAN > 1.0");
                if (a <= b)
                        Console.WriteLine("NAN <= 1.0");
                if (a >= b)
                        Console.WriteLine("NAN >= 1.0");

                if (b == a)
                        Console.WriteLine("1.0 == NAN");
                if (b < a)
                        Console.WriteLine("1.0 < NAN");
                if (b > a)
                        Console.WriteLine("1.0 > NAN");
                if (b <= a)
                        Console.WriteLine("1.0 <= NAN");
                if (b >= a)
                        Console.WriteLine("1.0 >= NAN");

        }

}