[Mono-list] About the comparison of double values

[yoros@wanadoo.es]

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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

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Pedro Martinez Juliá
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)|    yoros@wanadoo.es
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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");

	}

}

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