Convert double into hex in C#

user_256357 0
Viewed 21203

I have this value: 

double headingAngle = 135.34375;

I would like to convert it to HEX and print the HEX to the console. I have already converted a string and int into their respective HEX values, but a double seems to be much more tricky. Can someone point me in the right direction?

double hex .net c#
5 Answers
BitConverter.DoubleToInt64Bits(value).ToString("X")
user_3734450

Try this:

public static string Format(double number, double @base)
{
    StringBuilder format = new StringBuilder();
    if(number < 0)
    {
        format.Append('-');
        number = -number;
    }
    double log = Math.Log(number, @base);
    bool frac = false;
    double order;
    if(log < 0)
    {
        frac = true;
        format.Append(digits[0]);
        format.Append('.');
        order = 1/@base;
    }else{
        order = Math.Pow(@base, Math.Floor(log));
    }
    while(number != 0 || order >= 1)
    {
        double digit = Math.Floor(number/order);
        if(digit >= @base) break;
        number = number-digit*order;
        number = Math.Round(number, 15);
        if(order < 1 && !frac)
        {
            format.Append('.');
            frac = true;
        }
        order /= @base;
        if(digit >= 10)
        {
            format.Append((char)('A'+(digit-10)));
        }else{
            format.Append((char)('0'+digit));
        }
    }
    return format.ToString();
}

Use it like Format(headingAngle, 16). You can also comment out number = Math.Round(number, 15); for more interesting results. ☺

Result is in culture-invariant format. For 135.34375, it returns 87.58.

user_14242440
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