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Binary formatting an integer

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ddanbe

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Binary formatting an integer

Jul 18th, 2009

Hi all,
I like to write out integers in binary format to the console.
Let's say I want Myint=5 to be written I use Convert.ToString(Myint,2)
I get 101, what I want is 0000000000000101

I found this struct on the net which could do the trick, but is there a better way?

 Help with Code Tags 
 c# Syntax (Toggle Plain Text) 
struct IntBits
    {
        private int _bits;
 
        public IntBits(int InitialBitValue)
        {
            _bits = InitialBitValue;
        }
 
        //declare indexer
        public bool this[int index]
        {
            get
            {
                return (_bits & (1 << index)) != 0;
            }
            set
            {
                if (value)
                    _bits |= (1 << index);  //set bit index 1
                else
                    _bits &= ~(1 << index); //set bit index 0           
            }
        }
    }
struct IntBits
    {
        private int _bits;

        public IntBits(int InitialBitValue)
        {
            _bits = InitialBitValue;
        }

        //declare indexer
        public bool this[int index]
        {
            get
            {
                return (_bits & (1 << index)) != 0;
            }
            set
            {
                if (value)
                    _bits |= (1 << index);  //set bit index 1
                else
                    _bits &= ~(1 << index); //set bit index 0           
            }
        }
    }

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sknake

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Re: Binary formatting an integer

Jul 18th, 2009

You could do it at the string level with .PadLeft() or are you wanting this done property with binary formatting?

 Help with Code Tags 
 c# Syntax (Toggle Plain Text) 
    private void button2_Click(object sender, EventArgs e)
    {
      int myInt = 5;
      string res = Convert.ToString(myInt, 2).PadLeft(16, '0');
      System.Diagnostics.Debugger.Break();
    }
    private void button2_Click(object sender, EventArgs e)
    {
      int myInt = 5;
      string res = Convert.ToString(myInt, 2).PadLeft(16, '0');
      System.Diagnostics.Debugger.Break();
    }

Scott Knake
Custom Software Development
Apex Software, Inc.

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ddanbe

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Re: Binary formatting an integer

Jul 18th, 2009

Thanks Scott, I was not aware of the existence of the PadLeft function

This will do for what I want(thanks again), but what do you mean by

•

or are you wanting this done property with binary formatting?

As you probably know English is not my native language.

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Make love, no war. Cave ab homine unius libri.
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sknake

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Re: Binary formatting an integer

Jul 18th, 2009

I was meaning if there is some way to use an IFormatProvider for binary to get the string padded with zeros. I don't know of a way but I didn't know if you weren't aware of .PadLeft() or if you didn't want to use it, so that is what I was trying to ask

It sounds like you're adding binary support to your calculator? When you're done I can replace my TI-85 with your program I think

Scott Knake
Custom Software Development
Apex Software, Inc.

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ddanbe

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Re: Binary formatting an integer

Jul 18th, 2009

No I was not planning on doing that.
Did you know there are some subtle differences between the MS calculator and the one I have at home? I am glad I finished it as it is

The reason I needed a binary format is I wanted to see what graphical pattern I would get when using prime numbers. So I would make colored squares depending if a bit is 0 or 1.
I first made a test program to get the zeros and ones, thanks to you I can continue!

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Make love, no war. Cave ab homine unius libri.
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sknake

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Re: Binary formatting an integer

Jul 19th, 2009

I was actually reading that thread you posted about the calculators being different earlier today but I didn't understand it and it was so old I didn't want to post on it. What differences have you noticed since then?

Scott Knake
Custom Software Development
Apex Software, Inc.

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ddanbe

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Re: Binary formatting an integer

Jul 19th, 2009

I think you are referring to this post http://www.daniweb.com/forums/thread187538.html
It was while I was testing my C# calculator I came up with this.
I tried out the most wierd keystroke sequences to let it somehow "misbehave". I did not come up with new ones, besides this is a keystroke sequence you normally would not use. Given the fact that I can not try out all the possible keystroke permutations and that my C# calculator works (as far as I know), I left it with that and did not look for new issues.

Today is a gift, that's why it is called "The Present".
Make love, no war. Cave ab homine unius libri.
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ddanbe

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5 Days Ago

Sigh... those C-guys really have a hard time

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Ryshad

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4 Days Ago

@sknake, i noticed one..if you key in 1+2=-= MS calc will return zero (total - total = 3 - 3 = 0) whilst my Xerox returns -1 (last number - total = 2 - 3 = -1).

I'm also curious as to whether this is truely incorrect key sequenes :p the same way that if you hit enter more than once it re-applies the last calculation, perhaps this is actually a feature

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