Is it possible to write 0.5 in binary format?

[Specabecca]

^ is correct.

Originally posted by: wfbberzerker
isnt it a repeating number?

No. The answer is .1

 

[Yax]

Here's how you write it:

1/10

 

[OverVolt]

Yea IEEE floating point uses binary right of the decimal point.

 

[MercenaryForHire]

Originally posted by: Howard

Originally posted by: ndee
it's 0.1 but I don't know why, I thought wrong. Cuz according to my logic, 1/4 would also be 0.1 but that's wrong, it would be 0.01, no idea why thought.

Skipped over my post, eh?

Nah, he just sucks at math. 😛

- M4H

 

[dabuddha]

Originally posted by: Pepsi90919

Originally posted by: dighn

Originally posted by: Pepsi90919

i've always done it by inverting the number and adding 1 to get a 2's complement number, then adding the other number.

yeah but you could do it the "natural" way too...

enlighten me?

11001100 (204)
- 110110 (54)
-------------------
10010110 (150)


It's simple and straight forward.

Or an easier example

110 (6)
-10 (2)
-----
100 (4)

 

[dighn]

Originally posted by: Pepsi90919

Originally posted by: dighn

Originally posted by: Pepsi90919

i've always done it by inverting the number and adding 1 to get a 2's complement number, then adding the other number.

yeah but you could do it the "natural" way too...

here's a good explanation: http://mathforum.org/library/drmath/view/55733.html

you can apply this to any base

 

[ndee]

Originally posted by: Howard

Originally posted by: ndee
it's 0.1 but I don't know why, I thought wrong. Cuz according to my logic, 1/4 would also be 0.1 but that's wrong, it would be 0.01, no idea why thought.

Skipped over my post, eh?

I was typing that post already but you were right 🙂

 

[ndee]

Originally posted by: MercenaryForHire

Originally posted by: Howard

Originally posted by: ndee
it's 0.1 but I don't know why, I thought wrong. Cuz according to my logic, 1/4 would also be 0.1 but that's wrong, it would be 0.01, no idea why thought.

Skipped over my post, eh?

Nah, he just sucks at math. 😛

- M4H

That's true, that's why I'm asking so many Math threads lately, which I'm sure you noticed 😉

 

[TuxDave]

0.1111...... = 1 (in binary)

 

[TuxDave]

One more point to make. Writing 1/10 in binary requires an infinite number of repeating digits.

 

[chiwawa626]

.5 in hex is: 3F000000
.5 in binary is: 0011 1111 0000 0000 0000 0000 0000 0000

Its called IEEE 754 Floating Point Format.

just for fun, something like -13.5625 would be:

hex: C15A0000
binary: 1100 0001 0101 0000 0000 0000 0000 0000