this post was submitted on 17 Oct 2024
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Science Memes

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submitted 4 weeks ago by [email protected] to c/[email protected]
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[–] cobysev 172 points 4 weeks ago (5 children)

For anyone who doesn't want to do the conversion, that's 17 days.

[–] [email protected] 89 points 4 weeks ago (3 children)

Or -15 days

[–] Dabundis 43 points 4 weeks ago

Ominous

[–] [email protected] 5 points 4 weeks ago

Mmm yes. 5 bit two's complement.

I shouldn't make fun of it we've definitly made some ISA that weird.

[–] swag_money 2 points 4 weeks ago (1 children)

what's the general rule for translating negatives from binary? did you just do like 17 - 2 • (-1) or something?

[–] [email protected] 5 points 4 weeks ago (1 children)

I used what known as 2's compliment. Take the complement (flip all the bits - here that would give you 01110 which is 14) then add 1.

[–] swag_money 1 points 4 weeks ago (1 children)

thanks for the explanation! could you express it as a NOT operation plus one? like is that how it would be processed at a low level?

[–] computergeek125 2 points 3 weeks ago* (last edited 3 weeks ago)

My low level is a tad rusty from when I learned the C side in school, but if I recall the not operator resolves as a single Boolean (0 or 1 in true C), whereas compliment comes back as however many bits you put in - a not operation per bit.

In C, the not operator is ! and the compliment operator is ~

[–] chuckleslord 57 points 4 weeks ago (2 children)

It also has a max of 31 days possible. Which has... implications.

[–] [email protected] 16 points 4 weeks ago

Among many other duties I manage the safety and claims database for an outsourced industrial cleaning company and let me tell you, some of the plants my company works struggle to make it a week without an accident, meanwhile some will go years without an accident. We also have one plant which had its last accident during the Bush Administration. Its absolutely wild how much safety can vary from one industrial facility to another

[–] [email protected] 3 points 4 weeks ago (1 children)

🤔 .... What implications? ಠ⁠_⁠ಠ

[–] [email protected] 8 points 4 weeks ago* (last edited 4 weeks ago) (1 children)

They must sacrifice an undergrad on the 32nd day

[–] PumpkinSkink 3 points 4 weeks ago (1 children)

This is actually how chromatography works. The mobile phase is 0.1% formic acid and 0.3% blood of the innocent.

[–] Cenzorrll 2 points 4 weeks ago

blood of the innocent

Well, We work with what we have.

[–] [email protected] 40 points 4 weeks ago (2 children)

Unless it's a signed integer, then it's -1 and they're expecting something...

[–] DacoTaco 9 points 4 weeks ago (2 children)

A 5 bit long signed integer? What kind of weird system you using ? :p

[–] [email protected] 8 points 4 weeks ago

Two's complement

[–] [email protected] 1 points 1 week ago

Because a 5 bit unsigned integer is so much better? :p

[–] computergeek125 3 points 3 weeks ago

Only if you're using a sign bit rather than two's compliment (a sign bit allows for two representations of 0)

[–] Entropywins 4 points 4 weeks ago (1 children)

Or 11 in hexadecimal

[–] scholar 1 points 4 weeks ago (1 children)

B is 11 in hex though?

[–] [email protected] 6 points 4 weeks ago

As in, 0x11 is 17 in decimal.

[–] [email protected] 1 points 4 weeks ago

I did and I regret it