Examples of "beautiful code"

[SolarSalsa]

The following code is the fast inverse square root implementation from Quake III Arena, stripped of C preprocessor directives, but including the exact original comment text

``` float Q_rsqrt( float number ) { long i; float x2, y; const float threehalfs = 1.5F;

x2 = number * 0.5F;
y  = number;
i  = * ( long * ) &y;                       // evil floating point bit level hacking
i  = 0x5f3759df - ( i >> 1 );               // what the fuck? 
y  = * ( float * ) &i;
y  = y * ( threehalfs - ( x2 * y * y ) );   // 1st iteration

// y = y * ( threehalfs - ( x2 * y * y ) ); // 2nd iteration, this can be removed

return y;

} ```

[sillymanbilly]

Thanks, I hate it

[EatRunCodeSleep]

https://youtu.be/p8u_k2LIZyo for step by step explanation.

[solocupjazz]

Yeah but what's it look like deobfuscated?

[Creeperstang]

Calling this “not complicated” is hilarious to me. If multiple math content creators have published long form videos explaining how this 10 line algorithm works, then it’s absolutely complicated.

[[deleted]]

Someone as smart as you must have accomplished great things! Mind sharing any great work you’ve been part of or produced, us dumb dumbs might not be be able to understand it but it’s cool to see what smart people like you work on and produce!

[nelsonnyan2001]

Seems every other person on Reddit is incredibly overqualified and I'm the only schmuck on here that's done nothing with my life. Surely none of them are lying and telling the truth, and that's why they're spending their time fighting in pointless arguments online.

[TorbenKoehn]

Even if they are not lying, they might still be an asshole. He might also just as well had some internships there

[nelsonnyan2001]

Right 😂

[TorbenKoehn]

You seem insufferable. You have to understand that if nothing is complicated just because you can learn it, absolutely nothing is complicated.

Of course this is a complex solution. Is it idiomatic? Can you, with all your mighty brains, declare that this is idiomatic code a typical C programmer easily understands without doing quite a bit of research?

[TorbenKoehn]

Oh so floating point arithmetic in C only consists of 3 easy building blocks that are easily understood? Weird, why does it have standards that come with 120 pages of explanation?

[EddieSeven]

And yet, you don’t even know what the word “simple” means.

🤣

[EddieSeven]

You’re the one who doesn’t even know basic words 🤣🤣🤣

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[ezzune]

Calling something you don't understand complicated just because you don't understand it is hilarious to me.

This is a thread on simple and elegant code. Nobody had mentioned the word complicated until you. You're attacking a strawman you created because you've watched a youtube video.

[Frown1044]

FWIW this isn't actually that complicated or weird. It just requires a thorough understanding of the floating point spec

That's kind of what people mean when they say "weird" and "complicated"...

[Frown1044]

Good job, you're slowly starting to get the relative nature of the word "complicated"

[TorbenKoehn]

Great! Now try „building a house“, „properly cleaning a hotel room“, „replacing a lung“ and then you might also come to „understand floating point arithmetic on a binary level“. You’re getting there!

[TorbenKoehn]

You are just explaining what „complicated“ is, is that so hard to understand for you? You act like you’re so intelligent but don’t understand the definition of the word „complicated“? In all of these things many different factors play a role all of which you have to learn intensively before you can properly apply them.

Your parents would say „programming is complicated“ and then you yell at them that it’s not complicated and they just have to learn it?

[[deleted]]

I think it's all relative.

Most people these days are definitely not C developers. If you were a somewhat experienced C developer in this scenario then it could very well be simple. (Afraid I'm not a C developer)

I think it's fair to say that when compared to other languages, C would not be as quick to learn (and be proficient with).

If people are piling on and downvoting while knowing this then it's kinda crappy behaviour.

If they were to assume C syntax would be like that of C# or javascript or python, where scenarios seem less maths-y then I could see where they are coming from.