Benathon
41.5K posts
Benathon
@Benathon
Dev. Founder. Free Speech. #gamedev Bitcoin, XMR. 3D printing. 250mm drones. Linux, C++, RF and DSP with SDR, Verilog, node, WASM. Hackathons. Bay Area.
SF bayarea Katılım Haziran 2012
6K Takip Edilen2.3K Takipçiler
Benathon retweetledi
awesome things/products can happen when you have an open source FPGA tool chain. No fear that the FPGA vendor does change the tool license.
github.com/controlpaths/c…
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Benathon retweetledi
Redis does not use C strings
antirez wrote a custom string library called SDS: Simple Dynamic Strings
it later became a standalone library
C strings had three problems Redis could not accept
- strlen is O(n) because it scans until the null terminator
- strcat needs manual capacity management and often scans the string again internally
- and C strings cannot safely store arbitrary binary data because null bytes end the string
SDS fixes all of this by storing metadata in a header placed right before the string buffer
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@Benathon @TrisH0x2A await is the difference between coroutines and regular functions.
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Benathon retweetledi
in 2000 a programmer discovered you can implement coroutines in C using the same switch trick as Duff's Device
it's called Tatham's Coroutine. it still compiles and is technically valid C
he used it in production inside PuTTY (the SSH client used by millions)
Simon Tatham's own words: "As far as I know, this is the worst piece of C hackery ever seen in serious production code."
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@llhtimlam @r3l0z That’s awesome but why is there a glitch at the median?
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Want to see distributed computing explained via Pong?
Inspired by TinyTPU and TinyTapeout workshop at FOSSi, I wrote a paper under a week pairs this demo with a proposed next-gen optical I/O chip architecture & a roadmap to prototype it.
Read it on GitHub: github.com/llhtimlam/tt_u…
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@Johnsmemes Consider surfing as a way to increase lymph flow all throughout your body to allow medication to reach every bit of the disease
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Currently sitting in the ER.
General body pain, tingling of limbs, extreme tiredness, dizzy and chest pains.
Even though I am on antibiotics, I might still be getting lyme disease.
I will keep y'all informed 🙏
John's Memes@Johnsmemes
Got home from camping to find this stuck in my leg. 😐
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Benathon retweetledi
NaN boxing
IEEE 754 says a 64-bit float is NaN when all 11 exponent bits are 1
but it leaves 52 mantissa bits undefined
and modern 64-bit pointers only use 47 bits
LuaJIT, JavaScriptCore, and SpiderMonkey all exploit this
every value in the language nil, true, false, integers, strings, pointers is stored inside a single 64-bit double
one 8-byte field carries any type
if the double is a real number it is just a normal float
if the upper 13 bits are all 1 it is a NaN
and the remaining bits carry the type tag and the payload
this is the actual layout from LuaJIT's lj_obj.h
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@PipingJam @TrisH0x2A But this way skips the first i=0 of the for loop. Something a static i could still do but not with the for loop logic. Or an empty first ;
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@TrisH0x2A Like the non macro way of writing this specific generator function is so much easier to understand, but maybe not the case for more general generators
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@TrisH0x2A Coroutines yield the CPU while awaiting. This silliness does not.
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@TrisH0x2A Ok I finally understand what’s going on here. I guess this is useful in some cases because it jumps down to the line when you resume. Yes this is cursed
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The best doctor have seen so far never lost a life while saving lives
Did you just see how extraordinary a doctor is supposed to be
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@dwarkesh_sp @reinerpope FPGAs have always been a great platform to explore and experiment with.
That’s why we’ve released a $4 FPGA dev board that gives you an Arduino-like MCU interface, along with an entry point into the FPGA world.
Now, learning FPGA costs less than your coffee.
@Vicharak_In
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Why do USB-C connectors not give a shit about lead protrusion >.<'
BlindVia@blind_via
What is Lead Protrusion? The distance that the pin extends beyond the bottom of the PCB is known as Lead protrusion. And when your pin is too short, and there is no protrusion, the strength of the solder join itself suffers. Connectors will go through more mechanical stress then other parts. Excessive lead protrusion can be addressed by trimming the pin afterwards. But may result in other challenges during assembly such as shorts if using wave soldering.
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Hmm… did people forget to take the undergraduate computer architecture course?
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@Freeaddition I know it’s a show but what a crock of shit! She couldn’t breathe yet still managed to wait for the ambulance to arrive and grill the nose lol 😂
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🎬 Wait for the point they had to drilled her nose 😳
Nashville 9.1.1
SON@StevenNickilzee
🎥 • Murphy beds are so cool but I will never have one because of scenarios like this😳 Nashville 9.1.1
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@CLAYGATLIN I have so many questions. What is resonance graph computing?
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