Viewing profile — mtklein

I don't think there is necessarily one ideal middle ground here. It still feels to me like what's best is a function that depends on who and when. I see it as something like a pers…

Yeah it makes me sad too. It's a one-way veil, no going back once I experienced the new magic. Sometimes I pop back into a terminal, mkdir, git init, crack my knuckles to do some a…

On about day 2 of using Fable I realized that the .vimrc I'd been maintaining for 15-20 years would probably never change again. With Opus I still feel like I'm pair coding and wan…

I have never seen Codex or Claude get manual memory management wrong. I used to be pretty fastidious about using leak sanitizer or other such tools to catch my own memory managemen…

Part of that could be ABI constraints. There are some surprising calling convention differences between a vector and a struct or union with vectors in it, and they vary platform to…

I hate to admit it, but the Corona "Change your Latitude" ads are what locked it in for me.

what I mean here about NaNs is that from a testing perspective, I want to be able to write a test that expects NaN in the same way that I write other expectations, and you can't do…

My preference in tests is a little different than just using IEEE 754 ==, _Bool equiv(float x, float y) { return (x which both handles NaNs sensibly (all NaNs are equivalent) and w…

Yes, it's a "Brain float", basically an ordinary 32-bit float with the low 16 mantissa bits cut off. Exact same range as fp32, lower precision, and not the same as the other fp16, …

The closest term I know is "just-so story".

I am also not looking forward to the system transitioning from "big experiment, burn money to make it good" to "established business unit, tweak it to death for incrementally more …

If I remember correctly, the AVX2 feature set is a fairly direct upscale of SSE4.1 to 256 bit. Very few instructions even allowed interaction between the top and bottom 128 bits, I…

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I agree with you, but we must admit that The Expanse has all of spaceships bouncing around, explosion sounds, and superhumans.

This is astonishingly bad power usage for a laptop, a complete dealbreaker: "...early tests show that the SoC already draws about 16 watts at idle..."

This was a nice surprise when learning to code for NES, that I could write pretty much normal C and have it work on the 6502. A lot of tutorials warn you, "prepare for weird code" …

Zig is so good at this, it is also probably the easiest way to cross-compile C.

I think this is _Alignas/alignas. struct foo { _Alignas(64) float x,y; _Alignas(64) int z; }; _Static_assert(sizeof(struct foo) == 192, "");

I very much used to agree with this, but some time this summer the ChatGPT iOS app started to change this for me. I have definitely had days where I've felt as coding-creative as I…

I don't understand why this article invents and explains a phony ranged-float fix when the real fix from the footnotes would have been just as simple to explain. The deception need…

You're not wrong that he wasn't physically fit, but he was also one of the most human people many of us in this thread have ever met.

For a good long while at least, this flag was a signal for the browser to use CPU rendering, because of the overhead of GPU setup for rendering very changing content was too high. …

I found this especially nice working with large SIMD constants.

Okay, I'll bite: 2 and 5 are prime, this is the perfect fifth problem, only approximate solutions are possible. Make me wrong!

I completely agree that technology in the last couple years has genuinely been fulfilling the promise established in my childhood sci-fi. The other day, alone in a city I'd never b…