Hacker News: cokernel_hacker

New comment by cokernel_hacker in "Scientists complete Schrödinger's 100-year-old color theory"

cokernel_hacker — Tue, 09 Jun 2026 20:50:26 +0000

The actual paper is:

"The Geometry of Color in the Light of a Non-Riemannian Space"

https://onlinelibrary.wiley.com/doi/10.1111/cgf.70136

Scientists complete Schrödinger's 100-year-old color theory

cokernel_hacker — Tue, 09 Jun 2026 20:48:04 +0000

Article URL: https://www.sciencedaily.com/releases/2026/06/260606015140.htm

Comments URL: https://news.ycombinator.com/item?id=48467522

Points: 5

# Comments: 1

VHDL's Crown Jewel

cokernel_hacker — Mon, 30 Mar 2026 04:39:15 +0000

Article URL: https://www.sigasi.com/opinion/jan/vhdls-crown-jewel/

Comments URL: https://news.ycombinator.com/item?id=47570435

Points: 149

# Comments: 62

U+237C ⍼ Is Azimuth

cokernel_hacker — Tue, 10 Mar 2026 22:33:45 +0000

Article URL: https://ionathan.ch/2026/02/16/angzarr.html

Comments URL: https://news.ycombinator.com/item?id=47329605

Points: 402

# Comments: 81

Variable interpolatable smooth curves and outlines

cokernel_hacker — Wed, 25 Feb 2026 17:08:14 +0000

Article URL: https://thottingal.in/blog/2026/02/20/var-interpolatable-smooth-curves/

Comments URL: https://news.ycombinator.com/item?id=47154316

Points: 3

# Comments: 0

New comment by cokernel_hacker in "Diff Algorithms"

cokernel_hacker — Wed, 01 Oct 2025 04:29:44 +0000

It seems he is still active in the bioinformatics space: https://github.com/thegenemyers/FASTK

New comment by cokernel_hacker in "Obituary for Cyc"

cokernel_hacker — Wed, 09 Apr 2025 00:07:31 +0000

What if it breaks in a way which renders it no longer a chair for you but not others?

This seems to imply that what is or is not a chair is a subjective or conditional.

New comment by cokernel_hacker in "Windows NT for GameCube/Wii"

cokernel_hacker — Wed, 05 Mar 2025 01:39:38 +0000

It was almost certainly added in order to support EFI which uses PE/COFF format binaries.

New comment by cokernel_hacker in "Grug’s Guide to Sound"

cokernel_hacker — Tue, 17 Dec 2024 17:03:27 +0000

Internal DACs/amps have gotten a lot better, at least in Apple products.

https://support.apple.com/en-us/108351

https://www.audiosciencereview.com/forum/index.php?threads/r...

The non-Riemannian nature of perceptual color space

cokernel_hacker — Sun, 10 Nov 2024 22:36:58 +0000

Article URL: https://pmc.ncbi.nlm.nih.gov/articles/PMC9170152/

Comments URL: https://news.ycombinator.com/item?id=42103064

Points: 2

# Comments: 0

New comment by cokernel_hacker in "Breaking Bad: How Compilers Break Constant-Time~Implementations"

cokernel_hacker — Wed, 23 Oct 2024 15:47:52 +0000

ARM has DIT: https://developer.arm.com/documentation/ddi0595/2021-06/AArc...

Intel has DOIT: https://www.intel.com/content/www/us/en/developer/articles/t...

The idea is that the processor will not take shortcuts that take advantage of the values it is processing. For example, a 64-bit division cannot shortcut if the operands are both small, etc.

New comment by cokernel_hacker in "EUV LLC: An Historical Perspective"

cokernel_hacker — Thu, 05 Sep 2024 19:40:34 +0000

With chip fabrication technology in the spotlight lately, this book chapter on the history of EUV development and DARPA's role might be of interest to some.

EUV LLC: An Historical Perspective

cokernel_hacker — Thu, 05 Sep 2024 19:40:34 +0000

Article URL: https://www.spiedigitallibrary.org/ebooks/PM/EUV-Lithography/2/EUV-LLC-An-Historical-Perspective/10.1117/3.769214.ch2#_=_

Comments URL: https://news.ycombinator.com/item?id=41459796

Points: 1

# Comments: 1

New comment by cokernel_hacker in "Undefined behavior in C is a reading error (2021)"

cokernel_hacker — Thu, 05 Sep 2024 02:37:27 +0000

So let's change it up a bit.

  typedef int (*pfn)(void);
  int g(void);
  int h(void);

  pfn f(double x) {
    switch ((long long)x) {
    case 0:
      return g;
    case 17:
      return h;
    }
  }

If I understand your perspective correctly, `f` should return whatever happens to be in rax if the caller does not pass in a number which truncates to 0 or 17?

New comment by cokernel_hacker in "Undefined behavior in C is a reading error (2021)"

cokernel_hacker — Thu, 05 Sep 2024 02:16:40 +0000

What behavior should the following have:

  int f(int x) {
    switch (x) {
    case 0:
      return 31;
    case 1:
      return 28;
    case 2:
      return 30;
    }
  }

This code on its own has no undefined behavior.

In another translation unit, someone calls `f(3)`. What would you have compilers do in that case?

That path through the program has undefined behavior. However, the two translation units are separate and as such normal tooling will not be able to detect any sort of UB without some kind of whole program static analysis or heavy instrumentation which would harm performance.

New comment by cokernel_hacker in "Undefined behavior in C is a reading error (2021)"

cokernel_hacker — Thu, 05 Sep 2024 02:08:08 +0000

That works for a lot of behavior but not everything. For example:

  int f(int x) {
    static int y[] = {42, 43};
    return y[x];
  }

What behavior should `f(-1)` or `f(100)` have? What is sensible?

RVV may not be as good as you think

cokernel_hacker — Fri, 23 Aug 2024 15:39:10 +0000

Article URL: https://blog.quarticcat.com/posts/rvv-may-not-be-as-good-as-you-think/

Comments URL: https://news.ycombinator.com/item?id=41329900

Points: 1

# Comments: 0

Designing a Better Strcpy

cokernel_hacker — Sun, 14 Jul 2024 00:53:40 +0000

Article URL: https://saagarjha.com/blog/2020/04/12/designing-a-better-strcpy/

Comments URL: https://news.ycombinator.com/item?id=40958069

Points: 8

# Comments: 0

P3292R0R0 Provenance and Concurrency

cokernel_hacker — Sat, 01 Jun 2024 06:48:18 +0000

Article URL: https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2024/p3292r0.html

Comments URL: https://news.ycombinator.com/item?id=40543469

Points: 2

# Comments: 0

Non-Euclidean Geometry and Games

cokernel_hacker — Thu, 16 May 2024 16:33:21 +0000

Article URL: https://zenorogue.medium.com/non-euclidean-geometry-and-games-fb46989320d4

Comments URL: https://news.ycombinator.com/item?id=40380297

Points: 2

# Comments: 0