8/16/2026 at 7:25:41 PM
by iliketrains
8/20/2026 at 3:54:59 PM
AI has rediscovered https://www.davidhbailey.com/dhbsoftware/ and similar? Or are there algorithmic improvements? Without referencing established double-double work it's hard to know.by tobias2014
8/20/2026 at 3:56:03 PM
Fun fact - Google Maps does something similar to this in WebGL in order to keep accurate coordinates across a planet-sized map using only 32-bit floats.by aappleby
8/21/2026 at 7:22:17 AM
This sounds interesting, is this documented somewhere?by iliketrains
8/21/2026 at 5:44:37 AM
Such trick looks interesting. But I think for many cases it would be better to use fixed-width arithmetic based on 128-bit integers. Operations for them are much cheaper if done right (and assuming compilers are smart enough to optimize them). For the Mandelbrot set one don't need huge range, maybe 4 bits of range or so, the remaining 124 bits of precision can increase quality significantly.by Panzerschrek
8/21/2026 at 7:21:16 AM
[dead]by iliketrains
8/20/2026 at 5:41:14 PM
I have a Go library implementing double-double arithmetic (and also exponentials, logarithms, trigonometry...): https://github.com/ncruces/dbldblMostly useless, but was quite fun to write.
by ncruces
8/21/2026 at 6:43:35 AM
This feels like a lot of words to say "a decimal point between two integers".by suprjami
8/20/2026 at 5:45:13 PM
If you need that precision, especially for position and not values, why use floats at all?by Scene_Cast2
8/20/2026 at 4:41:37 PM
Could be a neat post, but it was too obviously LLM-generated for me to care about reading it deeply. I’m really fine with people using LLMs to write code and understand stuff, but at least drop a disclaimer when you’re blogging straight Claude text.by wolfd
8/20/2026 at 4:58:56 PM
Could call it... 'a Hamburglar'by squiffsquiff
8/20/2026 at 7:24:50 PM
At least Dekker is referenced.by nickdothutton
8/20/2026 at 5:37:17 PM
Reads like AI slop. It circles around the point, uses C# examples while talking about FPU, duplicates examples and so on.by akomtu