2026-10-22T12:42:26Z https://njump.me Raph Levien https://njump.me/npub1u57q26nymxm0aejthfcfpxgfctj38hqnscvstag685y873qwhgpq5fpmmr https://files.mastodon.online/accounts/avatars/109/295/123/757/597/229/original/cbee2f5766e0988f.jpg https://files.mastodon.online/accounts/avatars/109/295/123/757/597/229/original/cbee2f5766e0988f.jpg https://njump.me/nevent1qqsvtj62n7rdu050vxt4gyf9grj9qxms8ulh7gzupv7fwvzv4fcqpggzyrjncpt2vnvmdlhxfwa8pyyep8pw2y7uzwrpjp04rg7ssl6yp6aqyfklxtd I just posted a blog post on my hyperbezier curve: <a href="https://linebender.org/blog/hyperbezier/">https://linebender.org/blog/hyperbezier/</a><br/><br/>I&#39;ve actually been working on this for years, and only recently figured out a solution to the parameter mapping problem. I think this curve is potentially better than cubic Béziers for 2D vector graphic design. It is smoother but has the same useful expressive range.<br/> <img src="https://files.mastodon.online/media_attachments/files/117/068/155/820/656/211/original/326084e32f6a54d3.png"> <br/> 2026-08-09T23:29:09Z https://njump.me/nevent1qqs97yurkt8se996valyqs7pfq3tpsf4a6f2a3gfm9sswtglda7sw7gzyrjncpt2vnvmdlhxfwa8pyyep8pw2y7uzwrpjp04rg7ssl6yp6aqy55g65k Does anyone in the Bay Area want some historical computer books? Includes K&amp;R, Wirth&#39;s book on Pascal, HOPL 1, PostScript, IBM 1401, some computer music stuff, some logic. Pick up in Berkeley. Otherwise it gets dumped. 2025-12-31T17:32:05Z https://njump.me/nevent1qqsf8rvtxc6pnr0yfedphqvr0ngsuh29emxap5k052dvzf5nxnkhc3gzyrjncpt2vnvmdlhxfwa8pyyep8pw2y7uzwrpjp04rg7ssl6yp6aqyzp7ms2 In reply to <a href='/nevent1qqsxx8rpf56jtejma2sfvu4mt2rkcfnk7mt57llqgh7d69xp0tl5zfcy3es68'>nevent1q…es68</a><br/>_________________________<br/><br/>Yes, so glad I left. 2025-12-11T18:14:22Z https://njump.me/nevent1qqszg9x9r3hqgsmquxp255u6w2x8ypllwe25nd8awrjhh0aqsrxeksqzyrjncpt2vnvmdlhxfwa8pyyep8pw2y7uzwrpjp04rg7ssl6yp6aqy568e2h In reply to <a href='/nevent1qqsxmjcaljsmg9j6ndq0h03k2ekzqjaayswmph75vmpknl2q80u44nc4splh5'>nevent1q…plh5</a><br/>_________________________<br/><br/>I was more upset by this than I thought I would be. And I think the damage is enormous. Until yesterday, getting an email from the Social Security Administration was a trusted source of information, relied upon by many people who really need that.<br/><br/>I reported it as spam and unsubscribed, as I do with all unsolicited campaign ads. 2025-07-04T14:16:21Z https://njump.me/nevent1qqswc5s6w0c0n7gscvmkgtsm229vp7tfj384pak3rpln4cgyp0wcwhgzyrjncpt2vnvmdlhxfwa8pyyep8pw2y7uzwrpjp04rg7ssl6yp6aqydj7r5q In reply to <a href='/nevent1qqspnds98wy5rh6pl75fwwt7u4qs6g00jex38tqx6dr484fugt6qwngh63pgz'>nevent1q…3pgz</a><br/>_________________________<br/><br/>Apparently notices went out but Geico is cleaning it up. See the update at <a href="https://jalopnik.com/geico-is-cancelling-tesla-cybertruck-policies-as-it-doe-1851666570">https://jalopnik.com/geico-is-cancelling-tesla-cybertruck-policies-as-it-doe-1851666570</a> 2024-10-07T16:24:44Z https://njump.me/nevent1qqsgjqh3za2hqcu0xcau7pyxv5sfnzvshflxjcwvjs6qtqa530l3l5czyrjncpt2vnvmdlhxfwa8pyyep8pw2y7uzwrpjp04rg7ssl6yp6aqy3sykxg In reply to <a href='/nevent1qqswuwt7sqspzhfrahcr8dl6khk44vq3gmrc2vv5lc7f39cql323hccu9f22j'>nevent1q…f22j</a><br/>_________________________<br/><br/>I am happy to write it up if you like, but Ivan has it, except that int64(u) not a float-to-int case, it&#39;s an unsigned-to-signed cast.<br/><br/>I&#39;ve been doing quite a bit of low level bit magic in my sparse strip GPU path rendering implementation. That really needs a writeup! 2024-09-03T14:12:04Z https://njump.me/nevent1qqsqkqu5k843n69kzevstv4mnnm9wx393p70zh4tnz587g50naefm7czyrjncpt2vnvmdlhxfwa8pyyep8pw2y7uzwrpjp04rg7ssl6yp6aqyshgmuz In reply to <a href='/nevent1qqsqxcc8hdd6f73myhchkhh0pczfweryrj5ta5puaq9z76ufrhcj0ds348pz4'>nevent1q…8pz4</a><br/>_________________________<br/><br/>I think you can save one instruction by doing:<br/><br/>mask := uint64((int64(u) &gt;&gt; 63)) | (1 &lt;&lt; 63)<br/><br/>In my godbolt, this compiles as an arithmetic right shift as opposed to a logical right shift followed by negation. 2024-09-03T01:32:44Z