2066678716206289353

archive/threads/NOTimothyLottes/2026-06-16-unsigned-integer-divide-by-zero-x-0-what-answer/index.md

@@ -0,0 +1,40 @@
+---
+title: "Unsigned Integer divide by zero, x/0=?, what answer is preferred {x (nop), 0, or 0xffffffff (max integer)}?"
+type: archive
+source: twitter
+source_url: "https://x.com/NOTimothyLottes/status/2066678716206289353"
+author: "NOTimothyLottes"
+handle: NOTimothyLottes
+post_id: "2066678716206289353"
+date: 2026-06-16
+archived: 2026-08-28
+draft: false
+tags:
+  - archive
+  - twitter
+  - NOTimothyLottes
+description: "Unsigned Integer divide by zero, x/0=?, what answer is preferred {x (nop), 0, or 0xffffffff (max integer)}?"
+in_reply_to: ""
+---
+
+## Source
+
+- URL: https://x.com/NOTimothyLottes/status/2066678716206289353
+- Author: NOTimothyLottes (@NOTimothyLottes)
+- Posted: 2026-06-16 00:26:17
+
+## Thread
+
+**1/** **@NOTimothyLottes** ^2066678716206289353
+
+Unsigned Integer divide by zero, x/0=?, what answer is preferred {x (nop), 0, or 0xffffffff (max integer)}?
+
+**2/** **@NOTimothyLottes** ^2066690080098451916
+
+So I went with a NOP, and things get more interesting with signed divide, because on x86 there are 2 cases that will interrupt. So my div wrappers fix both cases to NOPs. Logically it works more like abs and neg in cases of overflow. Details in photo.
+
+![](https://pbs.twimg.com/media/HK5bq_uWkAA7xdU?format=jpg&name=orig)
+
+**3/** **@NOTimothyLottes** ^2066690873706836163
+
+I do agree it’s too bad x86 forces the interrupt, and I want zero chance of interrupt crash. In that regard same as others. However, interesting that I ended up in the opposite solution space as everyone else ;)

archive/threads/NOTimothyLottes/index.md

@@ -103,6 +103,7 @@ tags:
 - [[archive/threads/NOTimothyLottes/2026-06-13-interesting-how-on-this-linux-box-scheduling-nops]]
 - [[archive/threads/NOTimothyLottes/2026-06-13-nanorc-done-and-back-to-actual-programming-with]]
 - [[archive/threads/NOTimothyLottes/2026-06-14-on-linux-i-do-speculative-pinning-of-cpu-memory]]
+- [[archive/threads/NOTimothyLottes/2026-06-16-unsigned-integer-divide-by-zero-x-0-what-answer]]
 - [[archive/threads/NOTimothyLottes/2026-06-26-quick-summary-of-why-not-pselect-ppoll-epoll]]
 - [[archive/threads/NOTimothyLottes/2026-06-27-deterrent-to-alsa-is-just-parsing-through-snd-pcm]]
 - [[archive/threads/NOTimothyLottes/2026-06-29-alsa-hell-month-continues-remember-it-might-be]]