It isn't really so strange that they aren't used, if you think about it. Floating point is subject to fuzziness in the last several digits, and you can't guarantee that a given value is going to round the same way when you're dealing with multiple arches (or even multiple versions of what's nominally the same arch, since optimizations change over time). Undefined behaviour is nasty. Floating point is useful for many things, but I'd keep it out of a cross-platform system kernel unless I liked hard-to-diagnose bugs.
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With the LLM pushers driving hardware prices through the roof, will any of us be able to afford these?