2025/11/21

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2025-11-21 06:24:18 +0100 <monochrom> (Difference between by-name and macro expansion: The latter suffers variable capture issues!)
2025-11-21 06:23:19 +0100 <monochrom> (Difference between lazy and by name: lazy memoizes, by-name doesn't.)
2025-11-21 06:22:09 +0100 <monochrom> EvanR: Haha define what function application means. I like that. I propose 5 choices: call by value left-to-right, call by value right-to-left, call by need (lazy), call by name, TeX-like macro
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2025-11-21 06:07:03 +0100vardhan(~vardhan@122.172.85.147)
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2025-11-21 05:55:06 +0100trickard_trickard
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2025-11-21 05:50:36 +0100democritus(~democritu@2600:1700:ba69:10:ad1b:59dc:c894:12ec)
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2025-11-21 05:44:30 +0100merijn(~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn
2025-11-21 05:40:47 +0100 <EvanR> exact real numbers, yes
2025-11-21 05:40:33 +0100 <EvanR> chromoblob, this is false for floats, and is the correct thing to do in some cases
2025-11-21 05:40:13 +0100 <EvanR> attempting to use math on a computer is a source of errors in programs. avoidance recommended
2025-11-21 05:40:04 +0100 <chromoblob> you should never test "real" numbers for equality, it's not meaningful in computers
2025-11-21 05:40:02 +0100 <jreicher> That's really interesting. I object to it on mathematically purist grounds, which I'm only half-serious about, but that actually looks like it matters.
2025-11-21 05:38:53 +0100 <fgarcia> a source of errors in programs, if software developers do not take into account that while the two zero representations behave as equal under numeric comparisons, they yield different results in some operations."
2025-11-21 05:38:51 +0100 <fgarcia> "It is claimed that the inclusion of signed zero in IEEE 754 makes it much easier to achieve numerical accuracy in some critical problems, in particular when computing with complex elementary functions. On the other hand, the concept of signed zero runs contrary to the usual assumption made in mathematics that negative zero is the same value as zero. Representations that allow negative zero can be