| 2025-03-26 00:03:22 +0100 | <geekosaur> | keep it but require `import IEEE754Insanity` |
| 2025-03-26 00:05:23 +0100 | poscat | (~poscat@user/poscat) (Ping timeout: 245 seconds) |
| 2025-03-26 00:05:44 +0100 | poscat | (~poscat@user/poscat) poscat |
| 2025-03-26 00:05:56 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
| 2025-03-26 00:06:04 +0100 | weary-traveler | (~user@user/user363627) user363627 |
| 2025-03-26 00:06:16 +0100 | <otto_s> | Is there a reason, why the imaginary party of -1 :: Complex Double *should* be -0 ? |
| 2025-03-26 00:08:54 +0100 | <otto_s> | Oh, I see, mauke answered that already. |
| 2025-03-26 00:10:41 +0100 | <otto_s> | Floats are evil. *g* |
| 2025-03-26 00:10:43 +0100 | <geekosaur> | I think the full answer involves complex numbers as being on a plane, and having trig on them produce results in the correct quadrant? |
| 2025-03-26 00:11:26 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) (Ping timeout: 268 seconds) |
| 2025-03-26 00:12:26 +0100 | <otto_s> | No, I think the culprit is just: |
| 2025-03-26 00:12:29 +0100 | <otto_s> | > isNegativeZero $ negate 0 |
| 2025-03-26 00:12:31 +0100 | <lambdabot> | True |
| 2025-03-26 00:13:12 +0100 | <geekosaur> | right, but what I said is why the whole "negative zero" thing exists in the first place. see also atan2 |
| 2025-03-26 00:13:17 +0100 | <otto_s> | (and then late, of course, how log decides where to go) |
| 2025-03-26 00:14:11 +0100 | <otto_s> | Yes. |
| 2025-03-26 00:15:39 +0100 | <geekosaur> | sadly it's been a looong time since I last did this stuff so it's all become kinda fuzzy ("use it or lose it") |
| 2025-03-26 00:16:25 +0100 | <geekosaur> | last time I touched it was 1985 |
| 2025-03-26 00:21:43 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
| 2025-03-26 00:23:08 +0100 | __monty__ | (~toonn@user/toonn) (Quit: leaving) |
| 2025-03-26 00:25:18 +0100 | byte | (~mu@user/byte) (Quit: Leaving) |
| 2025-03-26 00:25:48 +0100 | sarna | (~sarna@d192-22.icpnet.pl) (Ping timeout: 245 seconds) |
| 2025-03-26 00:26:38 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) (Ping timeout: 245 seconds) |
| 2025-03-26 00:27:21 +0100 | aetepe | (~aetepe@188.119.22.83) aetepe |
| 2025-03-26 00:30:26 +0100 | weary-traveler | (~user@user/user363627) (Remote host closed the connection) |
| 2025-03-26 00:33:37 +0100 | byte | (~mu@user/byte) byte |
| 2025-03-26 00:35:20 +0100 | simplystuart | (~simplystu@c-75-75-152-164.hsd1.pa.comcast.net) (Ping timeout: 252 seconds) |
| 2025-03-26 00:35:45 +0100 | simplystuart | (~simplystu@c-75-75-152-164.hsd1.pa.comcast.net) |
| 2025-03-26 00:37:31 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
| 2025-03-26 00:40:56 +0100 | alfiee | (~alfiee@user/alfiee) alfiee |
| 2025-03-26 00:42:05 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) (Ping timeout: 244 seconds) |
| 2025-03-26 00:45:17 +0100 | sarna | (~sarna@d192-22.icpnet.pl) sarna |
| 2025-03-26 00:45:45 +0100 | alfiee | (~alfiee@user/alfiee) (Ping timeout: 265 seconds) |
| 2025-03-26 00:45:46 +0100 | sprotte24 | (~sprotte24@p5dd5d056.dip0.t-ipconnect.de) (Quit: Leaving) |
| 2025-03-26 00:51:04 +0100 | Tuplanolla | (~Tuplanoll@91-159-69-59.elisa-laajakaista.fi) Tuplanolla |
| 2025-03-26 00:53:18 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
| 2025-03-26 00:57:53 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) (Ping timeout: 244 seconds) |
| 2025-03-26 01:04:38 +0100 | robobub | (uid248673@id-248673.uxbridge.irccloud.com) robobub |
| 2025-03-26 01:07:01 +0100 | sarna | (~sarna@d192-22.icpnet.pl) (Ping timeout: 265 seconds) |
| 2025-03-26 01:09:05 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
| 2025-03-26 01:11:27 +0100 | weary-traveler | (~user@user/user363627) user363627 |
| 2025-03-26 01:12:06 +0100 | <EvanR> | > atan (recip 0) |
| 2025-03-26 01:12:07 +0100 | <lambdabot> | 1.5707963267948966 |
| 2025-03-26 01:12:12 +0100 | <EvanR> | > atan (recip (-0)) |
| 2025-03-26 01:12:14 +0100 | <lambdabot> | -1.5707963267948966 |
| 2025-03-26 01:13:21 +0100 | <EvanR> | also the way I do decode float in another universe is return (sign, mantissa, exponent) |
| 2025-03-26 01:14:45 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) (Ping timeout: 276 seconds) |
| 2025-03-26 01:16:00 +0100 | <Leary> | otto_s: May I introduce you to your lord and saviour `LexicalNegation`? It will ensure that `-1` means `fromInteger -1`, not `negate (fromInteger 1)`, hence `-1 = -1 :+ 0`. |
| 2025-03-26 01:16:29 +0100 | tomboy64 | (~tomboy64@user/tomboy64) (Ping timeout: 244 seconds) |
| 2025-03-26 01:16:50 +0100 | <Leary> | I would like to demonstrate with yahb2, but it's being weird: |
| 2025-03-26 01:16:57 +0100 | <Leary> | % import Data.Complex |
| 2025-03-26 01:16:57 +0100 | <yahb2> | <no location info>: error: [GHC-88719] ; Could not load module ‘Data.Complex’. ; Perhaps you haven't installed the "dyn" libraries for package ‘base-4.21.0.0’? ; Use :set -v to see a li... |
| 2025-03-26 01:17:02 +0100 | <Leary> | tomsmeding: ^ halp |
| 2025-03-26 01:17:28 +0100 | <geekosaur> | think he's in bed by now, sadly |
| 2025-03-26 01:17:45 +0100 | <geekosaur> | utc-2 iirc so it's like 2am |
| 2025-03-26 01:18:25 +0100 | <EvanR> | indeed it's only 54 dotbeats |
| 2025-03-26 01:20:50 +0100 | tomboy64 | (~tomboy64@user/tomboy64) tomboy64 |
| 2025-03-26 01:21:39 +0100 | zungi | (~tory@user/andrewchawk) andrewchawk |
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| 2025-03-26 01:29:06 +0100 | ljdarj1 | ljdarj |
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| 2025-03-26 01:47:01 +0100 | TheCoffeMaker | (~TheCoffeM@user/thecoffemaker) (Ping timeout: 268 seconds) |
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| 2025-03-26 01:55:24 +0100 | acidjnk | (~acidjnk@p200300d6e71c4f2435ff52636e0f7274.dip0.t-ipconnect.de) (Remote host closed the connection) |
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| 2025-03-26 01:58:43 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
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| 2025-03-26 02:17:34 +0100 | otto_s | (~user@p4ff27de5.dip0.t-ipconnect.de) |
| 2025-03-26 02:21:33 +0100 | JuanDaugherty | (~juan@user/JuanDaugherty) (Quit: praxis.meansofproduction.biz (juan@acm.org)) |
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| 2025-03-26 02:26:21 +0100 | vanishingideal | (~vanishing@user/vanishingideal) vanishingideal |
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| 2025-03-26 02:40:45 +0100 | Tuplanolla | (~Tuplanoll@91-159-69-59.elisa-laajakaista.fi) Tuplanolla |
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| 2025-03-26 02:43:48 +0100 | inca | (~inca@4-138-135-64.gray-ng.dsl.pinetreenetworks.com) |
| 2025-03-26 02:48:18 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
| 2025-03-26 02:48:47 +0100 | inca | (~inca@4-138-135-64.gray-ng.dsl.pinetreenetworks.com) (Ping timeout: 252 seconds) |
| 2025-03-26 02:52:50 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) (Ping timeout: 252 seconds) |
| 2025-03-26 02:53:16 +0100 | xff0x | (~xff0x@fsb6a9491c.tkyc517.ap.nuro.jp) |
| 2025-03-26 02:54:10 +0100 | <monochrom> | It looks like -1 :: Complex Double becomes - (1 :+ 0) so it is (-1) :+ (-0) |
| 2025-03-26 02:55:13 +0100 | <geekosaur> | yes, that's because of how the Report specifies unary negation |
| 2025-03-26 02:55:20 +0100 | <monochrom> | You could blame how there are +0 and -0, but numerical analysis people actually complain about how Java screws up everything by eliminating that. |
| 2025-03-26 02:55:32 +0100 | inca | (~inca@4-138-135-64.gray-ng.dsl.pinetreenetworks.com) |
| 2025-03-26 02:55:51 +0100 | <geekosaur> | NegativeLiterals or LexicalNegation changes it |
| 2025-03-26 02:56:30 +0100 | alfiee | (~alfiee@user/alfiee) alfiee |
| 2025-03-26 02:57:02 +0100 | Tuplanolla | (~Tuplanoll@91-159-69-59.elisa-laajakaista.fi) (Quit: Leaving.) |
| 2025-03-26 02:57:39 +0100 | <monochrom> | https://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html has a section on how having -0 is helpful for complex numbers. |
| 2025-03-26 02:58:19 +0100 | notdabs | (~Owner@2600:1700:69cf:9000:5812:4103:61ba:7880) (Read error: Connection reset by peer) |
| 2025-03-26 02:59:25 +0100 | Square | (~Square@user/square) Square |
| 2025-03-26 02:59:37 +0100 | <monochrom> | I believe in the principle that the largest stakeholders should have the largest say. In this case physicists and numerical people who use floating point in anger should have a much larger say than us casual occasional users. And their verdict is clear, all the IEEE 754 "weirdness" is what they want. |
| 2025-03-26 03:01:01 +0100 | alfiee | (~alfiee@user/alfiee) (Ping timeout: 268 seconds) |
| 2025-03-26 03:03:40 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
| 2025-03-26 03:03:55 +0100 | <haskellbridge> | <Bowuigi> Posits may be better for the rest of us |
| 2025-03-26 03:05:17 +0100 | <c_wraith> | Fixed point is better for my use cases |
| 2025-03-26 03:06:46 +0100 | peterbecich | (~Thunderbi@syn-047-229-123-186.res.spectrum.com) peterbecich |
| 2025-03-26 03:08:25 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) (Ping timeout: 268 seconds) |
| 2025-03-26 03:11:42 +0100 | weary-traveler | (~user@user/user363627) (Remote host closed the connection) |
| 2025-03-26 03:19:02 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
| 2025-03-26 03:23:43 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) (Ping timeout: 245 seconds) |
| 2025-03-26 03:26:12 +0100 | <Axman6> | @tell Liamzee https://github.com/the-benchmarker/web-frameworks/pull/8328 |
| 2025-03-26 03:26:12 +0100 | <lambdabot> | Consider it noted. |
| 2025-03-26 03:26:13 +0100 | aforemny_ | (~aforemny@2001:9e8:6cde:a00:bd3b:75a2:c3bc:65be) (Ping timeout: 265 seconds) |
| 2025-03-26 03:26:32 +0100 | bitdex_ | (~bitdex@gateway/tor-sasl/bitdex) bitdex |
| 2025-03-26 03:27:35 +0100 | bitdex | (~bitdex@gateway/tor-sasl/bitdex) (Remote host closed the connection) |
| 2025-03-26 03:28:11 +0100 | aforemny | (~aforemny@i59F4C69B.versanet.de) aforemny |
| 2025-03-26 03:34:50 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
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| 2025-03-26 03:46:24 +0100 | vanishingideal | (~vanishing@user/vanishingideal) vanishingideal |
| 2025-03-26 03:47:08 +0100 | Pixi | (~Pixi@user/pixi) Pixi |
| 2025-03-26 03:51:45 +0100 | TheCoffeMaker | (~TheCoffeM@user/thecoffemaker) TheCoffeMaker |
| 2025-03-26 03:52:53 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
| 2025-03-26 03:55:35 +0100 | bitdex_ | (~bitdex@gateway/tor-sasl/bitdex) (Remote host closed the connection) |
| 2025-03-26 03:55:41 +0100 | bitdex | (~bitdex@gateway/tor-sasl/bitdex) bitdex |
| 2025-03-26 03:57:44 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) (Ping timeout: 252 seconds) |
| 2025-03-26 04:08:40 +0100 | merijn | (~merijn@host-vr.cgnat-g.v4.dfn.nl) merijn |
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| 2025-03-26 04:15:48 +0100 | <EvanR> | > -1 :: Complex Double |
| 2025-03-26 04:15:50 +0100 | <lambdabot> | (-1.0) :+ (-0.0) |
| 2025-03-26 04:16:10 +0100 | <EvanR> | it Shows -0 in the imaginary part all along lol |
| 2025-03-26 04:16:22 +0100 | <geekosaur> | % :set -XLexicalNegation |
| 2025-03-26 04:16:22 +0100 | <yahb2> | <no output> |
| 2025-03-26 04:16:35 +0100 | <geekosaur> | % -1 :: Complex Double |
| 2025-03-26 04:16:35 +0100 | <yahb2> | <interactive>:377:7: error: [GHC-76037] ; Not in scope: type constructor or class ‘Complex’ |
| 2025-03-26 04:16:42 +0100 | <EvanR> | funny it took so long to "prove" |
| 2025-03-26 04:16:54 +0100 | <geekosaur> | oh wait, someone tried to import that and it errored |
| 2025-03-26 04:17:02 +0100 | <geekosaur> | % import Data.Complex |
| 2025-03-26 04:17:03 +0100 | <yahb2> | <no location info>: error: [GHC-88719] ; Could not load module ‘Data.Complex’. ; Perhaps you haven't installed the "dyn" libraries for package ‘base-4.21.0.0’? ; Use :set -v to see a li... |
| 2025-03-26 04:19:11 +0100 | developer_ | (~developer@85.50.149.196) |
| 2025-03-26 04:19:52 +0100 | <EvanR> | that -0 compares equal to "just" 0, and there's no corresponding "plus zero" condition for the result of positive underflows says to me they considered negative zero to be a "bonus feature" which could usually be ignored, or utilized for more information in some cases |
| 2025-03-26 04:20:15 +0100 | <EvanR> | when addition exactly cancels you get just zero, never negative |
| 2025-03-26 04:20:19 +0100 | <haskellbridge> | <Liamzee> i hope this question isn't too dumb, but |
| 2025-03-26 04:20:26 +0100 | <geekosaur> | ghci> -1 :: Complex Double |
| 2025-03-26 04:20:26 +0100 | <geekosaur> | (-1.0) :+ 0.0 |
| 2025-03-26 04:20:29 +0100 | <haskellbridge> | <Liamzee> oh, chat is active, sorry |
| 2025-03-26 04:20:34 +0100 | random-jellyfish | (~developer@user/random-jellyfish) (Ping timeout: 260 seconds) |
| 2025-03-26 04:20:38 +0100 | <geekosaur> | go ahead |
| 2025-03-26 04:21:04 +0100 | <haskellbridge> | <Liamzee> i'm building a rust-based microservices router, with the initial microservices being in Haskell |
| 2025-03-26 04:21:05 +0100 | <geekosaur> | EvanR, that behavior is specified by IEEE754 |
| 2025-03-26 04:21:18 +0100 | <EvanR> | I'm sure it is |
| 2025-03-26 04:21:22 +0100 | <haskellbridge> | <Liamzee> if I want to pass the IP of the sender, how would I get warp / servant / twain to get the IP? |
| 2025-03-26 04:21:45 +0100 | <geekosaur> | monochrom posted an Oracle doc explaining it, beyond that I think the specification itself is probably the best source |
| 2025-03-26 04:21:56 +0100 | <EvanR> | just noting there's no corresponding plus zero |
| 2025-03-26 04:22:03 +0100 | <EvanR> | so it's an asymmetric feature |
| 2025-03-26 04:22:33 +0100 | <geekosaur> | yes, and it exists solely to put zeroes in the correct quadrant on a plane |