raptop changed the topic of #kspacademia to: https://gist.github.com/pdn4kd/164b9b85435d87afbec0c3a7e69d3e6d | Dogs are cats. Spiders are cat interferometers. | Космизм сегодня! | Document well, for tomorrow you may get mauled by a ネコバス. | <UmbralRaptor> egg|nomz|egg: generally if your eyes are dewing over, that's not the weather. | <ferram4> I shall beat my problems to death with an engineer. | We can haz pdf
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<egg|zzz|egg> whitequark: speaking of disturbing things, I am still trying to process T[static 1] as a syntax for a non-null pointer
<egg|zzz|egg> (but only as a function parameter)
<whitequark> lol
<egg|zzz|egg> (and obviously the insane grafting of const upon that, const T[static const 1]
<egg|zzz|egg> )
<egg|zzz|egg> whitequark: tbh looking at things like that or restrict etc., WG 14 is really doing a good job of competing with WG 21 at gluing tentacles onto their language
<bofh> what is WG 14?
<whitequark> the ISO workgroup that defines C
<whitequark> WG 21 is the one for C++
<bofh> Yeah, I know WG 21
<bofh> I didn't know there *was* still an active ISO working group for C, tbh.
<whitequark> there is C18
<whitequark> which is identical to C11 semantically but is "reworded to be more clear"
<whitequark> and the next version of C (I guess it's C2x) will define integers as 2's complement
<whitequark> as per internal committee vote that i have been informed about on twitter.
<whitequark> ????????
<bofh> *blank stare*
<whitequark> I Don't Know Either.
<B787_300> UmbralRaptor: well it looks like i get to go museum hopping on monday
<UmbralRaptor> Yay
<B787_300> and it looks like the SOTU wont be held on tuesday so we dont have to fight with all the traffic and issues that would cause
<egg|zzz|egg> bofh: I have a vague recollection of something in the GUM or the VIM or something like that saying something to the effect that you shouldn't write 600 g but 6 10^2 g if the standard uncertainty is > 1 g, but I can't find it, did I just hallucinate it at 4 in the morning earlier this week
<whitequark> egg|zzz|egg: i vaguely recall something like that from high school
<bofh> egg|zzz|egg: that's the level of bullshit that made me strongly hate sig figs
<egg|zzz|egg> whitequark: yeah, but high school can do dodgy things like expressing uncertainties with ± or using a coverage factor other than 1 without saying it, etc., so I'm wondering whether there's some standard source for that
<egg|zzz|egg> bofh: donot hate sigfig
<bofh> and yeah, I recall something like that from high school too
<egg|zzz|egg> bofh: alternatively, do you know how the notation 1729,420(69) extends to the case where the standard uncertainty goes to the left of the decimal mark
<bofh> absolutely no clue.
<egg|zzz|egg> can you cast "summon metrologist"
<UmbralRaptor> whitequark: I recall 600 having 1 sigfig, but 600. having 3.
<UmbralRaptor> Not sure how we were supposed to do 2.
<whitequark> oh
<B787_300> 2. is one sig fig
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<egg|zzz|egg> UmbralRaptor: okay that's *not* a thing in FR
<egg|zzz|egg> 600, does not parse
<B787_300> and yes 1729,420(69) says that the last two digits, in this case 69, are not significant but they they it is that soooooo
<UmbralRaptor> egg|zzz|egg: it could have just been my highschool ¯\_(ツ)_/¯
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<B787_300> but they think that it is those digits sooooo^
<B787_300> UmbralRaptor: well it was also my HS and i was down in GA
* UmbralRaptor stares at egg|zzz|egg's eggsample numbers
<egg|zzz|egg> <B787_300> and yes 1729,420(69) says that the last two digits, in this case 69, are not significant but they they it is that soooooo << nono, that's not what it means in the GUM
<UmbralRaptor> (It's a very nice taxicab)
<B787_300> in the GUM?
<egg|zzz|egg> it says that the measurement value is 1729,420 with an standard uncertainty of 0,00069
<B787_300> i mean egg|zzz|egg it is stillw 4eird to see , being used as a decimal point
<egg|zzz|egg> s/an s/a s/
<B787_300> s/4/w
<UmbralRaptor> hrm
* UmbralRaptor wonders if there's an ISO doc
<B787_300> egg|zzz|egg: what is the GUM?
<B787_300> ah
<egg|zzz|egg> whitequark: by the way, weird sun twitter silliness https://esper.irclog.whitequark.org/kspacademia/2019-01-21#1548036144-1548035982;
<egg|zzz|egg> bofh: okay, interesting! http://www.nucleide.org/DDEP_WG/Arrondis_NT04-13.pdf section II
<egg|zzz|egg> bofh: 123,0(11) Bq signifie (123,0 ± 1,1) Bq, 123(1) signifie (123 ± 1) Bq, so they use that notation even past the decimal mark
<egg|zzz|egg> bofh: oh gods there's pseudocode at the end
<egg|zzz|egg> bofh: I am reminded of round cat
<egg|zzz|egg> no that's not pseudocode, that's excel
<bofh> ROFL ROUND CAT
<bofh> https://photos.app.goo.gl/yS2bq8QDmQUNngFc9 finally getting around to uploading some of my Lyon pics
<egg|zzz|egg> bofh: though it seems the answer here is both are notations given by the GUM, but the second one is a rather less common notation
<egg|zzz|egg> (they generalize to 1729,420(69) and 1729,420(0,00069) respectively)
<egg|zzz|egg> wait no 1729,420(0,069)
* egg|zzz|egg too tired to metrology
<bofh> Like, I think it's perfectly reasonable (well other than you're using , both for thousands sep and a .)
<egg|zzz|egg> bofh: what? I never use , or . for thousands separation, what are you talking about
<bofh> Oh, so that's 1729.420(0.069)?
<egg|zzz|egg> yes
<egg|zzz|egg> le symbole du séparateur décimal pourra être le point sur la ligne ou la virgule sur la ligne
<egg|zzz|egg> Pour faciliter la lecture, les nombres peuvent être partagés en tranches de trois chiffres ; ces tranches ne sont jamais séparées par des points, ni par des virgules
* egg|zzz|egg stabs those who use , or . as a grouping mark with a ;
<UmbralRaptor> 1;729;420.69?
<egg|zzz|egg> that's silly, but at least not misleading
<egg|zzz|egg> bofh: otoh I guess if the uncertainty is, say, > 100, or if I use the conventions of that radiological paper, > 50, i have to use scientific notation
<egg|zzz|egg> otherwise I don't have enough digits to reach the decimal mark
<UmbralRaptor> 2019;01;25T21;28;35
<UmbralRaptor> <_<
<egg|zzz|egg> bofh: which i guess is reasonable, by that point we're either dealing with large numbers or stupidly uncertain ones anyway
<egg|zzz|egg> zzz
<UmbralRaptor> ζζζ
<B787_300> oh no UmbralRaptor has gone greek
<UmbralRaptor> Having the Greek alphabet on standby is surprisingly useful.
<bofh> rofl
<B787_300> good news everyone NASA is back at work
<UmbralRaptor> At least for 3 weeks.
<B787_300> UmbralRaptor: oh i know it
<B787_300> which isnt long enough for the SpX DM1 launch
<B787_300> and i would bet that come Oct 1 the full govt shuts down too
<B787_300> which will suck
<B787_300> so i am putting more money than my usual into a savings acct to hopefully not cause me financial issues come october if another long shutdown happens
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<egg|cell|egg> What happens in October?
<UmbralRaptor> Fiscal new year
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<egg|zzz|egg> UmbralRaptor: hm on a молния orbit the Лидов–古在 timescale is 350 years? Ꙩ_ꙩ
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* egg|zzz|egg skims through the the CODATA 2014 values
<egg|zzz|egg> "Triton mass"
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<egg|zzz|egg> bofh: are there names for the various normalizations of the DFT
<UmbralRaptor> egg|zzz|egg: Did you find a newt that's 1/3 larger than Pluto?
<egg|zzz|egg> UmbralRaptor: or a ³H nucleus
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<_whitenotifier-1656> [Principia] pleroy synchronize pull request #2065: Proof of the damping condition - https://git.io/fh409
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<_whitenotifier-1656> [Principia] pleroy synchronize pull request #2065: Proof of the damping condition - https://git.io/fh409
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<_whitenotifier-1656> [Principia] eggrobin labeled pull request #2065: Proof of the damping condition - https://git.io/fh409
<egg|zzz|egg> bofh: is that Atlas tweeting https://twitter.com/stephentyrone/status/1089176810796081152
<kmath> <stephentyrone> “Hold each mouse pup in your hand, and ask if it sparks joy.”
<egg|zzz|egg> the JCGM member organizations (BIPM, IEC, IFCC, ILAC, ISO, IUPAC, IUPAP and OIML)
<egg|zzz|egg> tfh no qboid !acr
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<bofh> 15:17:25 <@egg|zzz|egg> bofh: are there names for the various normalizations of the DFT
<bofh> not that I know of, basically what happens is everyone just calls their preferred normalization "the" DFT and it's kind of a trainwreck.
<bofh> personally I work with the unnormalized FFT (i.e. without the factor of 1/N anywhere) and normalize it as needed.
<egg|zzz|egg> hm
<egg|zzz|egg> bofh: meow
<egg|zzz|egg> bofh: this file is starting well https://hastebin.com/atajihijit.cpp
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<egg|zzz|egg> bofh: meoww
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<bofh> egg|zzz|egg: meow
<egg|zzz|egg> bofh: you have blurry swan photos
<bofh> egg|zzz|egg: it was moving fast and I was using a shutter speed of 1/1, ofc it was going to be blurry.
<egg|zzz|egg> 1/1?
<egg|zzz|egg> ah, 1 s eggsposure time?
<bofh> yeah
<bofh> I think it even says so in the infobox
<bofh> also I just now noticed the date on the camera is off by 2 days.
<egg|zzz|egg> bofh: yeah it says 1 s
<egg|zzz|egg> also it says 26.079 mm
<egg|zzz|egg> even though my UI is in fr
<bofh> also I like how that mall infobox has my hat lämps reflecting in it.
<bofh> the one that is currently displaying a Chromium(?) crash screen.
<egg|zzz|egg> yeah looks like chrome
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<egg|zzz|egg> UmbralRaptop: https://en.wikipedia.org/wiki/Troy_VII Troy VIIb3
<egg|zzz|egg> UmbralRaptop: https://en.wikipedia.org/wiki/Mycenaean_pottery#LH_IIIA2_(c._1390/1370_%E2%80%93_1320/1300_BC) pottery LH IIIB2
<UmbralRaptop> Rosette form?
<UmbralRaptop> SnoopJeDi: uh, it's a voregry
<UmbralRaptop> hrm. That needs conteggst
<_whitenotifier-1656> [Principia] pleroy closed pull request #2065: Proof of the damping condition - https://git.io/fh409
<_whitenotifier-1656> [Principia] pleroy pushed 12 commits to master [+0/-0/±24] https://git.io/fh6qi
<_whitenotifier-1656> [Principia] pleroy 8ad528e - Expanded formula for the derivative.
<_whitenotifier-1656> [Principia] pleroy 0f19491 - Solution of the quadratic equation.
<_whitenotifier-1656> [Principia] pleroy a777af8 - Full proof of the lemma.
<_whitenotifier-1656> [Principia] ... and 9 more commits.
<_whitenotifier-1656> [Principia] pleroy opened pull request #2068: Proof of the damping condition close to s0 - https://git.io/fh6me
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<egg|zzz|egg> !choose sleep|principia
<egg|zzz|egg> ;choose sleep|principia
<kmath> egg|zzz|egg: sleep
<egg|zzz|egg> hm
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* UmbralRaptop eyes kmath suspiciously
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