| --- Log opened Sun Dec 06 00:00:17 2009 |
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| 05:43 | | * dmlandrum is off to bed. Night, all. |
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| 07:53 | | * Thaqui snickers sadly. |
| 07:53 | < Thaqui> | Someone asked why "while(TempInfo2 !> 0 && TempInfo !< 9999)" would give errors in compiling. |
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| 09:35 | | You're now known as TheWatcher |
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| 09:58 | < Tarinaky> | Wait... This is C/C++ right? !> isn't an operator... |
| 09:58 | < McMartin> | Hence the "sadly" |
| 09:59 | < Tarinaky> | :/ I wan't sure if it was some bizarre language I didn't know. |
| 09:59 | < Tarinaky> | *wasn't |
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| 11:47 | | * Tarinaky is very. Very confused :/ |
| 11:47 | < Tarinaky> | I think I'm missing something very simple here :/ |
| 11:49 | < MyCatSchemes> | How would you define !> and !<? |
| 11:50 | < Tarinaky> | '!>' would be '<=' surely. |
| 11:51 | <~Reiver> Got it in one. |
| 11:51 | < Tarinaky> | That's not what I'm confused about. |
| 11:52 | < Tarinaky> | Would I be better asking in #maths for help implementing an iterative method for finding a numerical solution of a function? |
| 11:52 | < Tarinaky> | *for the root of a function |
| 11:53 | <~Reiver> No. |
| 11:54 | <@AnnoDomini> | Equipment |
| 11:54 | <@AnnoDomini> | Location |
| 11:54 | <@AnnoDomini> | Comments |
| 11:54 | <@AnnoDomini> | Damn it. |
| 11:54 | < Tarinaky> | Lemme pastebin this. :/ |
| 11:54 | <@AnnoDomini> | Stupid terminal. |
| 11:55 | < Tarinaky> | http://tarinaky.pastebin.com/m47a8b337 << What's wrong with this? |
| 11:56 | | * Tarinaky is currently trying to get it to find the positive root of x^2-4. It -should- be guessing 5, then 2.5 then 3.75 etc... |
| 11:57 | < Tarinaky> | However it's currently guessing 5, 7.5, 8.75... |
| 11:57 | < Tarinaky> | And I can't see why :/ |
| 11:57 | <@AnnoDomini> | Try >0? |
| 11:58 | < Tarinaky> | I would. But that would leave me with the problem that I don't understand wtf is going on :/ |
| 11:58 | < Tarinaky> | >0 does work... but I don't understand why. |
| 11:59 | < Tarinaky> | >.< |
| 12:02 | < Tarinaky> | Oh! |
| 12:02 | < Tarinaky> | I understand now. |
| 12:02 | < Tarinaky> | Never mind. I'm an idiot. |
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| 13:03 | < Tarinaky> | Gah. I don't know if I'm making a programming error or a maths one :/ |
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| 14:53 | | * Tarinaky head-desks. No matter how hard I try why can I not get this damn thing to work :/ |
| 14:55 | | * AnnoDomini unhelpfully hums a certain Linkin Park song. |
| 14:56 | < Tarinaky> | I can think of several. |
| 14:59 | <@AnnoDomini> | Yes. Now you're imagining all those superimposed on one another. Very quantum. |
| 15:06 | < Tarinaky> | Crawling in my like to think you're never wrong. |
| 15:08 | < Tarinaky> | Crawling in my song. My mansion never clean. Cash is how I know. >.> <.< >.> |
| 15:09 | < Tarinaky> | Or something like that. I don't have time to be witty :/ |
| 15:09 | <@AnnoDomini> | That's horrible. |
| 15:09 | < Tarinaky> | Sorry. |
| 15:09 | <@AnnoDomini> | In more ways than one. |
| 15:10 | < Tarinaky> | I can only think of like... one of their songs. |
| 15:10 | < Tarinaky> | I had to look up the lyrics to points of authority to superimpose it. |
| 15:10 | < Tarinaky> | Couldn't remember it :/ |
| 15:10 | <@AnnoDomini> | You're being distracted. Get back to work, drone! |
| 15:11 | < Tarinaky> | I don't know what to do though :/ |
| 15:11 | < Tarinaky> | I'm spent. |
| 15:11 | < Tarinaky> | I have no idea where my error's coming from :/ It's converging but not where I expect it to. |
| 15:13 | < Tarinaky> | The only thing I can think of as being wrong shouldn't even effect the value that much (from examining it graphically). |
| 15:16 | < Tarinaky> | Numerically everything seems to work... Except it's giving me a bandgap 5 times wrong :/ |
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| 15:33 | < Tarinaky> | The only thing I can think of is that it's impossible to do because of rounding errors in the trigonometric functions. |
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| 15:33 | < Tarinaky> | In which case it's a very bastardly problem to set. |
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| 15:56 | < Tarinaky> | I hate floats/doubles :/ |
| 16:00 | < gnolam> | So go bignum then. |
| 16:01 | < Tarinaky> | Bignum? |
| 16:02 | < gnolam> | Arbitrary-precision arithmetic. |
| 16:04 | < Tarinaky> | I don't understand. Sorry. |
| 16:05 | <@TheWatcher> | Tarinaky: if you're using c/c++, try libgmp |
| 16:06 | < Tarinaky> | I'll look into it some time. I'm pretty certain this problem should be solveable without it. |
| 16:06 | < Tarinaky> | I just can't figure out how >.> |
| 16:09 | < AbuDhabi> | Use Mathcad. |
| 16:10 | < gnolam> | Bignum/arbitrary-precision arithmetic: instead of using just the native representation sizes, use however much memory you want to represent each number. |
| 16:10 | < gnolam> | It's horribly slow (since you're doing everything in software instead of hardware), but if you really really need precision... |
| 16:16 | < Tarinaky> | I don't know if it's precision I need. Other people managed to get this to work using just what's built-in. |
| 16:16 | < Tarinaky> | So I dunno what I'm doing wrong :/ |
| 16:16 | < Tarinaky> | But there's a factor of 3.88 error coming from somewhere. |
| 16:17 | < AbuDhabi> | Start again. From scratch. |
| 16:17 | < Tarinaky> | No way. I spent weeks working on this! |
| 16:17 | < Tarinaky> | All 130 lines of code >.> |
| 16:17 | < AbuDhabi> | That's not very much. |
| 16:18 | < Tarinaky> | It wasn't so much a coding problem as a physics problem. |
| 16:18 | < Tarinaky> | It took me three 3-hour sessions before I touched a text editor :/ |
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| 23:31 | < gnolam> | Blargh. |
| 23:31 | < gnolam> | Give me some proper cyberpunk tech, already. |
| 23:32 | < gnolam> | I want to tell my computer to compile me a precis from these papers with just the data I'm after. |
| 23:53 | < dmlandrum> | That'd make writing my last physics lab paper a lot easier. |
| 23:55 | < McMartin> | I'm pretty sure you'd have to either have a strong AI to do that, or a semistructured markup format for publications that everyone actually used. |
| 23:57 | < simon`> | higher neural bandwidth! |
| 23:57 | < simon`> | that might not scale |
| --- Log closed Mon Dec 07 00:00:18 2009 |