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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 18:24:20 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 18:24:20 +0000 |
commit | 483eb2f56657e8e7f419ab1a4fab8dce9ade8609 (patch) | |
tree | e5d88d25d870d5dedacb6bbdbe2a966086a0a5cf /src/boost/libs/math/example/autodiff_mixed_partials.cpp | |
parent | Initial commit. (diff) | |
download | ceph-upstream.tar.xz ceph-upstream.zip |
Adding upstream version 14.2.21.upstream/14.2.21upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/boost/libs/math/example/autodiff_mixed_partials.cpp')
-rw-r--r-- | src/boost/libs/math/example/autodiff_mixed_partials.cpp | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/src/boost/libs/math/example/autodiff_mixed_partials.cpp b/src/boost/libs/math/example/autodiff_mixed_partials.cpp new file mode 100644 index 00000000..551429e0 --- /dev/null +++ b/src/boost/libs/math/example/autodiff_mixed_partials.cpp @@ -0,0 +1,293 @@ +// Copyright Matthew Pulver 2018 - 2019. +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE_1_0.txt or copy at +// https://www.boost.org/LICENSE_1_0.txt) + +#include <boost/lexical_cast.hpp> +#include <boost/math/differentiation/autodiff.hpp> +#include <boost/mp11/tuple.hpp> +#include <boost/mp11/utility.hpp> +#include <boost/multiprecision/cpp_bin_float.hpp> +#include <iostream> + +using namespace boost::math::differentiation; + +struct f { + template <typename W, typename X, typename Y, typename Z> + promote<W, X, Y, Z> operator()(W const& w, X const& x, Y const& y, Z const& z) const { + return exp(w * sin(x * log(y) / z) + sqrt(w * z / (x * y))) + w * w / tan(z); + } +}; + +// Derivatives calculated from symbolic differentiation by Mathematica for comparison. Script: +// mixed_partials.nb +static constexpr std::array<char const*, 240> answers{ + {"19878.40628980434922342465374997798674242532797789489", + "20731.74838274939517275508122761443159515217855975002", + "14667.60767623939014840117674691707821648144188283774", + "1840.559936449813118734351750381849294157477519107602", + "-9219.318005237072129605008516120710807803827373819700", + "-7272.300634012811783845589472196110804386170683300081", + "-2135.296370062283924160196772166043360841114107521292", + "3095.081027251846799545897828297310835169325417217168", + "4249.026762908615627428402369471953790564918480025345", + "2063.989061062734416582172072883742097425754355167541", + "-885.5284114876496084068555333811894392182458751895290", + "-1962.133420441743158021558423645064067562765178375508", + "-1846.899830787084518564013512948598850243350915531775", + "-160.9590127603295755195950112199107484483554942817846", + "1091.039412341633994110997652976585409621806446647794", + "452.4395574345229946707651998323417632800605985181691", + "666.4013922727704990031159406121675703174518834914461", + "-415.6464114333629107803309520898363153301435468382605", + "-625.1464179039986361267627631122900331946746137220517", + "369.9491669772617110087494756677334192842413470837587", + "-24330.89613849389343130420303653062335840497802221681", + "-18810.41605175626752065686192937776868736029049989926", + "-4890.406122702359099863022925593448420259414896197252", + "8833.005054768976417065486877649473665597894570245307", + "8484.350739681613747819854384228795938450532463850094", + "3097.204151240398893507362023543393154680147349049848", + "-3255.045136783440612110181337652522080890693968833148", + "-4342.778553332193097878812792875447018366988006584840", + "-2407.987237906523486012534085031032446996713414362131", + "861.1173916470300084261504495377425043024739914571554", + "2436.743725763308619092960749816106318692933687303014", + "-19.24649610733827783846392798978023489104363382129689", + "187.7855148870511714395275130898958731897480766620821", + "-1259.466063335212195169531010871023748854744563232277", + "-709.6860523972158261343923419671629587637051060458295", + "1423.000558608604536932163648918899935569543711292466", + "484.9208133389233959103861107714757012185008046446372", + "763.9746885074453180462508029718247316712990115789154", + "-327.4162918228055568224139277603073169658358026440432", + "-1122.337707248494521123614369562896901904418640152220", + "23973.06007192346989337502250398494874845408708506720", + "8840.543151778796869949670401421984604862699128880003", + "-9082.571033221549378277312292526023838132689941236879", + "-12270.27378289258717737657881957466807305650429436397", + "-4320.434071420599854743576892819691675331049612545664", + "3281.351967707280898543984556670710235259118405463698", + "5880.336263083418767219493592767818708317492833223933", + "-1288.482785219706549809211085113790275109642879331959", + "-803.9713537626580526627976840414468844364935388365037", + "-2986.387245331698390346145949708414455858834967096376", + "-586.7316859822658306283656047992829723003491823675739", + "3929.073189280739356198769778905960586080418779863615", + "1453.728280983826630077825553258703050898056317382483", + "1037.878071685953829685046234106860743366780050925514", + "-1482.745805277401336553926171580259185140208053329753", + "-1877.134792933828810602377451370316364621357891989679", + "-931.7138710369298207131581126980851620513905805624544", + "254.6565590420322632851077818917210811815919344882311", + "1391.248064745611663849820246430123214796614030838600", + "-431.4820563154137955051720207563800896297257103310465", + "16975.34005365179555009050533000516107937041784876054", + "19662.60356303341709846238790020024593550984564081068", + "15765.85130704020004301064240357947656083104783442825", + "3972.155036195937013764185795634749937308876197976202", + "-8681.748539789720512499473840242996096730194203989543", + "-7703.183042460387656743498394861780784700076575106134", + "-3049.708696569518774040135942468704911634779352213044", + "2971.469685992270876159892302788930292108129670398058", + "4370.196499857550025657084783894747734031876677385611", + "2524.632473357435670756946837415389227139966527203701", + "-656.6080000236679071742450437463693211275208125750923", + "-2423.452917325258132591368397957959217829861665178601", + "-2074.987664204263204162199830716851483704870169031179", + "-381.2253794988132984501358802316138392247470857452486", + "1219.507245791997351017860252538035146744682380716428", + "805.3802239840836877339667281819652171888443003165988", + "838.4004190058912380470543219448821914235443115661655", + "-390.6125197108983831575656956558201636111305409512701", + "-828.2085489298235758253219930356006757081473789845849", + "293.8999854454994790079171865082094494146506490533363", + "-22965.85985843951977785883587223006628792405076928067", + "-20026.69101529929621743747554537576887048069629325374", + "-7316.092745063355996548975300169565482331369744607021", + "8632.466133972614659252310985982644793465043032940318", + "8987.046882870452266200748127338744248816756004290490", + "4199.925399536137541108783465785304128965582292174062", + "-2958.429850896062893179851696175634522187021390095560", + "-5665.563891218624062243686482808197054863235184904433", + "-2945.404552250341615883104643651287431663294281737652", + "555.6566272478262524735403145861484390537770707372992", + "2936.796403550079139218970638242013974322758744804216", + "651.5191650747110008135060635556227666232180743487328", + "444.7629427486155148584918602702161457622049333694568", + "-1390.989671799095801316658971275073184600067187023729", + "-1142.861468946763860859271224968631944511098747155437", + "1541.978723117340843491920690654997335632919116206279", + "455.7146063293814470171599782651235242129856311098151", + "998.7943503940357037260061331795191352937661538946216", + "-204.8485581981121295383497187536442450324011940647949", + "-1560.354115460478786113711476250386112014306509906244", + "25278.29450605247223516529112562423587288781657290275", + "11873.22337179046469888005044109378787446671408425048", + "-8242.187303368878103323785658604027555126374435611949", + "-15939.98056417465751946455567789306872745912255628512", + "-5648.833539698031486810309720694416837861242341227280", + "2751.513926122717118525029734574022921057261239749143", + "7349.432002479077129245930487320138527887196396579062", + "194.9972545980371127390142753318206783334452047502143", + "-402.8156857682688265622049800462325595907987257153782", + "-3518.871908683063371167722463713374376552181380727802", + "-1494.304793474682619087166400375396721307777439607909", + "4640.927509426080087451995953783429589632369803588940", + "1585.757705203227141964561144798400703219894640413562", + "1565.169992404407137888592924342582799362959736185298", + "-1513.259809733540018859089666188672238777297615451800", + "-2974.437872674680092826212901753475972242208819679978", + "-1203.236292653823441598437153564865951527142648802876", + "72.52425949879153384040698301599842998884036742649047", + "1871.625274253419949517250818647194858608124560073483", + "-2.489984337379681666361341362948045621969765070197429", + "14462.74423518633102580192225823524237502860825596609", + "18367.74740916432711689913219912502810575714860430297", + "16565.76324499673961400925630526921000337443450249297", + "6054.315252651102952034254100792777051580892954459740", + "-8084.981271982030146065497115893934803061545998433631", + "-7988.314359128201297240919364015959817416101519999194", + "-3989.319346941492698525859335371231602272119870228687", + "2616.721186534649016680934493970036169897788778926434", + "4420.859270970486562095630193355634655337290952862363", + "2973.033519764547909146474824627687039969488363657908", + "-324.1453016982713707989332262410969595194473127209825", + "-2843.242039958969221918101261762794653424879358390111", + "-2281.461806143289517702658392470195144560150025832652", + "-642.9353229582055924928927665183236308235598082837497", + "1299.287274176955358490409470855361289523321919337117", + "1238.597083372069762230817383681570828675426312803376", + "1021.334042770848165110529668635291528449691525937968", + "-329.0529345069271079573348500899329811170455711610811", + "-1046.254301544052075124857362060924818517694048905299", + "134.7343039554480655186788228552325941588620079791654", + "-21431.41643507661192392650726158493697457993678274754", + "-20856.88281479015784660571401663659059349708627445067", + "-9829.261970591930907585958999196966814861251125275804", + "7806.858647077811827981774785577363365546600234846335", + "9319.700085649568180114405924685286453652118439999060", + "5319.898768025758256383579171601100187435481641933401", + "-2387.954826466841736373447020403170264502066930376059", + "-6958.298525165359760665355886221309296550746152109847", + "-3468.539106391972560670887295398968213297736424267559", + "130.4167253342709401698825285623058661085645012029873", + "3371.139930235175987370940343096776588915600470241960", + "1569.232678004908105313880673484968847566948896728142", + "750.0912101179065245750415609380442359608197763310413", + "-1462.257209626597452197736652121394535208578921869658", + "-1661.577809630240615684355192771059515041884351493459", + "1509.628528603869133250456671040505284128185908768108", + "383.8950902580816259502239917715884779698864996879279", + "1248.051096343638013308778159911906703363730187986273", + "17.18569564265260274901760034571610990094333217519021", + 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"-4309.285350629108413525304135326225818270616857298235", + "-1488.050869922417817689426519211523527088509094291312", + "-228.0584943070343720919835603886532454450555855354340", + "2373.398940425709177876367020236623713151456855728138", + "773.8481328103928058186643458500631723389600248582833", + "12294.40387737855548614823173849184004455244840062464", + "16977.34966571858301862913845572077593071467784570724", + "17057.17475622503175013658695220988017704387344177727", + "8121.189758511830935868344768490586007624092305459885", + "-7458.443541406284389918808653948439156033975014107187", + "-8134.131160882738058651976911725365291142418949378248", + "-4912.881158613784419581465435995807691111897279859302", + "2030.653136098933717888434825960516061206391833398177", + "4407.490527709412730881592594976776779312299897714205", + "3392.434568825892752350943548729559313328141534290860", + "104.0372355841506198680609232049783930050635078746762", + "-3180.817620484463214391157460812371170723810181051096", + "-2460.523987075069437321629265332968914260047631079537", + "-938.2209314069133432825590545267820890922150850657831", + "1315.246905571876456706320919211807375254975062430487", + "1735.862392405992188189147617586418269768276241147998", + "1209.759657223166954850207025399731503326968841680649", + "-227.3320054566642297128407910803774238020746116287390", + "-1266.126209991929259396966729664100401813091860201682", + "-123.0794572338149156803989321165094334755661021559442", + "-19806.90794333834685506732819834090525250045748665845", + "-21314.81635440575229337844631555492486744407550254908", + "-12317.58384430130805020250005527399703840208659666608", + "6349.418659888281474363154227419204673663621492760982", + "9489.819687696527735093973063679592839666155440941289", + "6409.538948456309994399374417972222747225748405617373", + "-1550.281799013125267606263057621300789555474258987989", + "-8109.711199785217512061886243157800006692908759687186", + "-3957.840330296874877742767473517819198882831790006004", + "-404.0796555836667858753163727999380679499192203780272", + "3693.614351301181980145006883746936633676934626580499", + "2716.146658322790064799415509615557123789406209068981", + "1094.591086641398900496318896947912437274250932576747", + "-1456.269645549946420883827817869876763706452982413420", + "-2244.380608735636962338392373719455877272151458411079", + "1268.593891556261871090883000459505759446497182073132", + "265.2206730327749346649809229271069944357537135668622", + "1496.091578778639488439197917198148587432113387871024", + "354.6137351047722781932932090799444060236757625488818", + "-2508.477110048684129181005769771219369377836598443263", + "26517.86140875157324686379805134248778305979287686214", + "17922.98387741915144079932445041215068937644694653527", + "-4328.259142127668040873054918170572859673703425721293", + "-22704.70245940080949074466622805971940616027152354999", + "-8268.613747173738971390434576274225941735552759965376", + "740.4056074392611464740778308961471299437619012164253", + "9848.900182836035080973766381422758538530595451048714", + "5213.598341476210337710365441072904970861063876340963", + "801.2462923723508233330997243930793458484750729415321", + "-4241.870133920767845856621968904769727964770527614244", + "-4092.241355868550570635569815488217469506874233892269", + "5074.435909206083943809967780457349942315503368249477", + "1607.765329254820915989772546102530187884674235100928", + "2861.155651116567526208762405651011317435252198548496", + "-918.9310546317296090214320737728927500362088478158839", + "-5803.211323646092019259074499814222806376618363553826", + "-1767.541897994477314401145980308432268207111761980100", + "-663.0646207520075726320417301262932382663072876188661", + "2837.903194613938414496183429129769829434890424213252", + "1976.319600747797717779881875290418720908121189218755"}}; + +int main() { + using float50 = boost::multiprecision::cpp_bin_float_50; + constexpr std::size_t Nw = 3; // Max order of derivative to calculate for w + constexpr std::size_t Nx = 2; // Max order of derivative to calculate for x + constexpr std::size_t Ny = 4; // Max order of derivative to calculate for y + constexpr std::size_t Nz = 3; // Max order of derivative to calculate for z + auto const variables = make_ftuple<float50, Nw, Nx, Ny, Nz>(11, 12, 13, 14); + auto const v = boost::mp11::tuple_apply(f{}, variables); + std::size_t ia = 0; + double max_relative_error = 0; + for (std::size_t iw = 0; iw <= Nw; ++iw) + for (std::size_t ix = 0; ix <= Nx; ++ix) + for (std::size_t iy = 0; iy <= Ny; ++iy) + for (std::size_t iz = 0; iz <= Nz; ++iz) { + float50 const value = v.derivative(iw, ix, iy, iz); + float50 const answer = boost::lexical_cast<float50>(answers[ia++]); + double const error = static_cast<double>(fabs(value / answer - 1)); + max_relative_error = (std::max)(error, max_relative_error); + } + std::cout << "max_relative_error = " << std::setprecision(3) << max_relative_error << " out of " << ia + << " calculated values." << std::endl; + return 0; +} +/* +Output: +max_relative_error = 6.82e-13 out of 240 calculated values. (for double) +max_relative_error = 3.36e-47 out of 240 calculated values. (for cpp_bin_float_50) +**/ |