assertEq(Math.cosh(1000), Infinity); assertEq(Math.cosh(Number.MAX_VALUE), Infinity); assertNear(Math.cosh(1e-30), 1); assertNear(Math.cosh(1e-10), 1); var cosh_data = [ [0.0016914556651292944, 1.0000014305114746], [0.001953124689559275, 1.0000019073486328], [0.003782208044661295, 1.000007152557373], [0.005258943946801101, 1.000013828277588], [0.005859366618129203, 1.0000171661376953], [0.010961831992188852, 1.0000600814819336], [0.015285472131830425, 1.0001168251037598], [0.017249319093529877, 1.0001487731933594], [0.028218171738655373, 1.0003981590270996], [0.03573281468231457, 1.000638484954834], [0.046287402472878776, 1.0010714530944824], [0.07771996527168971, 1.0030217170715332], [0.0998975930860278, 1.0049939155578613], [0.13615938768032465, 1.0092840194702148], [0.21942279004958354, 1.024169921875], [0.3511165938166055, 1.0622773170471191], [0.48975026711288183, 1.1223440170288086], [0.692556883708491, 1.2495574951171875], [0.954530572221414, 1.4912219047546387], [1.307581416910453, 1.983847141265869], [1.4035188779741334, 2.1576128005981445], [1.5250070845427517, 2.406397819519043], [1.8905372013072799, 3.386958122253418], [2.1735673399948254, 4.451677322387695], [2.625091127868242, 6.939132690429686], [2.737434918695162, 7.756023406982421], [2.8740317167801948, 8.88236999511719], [2.97998639328949, 9.869171142578123], [3.516549380542481, 16.848876953125], [3.51867003468025, 16.884582519531254], [3.593185165198829, 18.18859100341797], [3.6273672142963385, 18.82012176513672], [3.646553244410946, 19.184181213378906], [3.872413451393967, 24.03952026367187], [3.972085568933329, 26.556991577148434], [4.022209178119238, 27.921104431152337], [4.168428891496629, 32.31466674804686], [4.240546229861005, 34.730087280273445], [4.290698214968891, 36.51556396484376], [4.352722738491574, 38.851287841796875], [4.594386162629449, 49.46875], [4.598500387004538, 49.67265319824219], [4.7152173401856095, 55.821014404296896], [4.73822104001982, 57.119781494140604], [4.793733825338029, 60.37983703613279], [4.8435923769530165, 63.46618652343747], [4.849190310904695, 63.82241821289062], [4.85767897228448, 64.36642456054685], [4.880061548144127, 65.82318115234375], [4.921430721025434, 68.60302734374997], [4.94406835208057, 70.17358398437497], [4.967000841791218, 71.80126953124997], [5.016014824864732, 75.40786743164065], [5.017205657609766, 75.49771118164062], [5.0506448716550825, 78.06475830078126], [5.0707363201405276, 79.64892578125], [5.073517411135063, 79.87072753906253], [5.101574796209937, 82.14324951171874], [5.152357710985635, 86.4221496582031], [5.167705692500117, 87.75869750976562], [5.2390637098028074, 94.24942016601562], [5.247023676519904, 95.00259399414062], [5.258134994273664, 96.06402587890626], [5.289261389093961, 99.10101318359374], [5.345425863147171, 104.82595825195315], [5.3555664787245885, 105.89431762695308], [5.363617180711895, 106.750244140625], [5.388152468690488, 109.40167236328122], [5.405320225963013, 111.2959899902344], [5.417698597745429, 112.68215942382815], [5.445406415908933, 115.8478698730469], [5.501396249028249, 122.51895141601562], [5.531718947357248, 126.29083251953128], [5.544277233951787, 127.88677978515626], [5.547444176085567, 128.29241943359372], [5.556786759298988, 129.49658203125006], [5.625710723366437, 138.7365112304687], [5.628934733085022, 139.18450927734378], [5.634566685055491, 139.97058105468747], [5.660401141376928, 143.63366699218747], [5.698541939965668, 149.21765136718753], [5.7078698961812995, 150.6160278320313], [5.714741890601693, 151.6546020507813], [5.735111323217677, 154.77532958984378], [5.761781191641161, 158.95861816406253], [5.763503378028959, 159.23260498046878], [5.810483079631769, 166.89166259765622], [5.824362807770767, 169.22418212890625], [5.833939098607025, 170.85247802734372], [5.861586030831371, 175.64184570312503], [5.866335876872544, 176.47808837890625], [5.869449614294116, 177.02844238281247], [5.879497954012966, 178.81622314453122], [5.893213844044451, 181.28570556640625], [5.944588630523773, 190.84246826171866], [5.947493525920713, 191.39764404296875], [5.962341215900494, 194.26062011718753], [5.9656082276276, 194.89630126953122], [5.9749284849312865, 196.7212524414062], [5.975165500176202, 196.76788330078128], [5.981706804024238, 198.05920410156241], [5.991310884439669, 199.9705200195312], [6.004868209578554, 202.70001220703122], [6.0159406892865155, 204.95684814453116], [6.025476453825986, 206.92059326171866], [6.047172064627678, 211.45886230468741], [6.0479418642231595, 211.62170410156256], [6.050479329955437, 212.1593627929687], [6.086466833749719, 219.93341064453125], [6.101870903204913, 223.3474731445312], [6.1249427443985525, 228.56036376953128], [6.129204755426344, 229.53656005859375], [6.136241935513706, 231.1575317382813], [6.153688953514383, 235.22589111328134], [6.1619244798633215, 237.17108154296884], [6.165012268502458, 237.90454101562506], [6.187036941752032, 243.202392578125], [6.191527178125454, 244.29687500000003], [6.196001570568187, 245.3923950195312], [6.197677082130341, 245.80389404296875], [6.2133379061260285, 249.68365478515622], [6.223871642756905, 252.3276367187501], [6.228398760115369, 253.47253417968756], [6.269692237869835, 264.1583251953126], [6.276143287577458, 265.8679199218749], [6.305884283737176, 273.89379882812494], [6.306492908028797, 274.0605468750001], [6.3065018163217115, 274.06298828125006], [6.31104892482331, 275.3120117187501], [6.3322712125431915, 281.2171630859374], [6.343324976847916, 284.34289550781244], [6.345081883725142, 284.84289550781256], [6.353683609448096, 287.30358886718756], [6.366114643735997, 290.8973388671876], [6.373476431987165, 293.0467529296875], [6.3734826803404045, 293.04858398437494], [6.3862671775996915, 296.819091796875], [6.389086936901673, 297.6572265625], [6.424562459508495, 308.4062500000001], [6.4506171773701535, 316.5472412109376], [6.462221144761522, 320.24182128906256], [6.468740575092418, 322.33642578125], [6.472375224718483, 323.5101318359374], [6.485834999462654, 327.8939208984375], [6.486412623146554, 328.08337402343744], [6.486812521370483, 328.214599609375], [6.498698952535687, 332.1391601562501], [6.521175044233963, 339.6888427734376], [6.522595306993373, 340.171630859375], [6.522766822935215, 340.2299804687499], [6.52502285413445, 340.99841308593744], [6.5445411825986985, 347.7194824218749], [6.5451209675856825, 347.9211425781249], [6.55061885367159, 349.8392333984375], [6.560126626713879, 353.1812744140626], [6.560510895819139, 353.31701660156244], [6.565186990039135, 354.97302246093756], [6.567067660815945, 355.64123535156233], [6.588081320423386, 363.19360351562517], [6.5896131163651415, 363.7503662109376], [6.597598047275183, 366.66650390624983], [6.608222493065004, 370.5828857421874], [6.611563301604297, 371.822998046875], [6.622421213257873, 375.88220214843756], [6.625684248051368, 377.11071777343744], [6.626950731244344, 377.58862304687483], [6.630267034079059, 378.8428955078124], [6.630977920761718, 379.11230468749994], [6.636217452968849, 381.10388183593756], [6.638857149899159, 382.1112060546874], [6.641161660644278, 382.9927978515625], [6.652047018118426, 387.1845703124999], [6.658445560711748, 389.66992187499994], [6.658790721334144, 389.8044433593749], [6.675345858154136, 396.3114013671875], [6.677094789236718, 397.00512695312494], [6.6775691166680895, 397.1934814453124], [6.679106750673113, 397.80468749999994], [6.681712590609845, 398.84265136718744], [6.682523938576487, 399.16638183593744], [6.68274532345516, 399.2547607421874], [6.685459416477178, 400.3398437499999], [6.694456277839498, 403.9578857421875], [6.6952522228540765, 404.27954101562517], [6.6971746771142415, 405.05749511718744], [6.702764738337774, 407.328125], [6.7033022311799595, 407.54711914062506], [6.710763953621196, 410.59948730468756], [6.711256159037373, 410.8016357421876], [6.712054288828399, 411.12963867187494], [6.713939407502346, 411.9053955078124], [6.722828986708716, 415.5833740234374], [6.727835453862132, 417.66918945312506], [6.734632628835641, 420.51782226562506], [6.743787740494532, 424.38537597656233], [6.744565219553757, 424.71545410156244], [6.7715720212680655, 436.3419189453125], [6.776510146304201, 438.50195312500017], [6.778412462065226, 439.33691406250017], [6.79247934060035, 445.5606689453126], [6.809016260337229, 452.9901123046875], [6.810747231716348, 453.7749023437499], [6.817335895109251, 456.7745361328125], [6.819910421197311, 457.9520263671875], [6.821497844004013, 458.6795654296874], [6.8254946428721475, 460.51647949218767], [6.828433164406687, 461.87170410156256], [6.834543470287694, 464.70251464843756], [6.839609377592375, 467.06262207031267], [6.839627933844213, 467.0712890625001], [6.846084943645239, 470.09692382812494], [6.856799276049143, 475.16076660156233], [6.861822721577315, 477.5537109374998], [6.864066049482581, 478.62622070312517], [6.864420497333681, 478.79589843750017], [6.866278653973069, 479.68640136718733], [6.866487814627139, 479.7867431640625], [6.8667493311188395, 479.9122314453126], [6.872084270243208, 482.4793701171875], [6.872164723177875, 482.5181884765627], [6.874982560453874, 483.87976074218767], [6.876191234145179, 484.46496582031233], [6.877966548833207, 485.3258056640624], [6.888721726428236, 490.57373046875006], [6.89515989558997, 493.74230957031244], [6.896232568812718, 494.2722167968751], [6.900624415355815, 496.44775390624983], [6.901816998553275, 497.0401611328125], [6.9042162822876465, 498.23413085937483], [7.193052598670793, 665.0791015625001], [7.758155143419732, 1170.29150390625], [8.323023697145112, 2058.795898437501], [9.36298131161099, 5824.533203125004], [9.810748008110926, 9114.308593750004], [11.047341056314202, 31388.40624999998], [11.584925435512535, 53732.765624999956], [12.366958539207397, 117455.0937500001], [13.107089828327874, 246210.62499999983], [13.84248373881162, 513670.1250000003], [14.27084873575108, 788353.2499999999], [15.060339852215408, 1736170.999999999], [15.835873313657556, 3770530.0000000005], [15.977474039173265, 4344089.999999998], [16.943967899150145, 11419360.000000006], [17.943394339560967, 31023239.99999997], [18.214035936745432, 40665424.00000006], [19.374560581709215, 129788063.99999991], [19.927723623778547, 225668224.00000027], [20.619308638400597, 450631936.0000006], [21.129986093026698, 750941952.0000008], [22.05159150215413, 1887358976.0000033], [22.734966842639743, 3738011648.0000052], [23.42954051928097, 7486695423.99999], [23.955498471391667, 12668080127.99998], [24.591055724582848, 23918272512], [25.305424481799395, 48862560256.00005], [26.150535181949436, 113763549183.99998], [26.499894449532565, 161334755328.00018], [27.19075733422632, 321933279232.0004], [27.989721778208146, 715734122496], [28.953212876533797, 1875817529343.9976], ]; for (var [x, y] of cosh_data) assertNear(Math.cosh(x), y); for (var i = -20; i < 20; i++) assertNear(Math.cosh(i), (Math.exp(i) + Math.exp(-i)) / 2); reportCompare(0, 0, "ok");