testlist <- list(x1 = c(-2.22185343706559e+202, -3.27111600211021e-198, -2.33854593113844e+146,  1.27971878083934e+183, -2.28150399357844e-47, 4.92563828060621e-96,  -7.07180912196834e+264, -8.46274288580701e-208, 2.00627673889098e+299,  -1.89445775504709e+244, -7.2729443994999e-190, -5.57938189111671e+49,  2.93461103939732e-267, -1.03221589010836e+215, -1.58071589623654e-98,  -8.68829898780811e-166, 1.59276646801998e+237, 7.77444306476325e+210,  4.03067436611322e-297, 1.43310136560898e-109, 3.70921765293572e+76,  -4.80135706782402e+26, -4.4578637272348e+148, -5.26028007819362e-226,  1.80912542654671e-98, -2.499876600871e-29, 3.15286648879824e-282,  -5.18679651306051e+273, -Inf, 2.58500434706479e+72, -3856268.5697472,  5.21994592554915e-133, 4.39864806815584e+164, -1.48660768352799e+104,  1.04337382049418e+191, -Inf, 0.000377457551274081, 7.90831530248497e+303,  4.62860871133725e+52, 3.67213317640944e+21, 3.48823101341619e-275,  -Inf, -1.46212238599656e+88, -3.07829618121116e-113, 1.6446366448806e-107,  -5.05533578400995e-148, 1.66557467183698e+248, -1.20846698849379e+226,  2.07002379001751e+73, 4.90174899046964e-235, Inf), x2 = c(1.7181922467783e+171,  -2.30735335413435e-186, -6.25488519096435e-89, -Inf, 5.45802440758291e+185,  4.50888845779018e+52, 1.16020779795302e+299, Inf, NaN, -1.47933033305366e+144,  NaN, 3.88280223673771e-294, -1.26436211183458e-225, 4.72094366350324e+167,  -7.06636963704572e+194, NA), x3 = c(Inf, -2.45714388214595e-150,  6.54409110705053e-220, 3.98200905154832e+151, -2.31803537745308e+74,  -1.17728132231671e-197, 1.98871288837062e-145, -80251661.1824678,  NA, -1.65190389982434e+207, 1.97712612309085e-189, Inf, -2.31803537745308e+74 ), x4 = c(-3.84242850363452e-153, -1.51467980285055e-94, -6.87766915748754e-141,  -1.01478987653331e-225, 7.80779635949305e+135, -2.39203681763244e-220,  6.7355878827451e-43, 1.69697071694827e-276, 1.85145382852824e+292,  1.33560725709612e+119, -1.01902861222536e+73, 1.87375372933568e+81,  NA, 1.59355545533013e-117, -7.94362405287594e-243, -3.72318188973408e-85,  6.7432132086291e-165, 5.06054307117592e+21, -1.3927394926161e-111,  -1.04640021286181e+175, -5.88973715272078e+276, NA, 1.02184733118173e+195,  -Inf, -2.0204707881999e-16, -7.16248040664436e+75, 1.18942824140256e-292,  -7.38164730466724e-131, -5.79491659932765e-24, 6.36085191710576e-13,  1.54510506854668e-164, -5.47911288637507e+226, 5.03598953239693e+99,  -4.3046876360549e+133, 3.97219760015538e-196, -2.73553568124029e-188,  -3.52211988900958e+89, 4.48939687811734e-241, -3894186888095204,  -4.24246008506815e+210, -0.0481207918042659, -6.46511133191824e-131,  7.55864332864248e+298, -1.05906401961261e-26, 2.70514909249427e+156,  6.7652139938141e-296, -9.25985480221059e+46, -3.19612784246513e+122,  4.00869991315705e+54, -1.96730058096156e+229, 1.26518988825861e-287,  1.76247029008359e+79, 2.32617291676253e-210, -1.13062648109468e+282,  -2.43082702282115e-275, -1.09231906716815e-237, 1.06637244079598e+146,  -6.80047632725146e+199, -3.80254007293188e-159, -3.53243565878062e+185,  -3.5423799584734e+296, -2.51791483455266e+222, -6.81254905199091e+247,  -7.78841424658928e+226, NaN, -4884060918695595008, 5.13194471381998e+103,  3.96921297621094e-258, 3.5230901511519e-122, 3.16663422084874e+130,  -4.08846762500825e+68, -5.14460926447028e+54, -7.56888121539882e-185,  -3.63055771190684e-87, -2.76322095629472e+90, 2.73654802784645e+117,  -1.46618316418617e+184, -1.74518184418866e-210, 5.98582653366211e-95,  4.32863941769723e-153, 1.01248443924177e-140, 1.01525155647915e+30,  2.82569154638119e+196, -3.6217133958895e-142, 0), x5 = c(NA,  1.26589358958666e-273, NaN, -6.92090005584094e+214, -5.04052401909289e-203,  8.18877551800808e+284, -4.18613509850134e+173, 1120787774569.06,  NaN, 2.88964636987654e+133, -6.47247260682496e+254, 3.16722062274813e-168,  Inf, -2.36970585792238e+34, -1.95940938400462e+141, 1.78417811907863e-206,  -3.33661679745827e-275, 7.87827915683723e-233, 2.97511808264551e-36,  NA), xuni = c(3.67028084878549e-190, 1.14848967161438e+84, 7.01878009303846e+74,  -42819266.3797774, 7.30051349438972e+196, -3.51345852350389e+158,  1.28324123148219e-238, -5.61209653241859e-269, -1.17579534381172e-148,  15204076154443918, -1.67090509581536e+96, -8.04819096075682e+106,  -1.35948461904481e-47, -2.75796175515677e+176, -1.80251774602576e-62,  2.80796323240187e+184, 1.02491637078189e-260, 5.552178728467e+302,  -1.02789978679217e+187, 2.6548935345533e+61, 2.49575889384147e+126,  4.59802806503736e+171, -2.61143027403429e-204, -7.30386827287759e+149,  -2.68621660028743e-109, 0.0094331288926973, 2.13343072298867e+233,  3.29496264363594e-87, -8.04464137061278e+161, Inf, 2.21596335222e+294,  6.7077062927991e-28, 9.04347270491226e+142, -1.73486715513658e-174,  NaN, -1.86806462848787e-33, -1.93906988618663e+156, -5.58364661723754e+45,  1.3948443154112e+218, Inf, 3.92329696441767e-306, -1.45726508424943e-122,  1.319403863404e-191, -8.8982951079054e+114, 4.08079453944807e-56,  2.23935011707858e+274, 2.80582912656356e+67, 5.25502954428402e-163,  -8.96794452808953e-42, -6.38740532881761e+49, -1.33710990017368e-232,  NA, -2.07535008981087e-210, -1.03165749610422e+93, 5.67348958285411e-183,  1.01532680079882e-57, -1.71259797985688e-117, -8.90498032667708e+306,  9.77408858586667e+244, -1.70907153030833e+102, -9.0192606551972e+240,  -1.23111451310121e-94, 1.02786907537857e+53, -8.30613509519946e-152,  -5.79641402920963e+157, 4.85207295185837e+77, 5.47866486478822e+70,  -1.80919599972026e-61, 2.75480376536474e-192, -5.86535749918362e+278,  2.11473346031091e+168, -3.64839019945559e-117, -2.33505694792459e+245,  -8.33375563764126e+167, -2.38846784179918e+109, -Inf, 1.15147486905281e-235,  -0.0211748585503757, -4.69250049093499e-132, 4.24609612857714e-211,  2.27155146973327e-266, 8.73924850570461e-142, -1.44985227504856e-104,  -8.59223660897709e+204, 0.00669308547564756, -1.2783548894059e+157,  6.51458326518228e+93, 5.84475306346285e-95, 6.82544349445011e+305,  -1.87484951389455e+95, 4.36072261327303e-186, 2.41251754368047e+138,  -1.10094939226443e-63, 0))
result <- do.call(metacart:::compute_tau_,testlist)
str(result)