1 // Copyright 2009 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
14 4.9790119248836735e+00,
15 7.7388724745781045e+00,
16 -2.7688005719200159e-01,
17 -5.0106036182710749e+00,
18 9.6362937071984173e+00,
19 2.9263772392439646e+00,
20 5.2290834314593066e+00,
21 2.7279399104360102e+00,
22 1.8253080916808550e+00,
23 -8.6859247685756013e+00,
26 // The expected results below were computed by the high precision calculators
27 // at http://keisan.casio.com/. More exact input values (array vf[], above)
28 // were obtained by printing them with "%.26f". The answers were calculated
29 // to 26 digits (by using the "Digit number" drop-down control of each
32 1.0496193546107222142571536e+00,
33 6.8584012813664425171660692e-01,
34 1.5984878714577160325521819e+00,
35 2.0956199361475859327461799e+00,
36 2.7053008467824138592616927e-01,
37 1.2738121680361776018155625e+00,
38 1.0205369421140629186287407e+00,
39 1.2945003481781246062157835e+00,
40 1.3872364345374451433846657e+00,
41 2.6231510803970463967294145e+00,
43 var acosh = []float64{
44 2.4743347004159012494457618e+00,
45 2.8576385344292769649802701e+00,
46 7.2796961502981066190593175e-01,
47 2.4796794418831451156471977e+00,
48 3.0552020742306061857212962e+00,
49 2.044238592688586588942468e+00,
50 2.5158701513104513595766636e+00,
51 1.99050839282411638174299e+00,
52 1.6988625798424034227205445e+00,
53 2.9611454842470387925531875e+00,
56 5.2117697218417440497416805e-01,
57 8.8495619865825236751471477e-01,
58 -02.769154466281941332086016e-02,
59 -5.2482360935268931351485822e-01,
60 1.3002662421166552333051524e+00,
61 2.9698415875871901741575922e-01,
62 5.5025938468083370060258102e-01,
63 2.7629597861677201301553823e-01,
64 1.83559892257451475846656e-01,
65 -1.0523547536021497774980928e+00,
67 var asinh = []float64{
68 2.3083139124923523427628243e+00,
69 2.743551594301593620039021e+00,
70 -2.7345908534880091229413487e-01,
71 -2.3145157644718338650499085e+00,
72 2.9613652154015058521951083e+00,
73 1.7949041616585821933067568e+00,
74 2.3564032905983506405561554e+00,
75 1.7287118790768438878045346e+00,
76 1.3626658083714826013073193e+00,
77 -2.8581483626513914445234004e+00,
80 1.372590262129621651920085e+00,
81 1.442290609645298083020664e+00,
82 -2.7011324359471758245192595e-01,
83 -1.3738077684543379452781531e+00,
84 1.4673921193587666049154681e+00,
85 1.2415173565870168649117764e+00,
86 1.3818396865615168979966498e+00,
87 1.2194305844639670701091426e+00,
88 1.0696031952318783760193244e+00,
89 -1.4561721938838084990898679e+00,
91 var atanh = []float64{
92 5.4651163712251938116878204e-01,
93 1.0299474112843111224914709e+00,
94 -2.7695084420740135145234906e-02,
95 -5.5072096119207195480202529e-01,
96 1.9943940993171843235906642e+00,
97 3.01448604578089708203017e-01,
98 5.8033427206942188834370595e-01,
99 2.7987997499441511013958297e-01,
100 1.8459947964298794318714228e-01,
101 -1.3273186910532645867272502e+00,
103 var atan2 = []float64{
104 1.1088291730037004444527075e+00,
105 9.1218183188715804018797795e-01,
106 1.5984772603216203736068915e+00,
107 2.0352918654092086637227327e+00,
108 8.0391819139044720267356014e-01,
109 1.2861075249894661588866752e+00,
110 1.0889904479131695712182587e+00,
111 1.3044821793397925293797357e+00,
112 1.3902530903455392306872261e+00,
113 2.2859857424479142655411058e+00,
115 var cbrt = []float64{
116 1.7075799841925094446722675e+00,
117 1.9779982212970353936691498e+00,
118 -6.5177429017779910853339447e-01,
119 -1.7111838886544019873338113e+00,
120 2.1279920909827937423960472e+00,
121 1.4303536770460741452312367e+00,
122 1.7357021059106154902341052e+00,
123 1.3972633462554328350552916e+00,
124 1.2221149580905388454977636e+00,
125 -2.0556003730500069110343596e+00,
127 var ceil = []float64{
128 5.0000000000000000e+00,
129 8.0000000000000000e+00,
130 0.0000000000000000e+00,
131 -5.0000000000000000e+00,
132 1.0000000000000000e+01,
133 3.0000000000000000e+00,
134 6.0000000000000000e+00,
135 3.0000000000000000e+00,
136 2.0000000000000000e+00,
137 -8.0000000000000000e+00,
139 var copysign = []float64{
140 -4.9790119248836735e+00,
141 -7.7388724745781045e+00,
142 -2.7688005719200159e-01,
143 -5.0106036182710749e+00,
144 -9.6362937071984173e+00,
145 -2.9263772392439646e+00,
146 -5.2290834314593066e+00,
147 -2.7279399104360102e+00,
148 -1.8253080916808550e+00,
149 -8.6859247685756013e+00,
152 2.634752140995199110787593e-01,
153 1.148551260848219865642039e-01,
154 9.6191297325640768154550453e-01,
155 2.938141150061714816890637e-01,
156 -9.777138189897924126294461e-01,
157 -9.7693041344303219127199518e-01,
158 4.940088096948647263961162e-01,
159 -9.1565869021018925545016502e-01,
160 -2.517729313893103197176091e-01,
161 -7.39241351595676573201918e-01,
164 // Results for 100000 * Pi + vf[i]
165 var cosLarge = []float64{
166 2.634752141185559426744e-01,
167 1.14855126055543100712e-01,
168 9.61912973266488928113e-01,
169 2.9381411499556122552e-01,
170 -9.777138189880161924641e-01,
171 -9.76930413445147608049e-01,
172 4.940088097314976789841e-01,
173 -9.15658690217517835002e-01,
174 -2.51772931436786954751e-01,
175 -7.3924135157173099849e-01,
177 var cosh = []float64{
178 7.2668796942212842775517446e+01,
179 1.1479413465659254502011135e+03,
180 1.0385767908766418550935495e+00,
181 7.5000957789658051428857788e+01,
182 7.655246669605357888468613e+03,
183 9.3567491758321272072888257e+00,
184 9.331351599270605471131735e+01,
185 7.6833430994624643209296404e+00,
186 3.1829371625150718153881164e+00,
187 2.9595059261916188501640911e+03,
190 5.1865354817738701906913566e-01,
191 7.2623875834137295116929844e-01,
192 -3.123458688281309990629839e-02,
193 -5.2143121110253302920437013e-01,
194 8.2704742671312902508629582e-01,
195 3.2101767558376376743993945e-01,
196 5.403990312223245516066252e-01,
197 3.0034702916738588551174831e-01,
198 2.0369924417882241241559589e-01,
199 -7.8069386968009226729944677e-01,
201 var erfc = []float64{
202 4.8134645182261298093086434e-01,
203 2.7376124165862704883070156e-01,
204 1.0312345868828130999062984e+00,
205 1.5214312111025330292043701e+00,
206 1.7295257328687097491370418e-01,
207 6.7898232441623623256006055e-01,
208 4.596009687776754483933748e-01,
209 6.9965297083261411448825169e-01,
210 7.9630075582117758758440411e-01,
211 1.7806938696800922672994468e+00,
214 1.4533071302642137507696589e+02,
215 2.2958822575694449002537581e+03,
216 7.5814542574851666582042306e-01,
217 6.6668778421791005061482264e-03,
218 1.5310493273896033740861206e+04,
219 1.8659907517999328638667732e+01,
220 1.8662167355098714543942057e+02,
221 1.5301332413189378961665788e+01,
222 6.2047063430646876349125085e+00,
223 1.6894712385826521111610438e-04,
225 var expm1 = []float64{
226 5.105047796122957327384770212e-02,
227 8.046199708567344080562675439e-02,
228 -2.764970978891639815187418703e-03,
229 -4.8871434888875355394330300273e-02,
230 1.0115864277221467777117227494e-01,
231 2.969616407795910726014621657e-02,
232 5.368214487944892300914037972e-02,
233 2.765488851131274068067445335e-02,
234 1.842068661871398836913874273e-02,
235 -8.3193870863553801814961137573e-02,
237 var exp2 = []float64{
238 3.1537839463286288034313104e+01,
239 2.1361549283756232296144849e+02,
240 8.2537402562185562902577219e-01,
241 3.1021158628740294833424229e-02,
242 7.9581744110252191462569661e+02,
243 7.6019905892596359262696423e+00,
244 3.7506882048388096973183084e+01,
245 6.6250893439173561733216375e+00,
246 3.5438267900243941544605339e+00,
247 2.4281533133513300984289196e-03,
249 var fabs = []float64{
250 4.9790119248836735e+00,
251 7.7388724745781045e+00,
252 2.7688005719200159e-01,
253 5.0106036182710749e+00,
254 9.6362937071984173e+00,
255 2.9263772392439646e+00,
256 5.2290834314593066e+00,
257 2.7279399104360102e+00,
258 1.8253080916808550e+00,
259 8.6859247685756013e+00,
261 var fdim = []float64{
262 4.9790119248836735e+00,
263 7.7388724745781045e+00,
264 0.0000000000000000e+00,
265 0.0000000000000000e+00,
266 9.6362937071984173e+00,
267 2.9263772392439646e+00,
268 5.2290834314593066e+00,
269 2.7279399104360102e+00,
270 1.8253080916808550e+00,
271 0.0000000000000000e+00,
273 var floor = []float64{
274 4.0000000000000000e+00,
275 7.0000000000000000e+00,
276 -1.0000000000000000e+00,
277 -6.0000000000000000e+00,
278 9.0000000000000000e+00,
279 2.0000000000000000e+00,
280 5.0000000000000000e+00,
281 2.0000000000000000e+00,
282 1.0000000000000000e+00,
283 -9.0000000000000000e+00,
285 var fmod = []float64{
286 4.197615023265299782906368e-02,
287 2.261127525421895434476482e+00,
288 3.231794108794261433104108e-02,
289 4.989396381728925078391512e+00,
290 3.637062928015826201999516e-01,
291 1.220868282268106064236690e+00,
292 4.770916568540693347699744e+00,
293 1.816180268691969246219742e+00,
294 8.734595415957246977711748e-01,
295 1.314075231424398637614104e+00,
304 {6.2237649061045918750e-01, 3},
305 {9.6735905932226306250e-01, 3},
306 {-5.5376011438400318000e-01, -1},
307 {-6.2632545228388436250e-01, 3},
308 {6.02268356699901081250e-01, 4},
309 {7.3159430981099115000e-01, 2},
310 {6.5363542893241332500e-01, 3},
311 {6.8198497760900255000e-01, 2},
312 {9.1265404584042750000e-01, 1},
313 {-5.4287029803597508250e-01, 4},
315 var gamma = []float64{
316 2.3254348370739963835386613898e+01,
317 2.991153837155317076427529816e+03,
318 -4.561154336726758060575129109e+00,
319 7.719403468842639065959210984e-01,
320 1.6111876618855418534325755566e+05,
321 1.8706575145216421164173224946e+00,
322 3.4082787447257502836734201635e+01,
323 1.579733951448952054898583387e+00,
324 9.3834586598354592860187267089e-01,
325 -2.093995902923148389186189429e-05,
328 -1.8444682230601672018219338e-01,
329 2.27353668906331975435892e-01,
330 9.809259936157051116270273e-01,
331 -1.741170131426226587841181e-01,
332 -2.1389448451144143352039069e-01,
333 -2.340905848928038763337414e-01,
334 -1.0029099691890912094586326e-01,
335 -1.5466726714884328135358907e-01,
336 3.252650187653420388714693e-01,
337 -8.72218484409407250005360235e-03,
340 -3.251526395295203422162967e-01,
341 1.893581711430515718062564e-01,
342 -1.3711761352467242914491514e-01,
343 3.287486536269617297529617e-01,
344 1.3133899188830978473849215e-01,
345 3.660243417832986825301766e-01,
346 -3.4436769271848174665420672e-01,
347 4.329481396640773768835036e-01,
348 5.8181350531954794639333955e-01,
349 -2.7030574577733036112996607e-01,
352 5.3837518920137802565192769e-02,
353 -1.7841678003393207281244667e-01,
354 9.521746934916464142495821e-03,
355 4.28958355470987397983072e-02,
356 2.4115371837854494725492872e-01,
357 4.842458532394520316844449e-01,
358 -3.142145220618633390125946e-02,
359 4.720849184745124761189957e-01,
360 3.122312022520957042957497e-01,
361 7.096213118930231185707277e-02,
364 -3.684042080996403091021151e-01,
365 2.8157665936340887268092661e-01,
366 4.401005480841948348343589e-04,
367 3.629926999056814081597135e-01,
368 3.123672198825455192489266e-02,
369 -2.958805510589623607540455e-01,
370 -3.2033177696533233403289416e-01,
371 -2.592737332129663376736604e-01,
372 -1.0241334641061485092351251e-01,
373 -2.3762660886100206491674503e-01,
376 {3.146492141244545774319734e+00, 1},
377 {8.003414490659126375852113e+00, 1},
378 {1.517575735509779707488106e+00, -1},
379 {-2.588480028182145853558748e-01, 1},
380 {1.1989897050205555002007985e+01, 1},
381 {6.262899811091257519386906e-01, 1},
382 {3.5287924899091566764846037e+00, 1},
383 {4.5725644770161182299423372e-01, 1},
384 {-6.363667087767961257654854e-02, 1},
385 {-1.077385130910300066425564e+01, -1},
388 1.605231462693062999102599e+00,
389 2.0462560018708770653153909e+00,
390 -1.2841708730962657801275038e+00,
391 1.6115563905281545116286206e+00,
392 2.2655365644872016636317461e+00,
393 1.0737652208918379856272735e+00,
394 1.6542360106073546632707956e+00,
395 1.0035467127723465801264487e+00,
396 6.0174879014578057187016475e-01,
397 2.161703872847352815363655e+00,
399 var logb = []float64{
400 2.0000000000000000e+00,
401 2.0000000000000000e+00,
402 -2.0000000000000000e+00,
403 2.0000000000000000e+00,
404 3.0000000000000000e+00,
405 1.0000000000000000e+00,
406 2.0000000000000000e+00,
407 1.0000000000000000e+00,
408 0.0000000000000000e+00,
409 3.0000000000000000e+00,
411 var log10 = []float64{
412 6.9714316642508290997617083e-01,
413 8.886776901739320576279124e-01,
414 -5.5770832400658929815908236e-01,
415 6.998900476822994346229723e-01,
416 9.8391002850684232013281033e-01,
417 4.6633031029295153334285302e-01,
418 7.1842557117242328821552533e-01,
419 4.3583479968917773161304553e-01,
420 2.6133617905227038228626834e-01,
421 9.3881606348649405716214241e-01,
423 var log1p = []float64{
424 4.8590257759797794104158205e-02,
425 7.4540265965225865330849141e-02,
426 -2.7726407903942672823234024e-03,
427 -5.1404917651627649094953380e-02,
428 9.1998280672258624681335010e-02,
429 2.8843762576593352865894824e-02,
430 5.0969534581863707268992645e-02,
431 2.6913947602193238458458594e-02,
432 1.8088493239630770262045333e-02,
433 -9.0865245631588989681559268e-02,
435 var log2 = []float64{
436 2.3158594707062190618898251e+00,
437 2.9521233862883917703341018e+00,
438 -1.8526669502700329984917062e+00,
439 2.3249844127278861543568029e+00,
440 3.268478366538305087466309e+00,
441 1.5491157592596970278166492e+00,
442 2.3865580889631732407886495e+00,
443 1.447811865817085365540347e+00,
444 8.6813999540425116282815557e-01,
445 3.118679457227342224364709e+00,
447 var modf = [][2]float64{
448 {4.0000000000000000e+00, 9.7901192488367350108546816e-01},
449 {7.0000000000000000e+00, 7.3887247457810456552351752e-01},
450 {Copysign(0, -1), -2.7688005719200159404635997e-01},
451 {-5.0000000000000000e+00, -1.060361827107492160848778e-02},
452 {9.0000000000000000e+00, 6.3629370719841737980004837e-01},
453 {2.0000000000000000e+00, 9.2637723924396464525443662e-01},
454 {5.0000000000000000e+00, 2.2908343145930665230025625e-01},
455 {2.0000000000000000e+00, 7.2793991043601025126008608e-01},
456 {1.0000000000000000e+00, 8.2530809168085506044576505e-01},
457 {-8.0000000000000000e+00, -6.8592476857560136238589621e-01},
459 var nextafter32 = []float32{
460 4.979012489318848e+00,
461 7.738873004913330e+00,
462 -2.768800258636475e-01,
463 -5.010602951049805e+00,
464 9.636294364929199e+00,
465 2.926377534866333e+00,
466 5.229084014892578e+00,
467 2.727940082550049e+00,
468 1.825308203697205e+00,
469 -8.685923576354980e+00,
471 var nextafter64 = []float64{
472 4.97901192488367438926388786e+00,
473 7.73887247457810545370193722e+00,
474 -2.7688005719200153853520874e-01,
475 -5.01060361827107403343006808e+00,
476 9.63629370719841915615688777e+00,
477 2.92637723924396508934364647e+00,
478 5.22908343145930754047867595e+00,
479 2.72793991043601069534929593e+00,
480 1.82530809168085528249036997e+00,
481 -8.68592476857559958602905681e+00,
484 9.5282232631648411840742957e+04,
485 5.4811599352999901232411871e+07,
486 5.2859121715894396531132279e-01,
487 9.7587991957286474464259698e-06,
488 4.328064329346044846740467e+09,
489 8.4406761805034547437659092e+02,
490 1.6946633276191194947742146e+05,
491 5.3449040147551939075312879e+02,
492 6.688182138451414936380374e+01,
493 2.0609869004248742886827439e-09,
495 var remainder = []float64{
496 4.197615023265299782906368e-02,
497 2.261127525421895434476482e+00,
498 3.231794108794261433104108e-02,
499 -2.120723654214984321697556e-02,
500 3.637062928015826201999516e-01,
501 1.220868282268106064236690e+00,
502 -4.581668629186133046005125e-01,
503 -9.117596417440410050403443e-01,
504 8.734595415957246977711748e-01,
505 1.314075231424398637614104e+00,
507 var signbit = []bool{
520 -9.6466616586009283766724726e-01,
521 9.9338225271646545763467022e-01,
522 -2.7335587039794393342449301e-01,
523 9.5586257685042792878173752e-01,
524 -2.099421066779969164496634e-01,
525 2.135578780799860532750616e-01,
526 -8.694568971167362743327708e-01,
527 4.019566681155577786649878e-01,
528 9.6778633541687993721617774e-01,
529 -6.734405869050344734943028e-01,
532 // Results for 100000 * Pi + vf[i]
533 var sinLarge = []float64{
534 -9.646661658548936063912e-01,
535 9.933822527198506903752e-01,
536 -2.7335587036246899796e-01,
537 9.55862576853689321268e-01,
538 -2.099421066862688873691e-01,
539 2.13557878070308981163e-01,
540 -8.694568970959221300497e-01,
541 4.01956668098863248917e-01,
542 9.67786335404528727927e-01,
543 -6.7344058693131973066e-01,
545 var sinh = []float64{
546 7.2661916084208532301448439e+01,
547 1.1479409110035194500526446e+03,
548 -2.8043136512812518927312641e-01,
549 -7.499429091181587232835164e+01,
550 7.6552466042906758523925934e+03,
551 9.3031583421672014313789064e+00,
552 9.330815755828109072810322e+01,
553 7.6179893137269146407361477e+00,
554 3.021769180549615819524392e+00,
555 -2.95950575724449499189888e+03,
557 var sqrt = []float64{
558 2.2313699659365484748756904e+00,
559 2.7818829009464263511285458e+00,
560 5.2619393496314796848143251e-01,
561 2.2384377628763938724244104e+00,
562 3.1042380236055381099288487e+00,
563 1.7106657298385224403917771e+00,
564 2.286718922705479046148059e+00,
565 1.6516476350711159636222979e+00,
566 1.3510396336454586262419247e+00,
567 2.9471892997524949215723329e+00,
570 -3.661316565040227801781974e+00,
571 8.64900232648597589369854e+00,
572 -2.8417941955033612725238097e-01,
573 3.253290185974728640827156e+00,
574 2.147275640380293804770778e-01,
575 -2.18600910711067004921551e-01,
576 -1.760002817872367935518928e+00,
577 -4.389808914752818126249079e-01,
578 -3.843885560201130679995041e+00,
579 9.10988793377685105753416e-01,
582 // Results for 100000 * Pi + vf[i]
583 var tanLarge = []float64{
584 -3.66131656475596512705e+00,
585 8.6490023287202547927e+00,
586 -2.841794195104782406e-01,
587 3.2532901861033120983e+00,
588 2.14727564046880001365e-01,
589 -2.18600910700688062874e-01,
590 -1.760002817699722747043e+00,
591 -4.38980891453536115952e-01,
592 -3.84388555942723509071e+00,
593 9.1098879344275101051e-01,
595 var tanh = []float64{
596 9.9990531206936338549262119e-01,
597 9.9999962057085294197613294e-01,
598 -2.7001505097318677233756845e-01,
599 -9.9991110943061718603541401e-01,
600 9.9999999146798465745022007e-01,
601 9.9427249436125236705001048e-01,
602 9.9994257600983138572705076e-01,
603 9.9149409509772875982054701e-01,
604 9.4936501296239685514466577e-01,
605 -9.9999994291374030946055701e-01,
607 var trunc = []float64{
608 4.0000000000000000e+00,
609 7.0000000000000000e+00,
610 -0.0000000000000000e+00,
611 -5.0000000000000000e+00,
612 9.0000000000000000e+00,
613 2.0000000000000000e+00,
614 5.0000000000000000e+00,
615 2.0000000000000000e+00,
616 1.0000000000000000e+00,
617 -8.0000000000000000e+00,
620 -3.053399153780788357534855e-01,
621 1.7437227649515231515503649e-01,
622 -8.6221781263678836910392572e-01,
623 -3.100664880987498407872839e-01,
624 1.422200649300982280645377e-01,
625 4.000004067997901144239363e-01,
626 -3.3340749753099352392332536e-01,
627 4.5399790746668954555205502e-01,
628 4.8290004112497761007536522e-01,
629 2.7036697826604756229601611e-01,
632 0.15494213737457922210218611,
633 -0.2165955142081145245075746,
634 -2.4644949631241895201032829,
635 0.1442740489541836405154505,
636 0.2215379960518984777080163,
637 0.3038800915160754150565448,
638 0.0691107642452362383808547,
639 0.2380116417809914424860165,
640 -0.20849492979459761009678934,
641 0.0242503179793232308250804,
644 0.3675780219390303613394936,
645 -0.23034826393250119879267257,
646 -16.939677983817727205631397,
647 0.367653980523052152867791,
648 -0.0962401471767804440353136,
649 -0.1923169356184851105200523,
650 0.35984072054267882391843766,
651 -0.2794987252299739821654982,
652 -0.7113490692587462579757954,
653 -0.2647831587821263302087457,
656 -0.14035984421094849100895341,
657 -0.097535139617792072703973,
658 242.25775994555580176377379,
659 -0.1492267014802818619511046,
660 0.26148702629155918694500469,
661 0.56675383593895176530394248,
662 -0.206150264009006981070575,
663 0.64784284687568332737963658,
664 1.3503631555901938037008443,
665 0.1461869756579956803341844,
668 // arguments and expected results for special cases
669 var vfacosSC = []float64{
675 var acosSC = []float64{
682 var vfacoshSC = []float64{
689 var acoshSC = []float64{
697 var vfasinSC = []float64{
704 var asinSC = []float64{
712 var vfasinhSC = []float64{
719 var asinhSC = []float64{
727 var vfatanSC = []float64{
734 var atanSC = []float64{
742 var vfatanhSC = []float64{
753 var atanhSC = []float64{
764 var vfatan2SC = [][2]float64{
775 {Copysign(0, -1), Inf(-1)},
776 {Copysign(0, -1), -Pi},
777 {Copysign(0, -1), Copysign(0, -1)},
778 {Copysign(0, -1), 0},
779 {Copysign(0, -1), +Pi},
780 {Copysign(0, -1), Inf(1)},
781 {Copysign(0, -1), NaN()},
784 {0, Copysign(0, -1)},
801 var atan2SC = []float64{
802 -3 * Pi / 4, // atan2(-Inf, -Inf)
803 -Pi / 2, // atan2(-Inf, -Pi)
804 -Pi / 2, // atan2(-Inf, +0)
805 -Pi / 2, // atan2(-Inf, +Pi)
806 -Pi / 4, // atan2(-Inf, +Inf)
807 NaN(), // atan2(-Inf, NaN)
808 -Pi, // atan2(-Pi, -Inf)
809 -Pi / 2, // atan2(-Pi, +0)
810 Copysign(0, -1), // atan2(-Pi, Inf)
811 NaN(), // atan2(-Pi, NaN)
812 -Pi, // atan2(-0, -Inf)
813 -Pi, // atan2(-0, -Pi)
814 -Pi, // atan2(-0, -0)
815 Copysign(0, -1), // atan2(-0, +0)
816 Copysign(0, -1), // atan2(-0, +Pi)
817 Copysign(0, -1), // atan2(-0, +Inf)
818 NaN(), // atan2(-0, NaN)
819 Pi, // atan2(+0, -Inf)
820 Pi, // atan2(+0, -Pi)
824 0, // atan2(+0, +Inf)
825 NaN(), // atan2(+0, NaN)
826 Pi, // atan2(+Pi, -Inf)
827 Pi / 2, // atan2(+Pi, +0)
828 0, // atan2(+Pi, +Inf)
829 NaN(), // atan2(+Pi, NaN)
830 3 * Pi / 4, // atan2(+Inf, -Inf)
831 Pi / 2, // atan2(+Inf, -Pi)
832 Pi / 2, // atan2(+Inf, +0)
833 Pi / 2, // atan2(+Inf, +Pi)
834 Pi / 4, // atan2(+Inf, +Inf)
835 NaN(), // atan2(+Inf, NaN)
836 NaN(), // atan2(NaN, NaN)
839 var vfcbrtSC = []float64{
846 var cbrtSC = []float64{
854 var vfceilSC = []float64{
861 var ceilSC = []float64{
869 var vfcopysignSC = []float64{
874 var copysignSC = []float64{
880 var vfcosSC = []float64{
885 var cosSC = []float64{
891 var vfcoshSC = []float64{
898 var coshSC = []float64{
906 var vferfSC = []float64{
913 var erfSC = []float64{
921 var vferfcSC = []float64{
926 var erfcSC = []float64{
932 var vfexpSC = []float64{
939 var expSC = []float64{
947 var vfexpm1SC = []float64{
956 var expm1SC = []float64{
966 var vffabsSC = []float64{
973 var fabsSC = []float64{
981 var vffdimSC = [][2]float64{
985 {Copysign(0, -1), Copysign(0, -1)},
986 {Copysign(0, -1), 0},
987 {0, Copysign(0, -1)},
993 {NaN(), Copysign(0, -1)},
998 var nan = Float64frombits(0xFFF8000000000000) // SSE2 DIVSD 0/0
999 var vffdim2SC = [][2]float64{
1003 {Copysign(0, -1), Copysign(0, -1)},
1004 {Copysign(0, -1), 0},
1005 {0, Copysign(0, -1)},
1011 {nan, Copysign(0, -1)},
1016 var fdimSC = []float64{
1033 var fmaxSC = []float64{
1050 var fminSC = []float64{
1068 var vffmodSC = [][2]float64{
1079 {Copysign(0, -1), Inf(-1)},
1080 {Copysign(0, -1), 0},
1081 {Copysign(0, -1), Inf(1)},
1082 {Copysign(0, -1), NaN()},
1104 var fmodSC = []float64{
1105 NaN(), // fmod(-Inf, -Inf)
1106 NaN(), // fmod(-Inf, -Pi)
1107 NaN(), // fmod(-Inf, 0)
1108 NaN(), // fmod(-Inf, Pi)
1109 NaN(), // fmod(-Inf, +Inf)
1110 NaN(), // fmod(-Inf, NaN)
1111 -Pi, // fmod(-Pi, -Inf)
1112 NaN(), // fmod(-Pi, 0)
1113 -Pi, // fmod(-Pi, +Inf)
1114 NaN(), // fmod(-Pi, NaN)
1115 Copysign(0, -1), // fmod(-0, -Inf)
1116 NaN(), // fmod(-0, 0)
1117 Copysign(0, -1), // fmod(-0, Inf)
1118 NaN(), // fmod(-0, NaN)
1120 NaN(), // fmod(0, 0)
1122 NaN(), // fmod(0, NaN)
1123 Pi, // fmod(Pi, -Inf)
1124 NaN(), // fmod(Pi, 0)
1125 Pi, // fmod(Pi, +Inf)
1126 NaN(), // fmod(Pi, NaN)
1127 NaN(), // fmod(+Inf, -Inf)
1128 NaN(), // fmod(+Inf, -Pi)
1129 NaN(), // fmod(+Inf, 0)
1130 NaN(), // fmod(+Inf, Pi)
1131 NaN(), // fmod(+Inf, +Inf)
1132 NaN(), // fmod(+Inf, NaN)
1133 NaN(), // fmod(NaN, -Inf)
1134 NaN(), // fmod(NaN, -Pi)
1135 NaN(), // fmod(NaN, 0)
1136 NaN(), // fmod(NaN, Pi)
1137 NaN(), // fmod(NaN, +Inf)
1138 NaN(), // fmod(NaN, NaN)
1141 var vffrexpSC = []float64{
1150 {Copysign(0, -1), 0},
1156 var vfgammaSC = []float64{
1164 var gammaSC = []float64{
1173 var vfhypotSC = [][2]float64{
1178 {Copysign(0, -1), Copysign(0, -1)},
1179 {Copysign(0, -1), 0},
1180 {0, Copysign(0, -1)},
1194 var hypotSC = []float64{
1216 var vfilogbSC = []float64{
1222 var ilogbSC = []int{
1229 var vfj0SC = []float64{
1235 var j0SC = []float64{
1241 var j1SC = []float64{
1247 var j2SC = []float64{
1253 var jM3SC = []float64{
1260 var vfldexpSC = []fi{
1264 {Copysign(0, -1), 0},
1265 {Copysign(0, -1), -1075},
1266 {Copysign(0, -1), 1024},
1273 var ldexpSC = []float64{
1287 var vflgammaSC = []float64{
1296 var lgammaSC = []fi{
1306 var vflogSC = []float64{
1315 var logSC = []float64{
1325 var vflogbSC = []float64{
1331 var logbSC = []float64{
1338 var vflog1pSC = []float64{
1347 var log1pSC = []float64{
1357 var vfmodfSC = []float64{
1363 var modfSC = [][2]float64{
1364 {Inf(-1), NaN()}, // [2]float64{Copysign(0, -1), Inf(-1)},
1365 {Copysign(0, -1), Copysign(0, -1)},
1366 {Inf(1), NaN()}, // [2]float64{0, Inf(1)},
1370 var vfnextafter32SC = [][2]float32{
1372 {0, float32(Copysign(0, -1))},
1374 {0, float32(NaN())},
1375 {float32(Copysign(0, -1)), 1},
1376 {float32(Copysign(0, -1)), 0},
1377 {float32(Copysign(0, -1)), float32(Copysign(0, -1))},
1378 {float32(Copysign(0, -1)), -1},
1379 {float32(NaN()), 0},
1380 {float32(NaN()), float32(NaN())},
1382 var nextafter32SC = []float32{
1385 -1.401298464e-45, // Float32frombits(0x80000001)
1387 1.401298464e-45, // Float32frombits(0x00000001)
1388 float32(Copysign(0, -1)),
1389 float32(Copysign(0, -1)),
1390 -1.401298464e-45, // Float32frombits(0x80000001)
1395 var vfnextafter64SC = [][2]float64{
1397 {0, Copysign(0, -1)},
1400 {Copysign(0, -1), 1},
1401 {Copysign(0, -1), 0},
1402 {Copysign(0, -1), Copysign(0, -1)},
1403 {Copysign(0, -1), -1},
1407 var nextafter64SC = []float64{
1410 -4.9406564584124654418e-324, // Float64frombits(0x8000000000000001)
1412 4.9406564584124654418e-324, // Float64frombits(0x0000000000000001)
1415 -4.9406564584124654418e-324, // Float64frombits(0x8000000000000001)
1420 var vfpowSC = [][2]float64{
1423 {Inf(-1), Copysign(0, -1)},
1432 {-Pi, Copysign(0, -1)},
1444 {Copysign(0, -1), Inf(-1)},
1445 {Copysign(0, -1), -Pi},
1446 {Copysign(0, -1), -3},
1447 {Copysign(0, -1), 3},
1448 {Copysign(0, -1), Pi},
1449 {Copysign(0, -1), Inf(1)},
1454 {0, Copysign(0, -1)},
1468 {Pi, Copysign(0, -1)},
1474 {Inf(1), Copysign(0, -1)},
1480 {NaN(), Copysign(0, -1)},
1486 var powSC = []float64{
1487 0, // pow(-Inf, -Pi)
1488 Copysign(0, -1), // pow(-Inf, -3)
1491 Inf(-1), // pow(-Inf, 1)
1492 Inf(-1), // pow(-Inf, 3)
1493 Inf(1), // pow(-Inf, Pi)
1494 NaN(), // pow(-Inf, NaN)
1495 0, // pow(-Pi, -Inf)
1496 NaN(), // pow(-Pi, -Pi)
1500 NaN(), // pow(-Pi, Pi)
1501 Inf(1), // pow(-Pi, +Inf)
1502 NaN(), // pow(-Pi, NaN)
1503 1, // pow(-1, -Inf) IEEE 754-2008
1504 1, // pow(-1, +Inf) IEEE 754-2008
1505 NaN(), // pow(-1, NaN)
1506 Inf(1), // pow(-1/2, -Inf)
1507 0, // pow(-1/2, +Inf)
1508 Inf(1), // pow(-0, -Inf)
1509 Inf(1), // pow(-0, -Pi)
1510 Inf(-1), // pow(-0, -3) IEEE 754-2008
1511 Copysign(0, -1), // pow(-0, 3) IEEE 754-2008
1514 Inf(1), // pow(+0, -Inf)
1515 Inf(1), // pow(+0, -Pi)
1516 Inf(1), // pow(+0, -3)
1522 NaN(), // pow(+0, NaN)
1523 Inf(1), // pow(1/2, -Inf)
1524 0, // pow(1/2, +Inf)
1525 1, // pow(1, -Inf) IEEE 754-2008
1526 1, // pow(1, +Inf) IEEE 754-2008
1527 1, // pow(1, NaN) IEEE 754-2008
1528 0, // pow(+Pi, -Inf)
1532 Inf(1), // pow(+Pi, +Inf)
1533 NaN(), // pow(+Pi, NaN)
1534 0, // pow(+Inf, -Pi)
1537 Inf(1), // pow(+Inf, 1)
1538 Inf(1), // pow(+Inf, Pi)
1539 NaN(), // pow(+Inf, NaN)
1540 NaN(), // pow(NaN, -Pi)
1543 NaN(), // pow(NaN, 1)
1544 NaN(), // pow(NaN, +Pi)
1545 NaN(), // pow(NaN, NaN)
1548 var vfpow10SC = []int{
1555 var pow10SC = []float64{
1556 0, // pow10(MinInt32)
1557 Inf(1), // pow10(MaxInt32)
1559 Inf(1), // pow10(309)
1562 var vfsignbitSC = []float64{
1569 var signbitSC = []bool{
1577 var vfsinSC = []float64{
1584 var sinSC = []float64{
1592 var vfsinhSC = []float64{
1599 var sinhSC = []float64{
1607 var vfsqrtSC = []float64{
1615 var sqrtSC = []float64{
1624 var vftanhSC = []float64{
1631 var tanhSC = []float64{
1639 var vfy0SC = []float64{
1645 var y0SC = []float64{
1651 var y1SC = []float64{
1657 var y2SC = []float64{
1663 var yM3SC = []float64{
1670 // arguments and expected results for boundary cases
1672 SmallestNormalFloat64 = 2.2250738585072014e-308 // 2**-1022
1673 LargestSubnormalFloat64 = SmallestNormalFloat64 - SmallestNonzeroFloat64
1676 var vffrexpBC = []float64{
1677 SmallestNormalFloat64,
1678 LargestSubnormalFloat64,
1679 SmallestNonzeroFloat64,
1681 -SmallestNormalFloat64,
1682 -LargestSubnormalFloat64,
1683 -SmallestNonzeroFloat64,
1688 {0.99999999999999978, -1022},
1690 {0.99999999999999989, 1024},
1692 {-0.99999999999999978, -1022},
1694 {-0.99999999999999989, 1024},
1697 var vfldexpBC = []fi{
1698 {SmallestNormalFloat64, -52},
1699 {LargestSubnormalFloat64, -51},
1700 {SmallestNonzeroFloat64, 1074},
1701 {MaxFloat64, -(1023 + 1074)},
1707 var ldexpBC = []float64{
1708 SmallestNonzeroFloat64,
1718 var logbBC = []float64{
1729 func tolerance(a, b, e float64) bool {
1735 // note: b is correct (expected) value, a is actual value.
1736 // make error tolerance a fraction of b, not a.
1745 func kindaclose(a, b float64) bool { return tolerance(a, b, 1e-8) }
1746 func close(a, b float64) bool { return tolerance(a, b, 1e-14) }
1747 func veryclose(a, b float64) bool { return tolerance(a, b, 4e-16) }
1748 func soclose(a, b, e float64) bool { return tolerance(a, b, e) }
1749 func alike(a, b float64) bool {
1751 case IsNaN(a) && IsNaN(b):
1754 return Signbit(a) == Signbit(b)
1759 func TestNaN(t *testing.T) {
1762 t.Fatalf("NaN() returns %g, expected NaN", f64)
1766 t.Fatalf("float32(NaN()) is %g, expected NaN", f32)
1770 func TestAcos(t *testing.T) {
1771 for i := 0; i < len(vf); i++ {
1773 if f := Acos(a); !close(acos[i], f) {
1774 t.Errorf("Acos(%g) = %g, want %g", a, f, acos[i])
1777 for i := 0; i < len(vfacosSC); i++ {
1778 if f := Acos(vfacosSC[i]); !alike(acosSC[i], f) {
1779 t.Errorf("Acos(%g) = %g, want %g", vfacosSC[i], f, acosSC[i])
1784 func TestAcosh(t *testing.T) {
1785 for i := 0; i < len(vf); i++ {
1787 if f := Acosh(a); !veryclose(acosh[i], f) {
1788 t.Errorf("Acosh(%g) = %g, want %g", a, f, acosh[i])
1791 for i := 0; i < len(vfacoshSC); i++ {
1792 if f := Acosh(vfacoshSC[i]); !alike(acoshSC[i], f) {
1793 t.Errorf("Acosh(%g) = %g, want %g", vfacoshSC[i], f, acoshSC[i])
1798 func TestAsin(t *testing.T) {
1799 for i := 0; i < len(vf); i++ {
1801 if f := Asin(a); !veryclose(asin[i], f) {
1802 t.Errorf("Asin(%g) = %g, want %g", a, f, asin[i])
1805 for i := 0; i < len(vfasinSC); i++ {
1806 if f := Asin(vfasinSC[i]); !alike(asinSC[i], f) {
1807 t.Errorf("Asin(%g) = %g, want %g", vfasinSC[i], f, asinSC[i])
1812 func TestAsinh(t *testing.T) {
1813 for i := 0; i < len(vf); i++ {
1814 if f := Asinh(vf[i]); !veryclose(asinh[i], f) {
1815 t.Errorf("Asinh(%g) = %g, want %g", vf[i], f, asinh[i])
1818 for i := 0; i < len(vfasinhSC); i++ {
1819 if f := Asinh(vfasinhSC[i]); !alike(asinhSC[i], f) {
1820 t.Errorf("Asinh(%g) = %g, want %g", vfasinhSC[i], f, asinhSC[i])
1825 func TestAtan(t *testing.T) {
1826 for i := 0; i < len(vf); i++ {
1827 if f := Atan(vf[i]); !veryclose(atan[i], f) {
1828 t.Errorf("Atan(%g) = %g, want %g", vf[i], f, atan[i])
1831 for i := 0; i < len(vfatanSC); i++ {
1832 if f := Atan(vfatanSC[i]); !alike(atanSC[i], f) {
1833 t.Errorf("Atan(%g) = %g, want %g", vfatanSC[i], f, atanSC[i])
1838 func TestAtanh(t *testing.T) {
1839 for i := 0; i < len(vf); i++ {
1841 if f := Atanh(a); !veryclose(atanh[i], f) {
1842 t.Errorf("Atanh(%g) = %g, want %g", a, f, atanh[i])
1845 for i := 0; i < len(vfatanhSC); i++ {
1846 if f := Atanh(vfatanhSC[i]); !alike(atanhSC[i], f) {
1847 t.Errorf("Atanh(%g) = %g, want %g", vfatanhSC[i], f, atanhSC[i])
1852 func TestAtan2(t *testing.T) {
1853 for i := 0; i < len(vf); i++ {
1854 if f := Atan2(10, vf[i]); !veryclose(atan2[i], f) {
1855 t.Errorf("Atan2(10, %g) = %g, want %g", vf[i], f, atan2[i])
1858 for i := 0; i < len(vfatan2SC); i++ {
1859 if f := Atan2(vfatan2SC[i][0], vfatan2SC[i][1]); !alike(atan2SC[i], f) {
1860 t.Errorf("Atan2(%g, %g) = %g, want %g", vfatan2SC[i][0], vfatan2SC[i][1], f, atan2SC[i])
1865 func TestCbrt(t *testing.T) {
1866 for i := 0; i < len(vf); i++ {
1867 if f := Cbrt(vf[i]); !veryclose(cbrt[i], f) {
1868 t.Errorf("Cbrt(%g) = %g, want %g", vf[i], f, cbrt[i])
1871 for i := 0; i < len(vfcbrtSC); i++ {
1872 if f := Cbrt(vfcbrtSC[i]); !alike(cbrtSC[i], f) {
1873 t.Errorf("Cbrt(%g) = %g, want %g", vfcbrtSC[i], f, cbrtSC[i])
1878 func TestCeil(t *testing.T) {
1879 for i := 0; i < len(vf); i++ {
1880 if f := Ceil(vf[i]); ceil[i] != f {
1881 t.Errorf("Ceil(%g) = %g, want %g", vf[i], f, ceil[i])
1884 for i := 0; i < len(vfceilSC); i++ {
1885 if f := Ceil(vfceilSC[i]); !alike(ceilSC[i], f) {
1886 t.Errorf("Ceil(%g) = %g, want %g", vfceilSC[i], f, ceilSC[i])
1891 func TestCopysign(t *testing.T) {
1892 for i := 0; i < len(vf); i++ {
1893 if f := Copysign(vf[i], -1); copysign[i] != f {
1894 t.Errorf("Copysign(%g, -1) = %g, want %g", vf[i], f, copysign[i])
1897 for i := 0; i < len(vf); i++ {
1898 if f := Copysign(vf[i], 1); -copysign[i] != f {
1899 t.Errorf("Copysign(%g, 1) = %g, want %g", vf[i], f, -copysign[i])
1902 for i := 0; i < len(vfcopysignSC); i++ {
1903 if f := Copysign(vfcopysignSC[i], -1); !alike(copysignSC[i], f) {
1904 t.Errorf("Copysign(%g, -1) = %g, want %g", vfcopysignSC[i], f, copysignSC[i])
1909 func TestCos(t *testing.T) {
1910 for i := 0; i < len(vf); i++ {
1911 if f := Cos(vf[i]); !veryclose(cos[i], f) {
1912 t.Errorf("Cos(%g) = %g, want %g", vf[i], f, cos[i])
1915 for i := 0; i < len(vfcosSC); i++ {
1916 if f := Cos(vfcosSC[i]); !alike(cosSC[i], f) {
1917 t.Errorf("Cos(%g) = %g, want %g", vfcosSC[i], f, cosSC[i])
1922 func TestCosh(t *testing.T) {
1923 for i := 0; i < len(vf); i++ {
1924 if f := Cosh(vf[i]); !close(cosh[i], f) {
1925 t.Errorf("Cosh(%g) = %g, want %g", vf[i], f, cosh[i])
1928 for i := 0; i < len(vfcoshSC); i++ {
1929 if f := Cosh(vfcoshSC[i]); !alike(coshSC[i], f) {
1930 t.Errorf("Cosh(%g) = %g, want %g", vfcoshSC[i], f, coshSC[i])
1935 func TestErf(t *testing.T) {
1936 for i := 0; i < len(vf); i++ {
1938 if f := Erf(a); !veryclose(erf[i], f) {
1939 t.Errorf("Erf(%g) = %g, want %g", a, f, erf[i])
1942 for i := 0; i < len(vferfSC); i++ {
1943 if f := Erf(vferfSC[i]); !alike(erfSC[i], f) {
1944 t.Errorf("Erf(%g) = %g, want %g", vferfSC[i], f, erfSC[i])
1949 func TestErfc(t *testing.T) {
1950 for i := 0; i < len(vf); i++ {
1952 if f := Erfc(a); !veryclose(erfc[i], f) {
1953 t.Errorf("Erfc(%g) = %g, want %g", a, f, erfc[i])
1956 for i := 0; i < len(vferfcSC); i++ {
1957 if f := Erfc(vferfcSC[i]); !alike(erfcSC[i], f) {
1958 t.Errorf("Erfc(%g) = %g, want %g", vferfcSC[i], f, erfcSC[i])
1963 func TestExp(t *testing.T) {
1964 testExp(t, Exp, "Exp")
1965 testExp(t, ExpGo, "ExpGo")
1968 func testExp(t *testing.T, Exp func(float64) float64, name string) {
1969 for i := 0; i < len(vf); i++ {
1970 if f := Exp(vf[i]); !close(exp[i], f) {
1971 t.Errorf("%s(%g) = %g, want %g", name, vf[i], f, exp[i])
1974 for i := 0; i < len(vfexpSC); i++ {
1975 if f := Exp(vfexpSC[i]); !alike(expSC[i], f) {
1976 t.Errorf("%s(%g) = %g, want %g", name, vfexpSC[i], f, expSC[i])
1981 func TestExpm1(t *testing.T) {
1982 for i := 0; i < len(vf); i++ {
1984 if f := Expm1(a); !veryclose(expm1[i], f) {
1985 t.Errorf("Expm1(%g) = %g, want %g", a, f, expm1[i])
1988 for i := 0; i < len(vfexpm1SC); i++ {
1989 if f := Expm1(vfexpm1SC[i]); !alike(expm1SC[i], f) {
1990 t.Errorf("Expm1(%g) = %g, want %g", vfexpm1SC[i], f, expm1SC[i])
1995 func TestExp2(t *testing.T) {
1996 testExp2(t, Exp2, "Exp2")
1997 testExp2(t, Exp2Go, "Exp2Go")
2000 func testExp2(t *testing.T, Exp2 func(float64) float64, name string) {
2001 for i := 0; i < len(vf); i++ {
2002 if f := Exp2(vf[i]); !close(exp2[i], f) {
2003 t.Errorf("%s(%g) = %g, want %g", name, vf[i], f, exp2[i])
2006 for i := 0; i < len(vfexpSC); i++ {
2007 if f := Exp2(vfexpSC[i]); !alike(expSC[i], f) {
2008 t.Errorf("%s(%g) = %g, want %g", name, vfexpSC[i], f, expSC[i])
2011 for n := -1074; n < 1024; n++ {
2012 f := Exp2(float64(n))
2015 t.Errorf("%s(%d) = %g, want %g", name, n, f, vf)
2020 func TestAbs(t *testing.T) {
2021 for i := 0; i < len(vf); i++ {
2022 if f := Abs(vf[i]); fabs[i] != f {
2023 t.Errorf("Abs(%g) = %g, want %g", vf[i], f, fabs[i])
2026 for i := 0; i < len(vffabsSC); i++ {
2027 if f := Abs(vffabsSC[i]); !alike(fabsSC[i], f) {
2028 t.Errorf("Abs(%g) = %g, want %g", vffabsSC[i], f, fabsSC[i])
2033 func TestDim(t *testing.T) {
2034 for i := 0; i < len(vf); i++ {
2035 if f := Dim(vf[i], 0); fdim[i] != f {
2036 t.Errorf("Dim(%g, %g) = %g, want %g", vf[i], 0.0, f, fdim[i])
2039 for i := 0; i < len(vffdimSC); i++ {
2040 if f := Dim(vffdimSC[i][0], vffdimSC[i][1]); !alike(fdimSC[i], f) {
2041 t.Errorf("Dim(%g, %g) = %g, want %g", vffdimSC[i][0], vffdimSC[i][1], f, fdimSC[i])
2044 for i := 0; i < len(vffdim2SC); i++ {
2045 if f := Dim(vffdim2SC[i][0], vffdim2SC[i][1]); !alike(fdimSC[i], f) {
2046 t.Errorf("Dim(%g, %g) = %g, want %g", vffdim2SC[i][0], vffdim2SC[i][1], f, fdimSC[i])
2051 func TestFloor(t *testing.T) {
2052 for i := 0; i < len(vf); i++ {
2053 if f := Floor(vf[i]); floor[i] != f {
2054 t.Errorf("Floor(%g) = %g, want %g", vf[i], f, floor[i])
2057 for i := 0; i < len(vfceilSC); i++ {
2058 if f := Floor(vfceilSC[i]); !alike(ceilSC[i], f) {
2059 t.Errorf("Floor(%g) = %g, want %g", vfceilSC[i], f, ceilSC[i])
2064 func TestMax(t *testing.T) {
2065 for i := 0; i < len(vf); i++ {
2066 if f := Max(vf[i], ceil[i]); ceil[i] != f {
2067 t.Errorf("Max(%g, %g) = %g, want %g", vf[i], ceil[i], f, ceil[i])
2070 for i := 0; i < len(vffdimSC); i++ {
2071 if f := Max(vffdimSC[i][0], vffdimSC[i][1]); !alike(fmaxSC[i], f) {
2072 t.Errorf("Max(%g, %g) = %g, want %g", vffdimSC[i][0], vffdimSC[i][1], f, fmaxSC[i])
2075 for i := 0; i < len(vffdim2SC); i++ {
2076 if f := Max(vffdim2SC[i][0], vffdim2SC[i][1]); !alike(fmaxSC[i], f) {
2077 t.Errorf("Max(%g, %g) = %g, want %g", vffdim2SC[i][0], vffdim2SC[i][1], f, fmaxSC[i])
2082 func TestMin(t *testing.T) {
2083 for i := 0; i < len(vf); i++ {
2084 if f := Min(vf[i], floor[i]); floor[i] != f {
2085 t.Errorf("Min(%g, %g) = %g, want %g", vf[i], floor[i], f, floor[i])
2088 for i := 0; i < len(vffdimSC); i++ {
2089 if f := Min(vffdimSC[i][0], vffdimSC[i][1]); !alike(fminSC[i], f) {
2090 t.Errorf("Min(%g, %g) = %g, want %g", vffdimSC[i][0], vffdimSC[i][1], f, fminSC[i])
2093 for i := 0; i < len(vffdim2SC); i++ {
2094 if f := Min(vffdim2SC[i][0], vffdim2SC[i][1]); !alike(fminSC[i], f) {
2095 t.Errorf("Min(%g, %g) = %g, want %g", vffdim2SC[i][0], vffdim2SC[i][1], f, fminSC[i])
2100 func TestMod(t *testing.T) {
2101 for i := 0; i < len(vf); i++ {
2102 if f := Mod(10, vf[i]); fmod[i] != f {
2103 t.Errorf("Mod(10, %g) = %g, want %g", vf[i], f, fmod[i])
2106 for i := 0; i < len(vffmodSC); i++ {
2107 if f := Mod(vffmodSC[i][0], vffmodSC[i][1]); !alike(fmodSC[i], f) {
2108 t.Errorf("Mod(%g, %g) = %g, want %g", vffmodSC[i][0], vffmodSC[i][1], f, fmodSC[i])
2113 func TestFrexp(t *testing.T) {
2114 for i := 0; i < len(vf); i++ {
2115 if f, j := Frexp(vf[i]); !veryclose(frexp[i].f, f) || frexp[i].i != j {
2116 t.Errorf("Frexp(%g) = %g, %d, want %g, %d", vf[i], f, j, frexp[i].f, frexp[i].i)
2119 for i := 0; i < len(vffrexpSC); i++ {
2120 if f, j := Frexp(vffrexpSC[i]); !alike(frexpSC[i].f, f) || frexpSC[i].i != j {
2121 t.Errorf("Frexp(%g) = %g, %d, want %g, %d", vffrexpSC[i], f, j, frexpSC[i].f, frexpSC[i].i)
2124 for i := 0; i < len(vffrexpBC); i++ {
2125 if f, j := Frexp(vffrexpBC[i]); !alike(frexpBC[i].f, f) || frexpBC[i].i != j {
2126 t.Errorf("Frexp(%g) = %g, %d, want %g, %d", vffrexpBC[i], f, j, frexpBC[i].f, frexpBC[i].i)
2131 func TestGamma(t *testing.T) {
2132 for i := 0; i < len(vf); i++ {
2133 if f := Gamma(vf[i]); !close(gamma[i], f) {
2134 t.Errorf("Gamma(%g) = %g, want %g", vf[i], f, gamma[i])
2137 for i := 0; i < len(vfgammaSC); i++ {
2138 if f := Gamma(vfgammaSC[i]); !alike(gammaSC[i], f) {
2139 t.Errorf("Gamma(%g) = %g, want %g", vfgammaSC[i], f, gammaSC[i])
2144 func TestHypot(t *testing.T) {
2145 for i := 0; i < len(vf); i++ {
2146 a := Abs(1e200 * tanh[i] * Sqrt(2))
2147 if f := Hypot(1e200*tanh[i], 1e200*tanh[i]); !veryclose(a, f) {
2148 t.Errorf("Hypot(%g, %g) = %g, want %g", 1e200*tanh[i], 1e200*tanh[i], f, a)
2151 for i := 0; i < len(vfhypotSC); i++ {
2152 if f := Hypot(vfhypotSC[i][0], vfhypotSC[i][1]); !alike(hypotSC[i], f) {
2153 t.Errorf("Hypot(%g, %g) = %g, want %g", vfhypotSC[i][0], vfhypotSC[i][1], f, hypotSC[i])
2158 func TestHypotGo(t *testing.T) {
2159 for i := 0; i < len(vf); i++ {
2160 a := Abs(1e200 * tanh[i] * Sqrt(2))
2161 if f := HypotGo(1e200*tanh[i], 1e200*tanh[i]); !veryclose(a, f) {
2162 t.Errorf("HypotGo(%g, %g) = %g, want %g", 1e200*tanh[i], 1e200*tanh[i], f, a)
2165 for i := 0; i < len(vfhypotSC); i++ {
2166 if f := HypotGo(vfhypotSC[i][0], vfhypotSC[i][1]); !alike(hypotSC[i], f) {
2167 t.Errorf("HypotGo(%g, %g) = %g, want %g", vfhypotSC[i][0], vfhypotSC[i][1], f, hypotSC[i])
2172 func TestIlogb(t *testing.T) {
2173 for i := 0; i < len(vf); i++ {
2174 a := frexp[i].i - 1 // adjust because fr in the interval [½, 1)
2175 if e := Ilogb(vf[i]); a != e {
2176 t.Errorf("Ilogb(%g) = %d, want %d", vf[i], e, a)
2179 for i := 0; i < len(vflogbSC); i++ {
2180 if e := Ilogb(vflogbSC[i]); ilogbSC[i] != e {
2181 t.Errorf("Ilogb(%g) = %d, want %d", vflogbSC[i], e, ilogbSC[i])
2184 for i := 0; i < len(vffrexpBC); i++ {
2185 if e := Ilogb(vffrexpBC[i]); int(logbBC[i]) != e {
2186 t.Errorf("Ilogb(%g) = %d, want %d", vffrexpBC[i], e, int(logbBC[i]))
2191 func TestJ0(t *testing.T) {
2192 for i := 0; i < len(vf); i++ {
2193 if f := J0(vf[i]); !soclose(j0[i], f, 4e-14) {
2194 t.Errorf("J0(%g) = %g, want %g", vf[i], f, j0[i])
2197 for i := 0; i < len(vfj0SC); i++ {
2198 if f := J0(vfj0SC[i]); !alike(j0SC[i], f) {
2199 t.Errorf("J0(%g) = %g, want %g", vfj0SC[i], f, j0SC[i])
2204 func TestJ1(t *testing.T) {
2205 for i := 0; i < len(vf); i++ {
2206 if f := J1(vf[i]); !close(j1[i], f) {
2207 t.Errorf("J1(%g) = %g, want %g", vf[i], f, j1[i])
2210 for i := 0; i < len(vfj0SC); i++ {
2211 if f := J1(vfj0SC[i]); !alike(j1SC[i], f) {
2212 t.Errorf("J1(%g) = %g, want %g", vfj0SC[i], f, j1SC[i])
2217 func TestJn(t *testing.T) {
2218 for i := 0; i < len(vf); i++ {
2219 if f := Jn(2, vf[i]); !close(j2[i], f) {
2220 t.Errorf("Jn(2, %g) = %g, want %g", vf[i], f, j2[i])
2222 if f := Jn(-3, vf[i]); !close(jM3[i], f) {
2223 t.Errorf("Jn(-3, %g) = %g, want %g", vf[i], f, jM3[i])
2226 for i := 0; i < len(vfj0SC); i++ {
2227 if f := Jn(2, vfj0SC[i]); !alike(j2SC[i], f) {
2228 t.Errorf("Jn(2, %g) = %g, want %g", vfj0SC[i], f, j2SC[i])
2230 if f := Jn(-3, vfj0SC[i]); !alike(jM3SC[i], f) {
2231 t.Errorf("Jn(-3, %g) = %g, want %g", vfj0SC[i], f, jM3SC[i])
2236 func TestLdexp(t *testing.T) {
2237 for i := 0; i < len(vf); i++ {
2238 if f := Ldexp(frexp[i].f, frexp[i].i); !veryclose(vf[i], f) {
2239 t.Errorf("Ldexp(%g, %d) = %g, want %g", frexp[i].f, frexp[i].i, f, vf[i])
2242 for i := 0; i < len(vffrexpSC); i++ {
2243 if f := Ldexp(frexpSC[i].f, frexpSC[i].i); !alike(vffrexpSC[i], f) {
2244 t.Errorf("Ldexp(%g, %d) = %g, want %g", frexpSC[i].f, frexpSC[i].i, f, vffrexpSC[i])
2247 for i := 0; i < len(vfldexpSC); i++ {
2248 if f := Ldexp(vfldexpSC[i].f, vfldexpSC[i].i); !alike(ldexpSC[i], f) {
2249 t.Errorf("Ldexp(%g, %d) = %g, want %g", vfldexpSC[i].f, vfldexpSC[i].i, f, ldexpSC[i])
2252 for i := 0; i < len(vffrexpBC); i++ {
2253 if f := Ldexp(frexpBC[i].f, frexpBC[i].i); !alike(vffrexpBC[i], f) {
2254 t.Errorf("Ldexp(%g, %d) = %g, want %g", frexpBC[i].f, frexpBC[i].i, f, vffrexpBC[i])
2257 for i := 0; i < len(vfldexpBC); i++ {
2258 if f := Ldexp(vfldexpBC[i].f, vfldexpBC[i].i); !alike(ldexpBC[i], f) {
2259 t.Errorf("Ldexp(%g, %d) = %g, want %g", vfldexpBC[i].f, vfldexpBC[i].i, f, ldexpBC[i])
2264 func TestLgamma(t *testing.T) {
2265 for i := 0; i < len(vf); i++ {
2266 if f, s := Lgamma(vf[i]); !close(lgamma[i].f, f) || lgamma[i].i != s {
2267 t.Errorf("Lgamma(%g) = %g, %d, want %g, %d", vf[i], f, s, lgamma[i].f, lgamma[i].i)
2270 for i := 0; i < len(vflgammaSC); i++ {
2271 if f, s := Lgamma(vflgammaSC[i]); !alike(lgammaSC[i].f, f) || lgammaSC[i].i != s {
2272 t.Errorf("Lgamma(%g) = %g, %d, want %g, %d", vflgammaSC[i], f, s, lgammaSC[i].f, lgammaSC[i].i)
2277 func TestLog(t *testing.T) {
2278 for i := 0; i < len(vf); i++ {
2280 if f := Log(a); log[i] != f {
2281 t.Errorf("Log(%g) = %g, want %g", a, f, log[i])
2284 if f := Log(10); f != Ln10 {
2285 t.Errorf("Log(%g) = %g, want %g", 10.0, f, Ln10)
2287 for i := 0; i < len(vflogSC); i++ {
2288 if f := Log(vflogSC[i]); !alike(logSC[i], f) {
2289 t.Errorf("Log(%g) = %g, want %g", vflogSC[i], f, logSC[i])
2294 func TestLogb(t *testing.T) {
2295 for i := 0; i < len(vf); i++ {
2296 if f := Logb(vf[i]); logb[i] != f {
2297 t.Errorf("Logb(%g) = %g, want %g", vf[i], f, logb[i])
2300 for i := 0; i < len(vflogbSC); i++ {
2301 if f := Logb(vflogbSC[i]); !alike(logbSC[i], f) {
2302 t.Errorf("Logb(%g) = %g, want %g", vflogbSC[i], f, logbSC[i])
2305 for i := 0; i < len(vffrexpBC); i++ {
2306 if f := Logb(vffrexpBC[i]); !alike(logbBC[i], f) {
2307 t.Errorf("Logb(%g) = %g, want %g", vffrexpBC[i], f, logbBC[i])
2312 func TestLog10(t *testing.T) {
2313 for i := 0; i < len(vf); i++ {
2315 if f := Log10(a); !veryclose(log10[i], f) {
2316 t.Errorf("Log10(%g) = %g, want %g", a, f, log10[i])
2319 if f := Log10(E); f != Log10E {
2320 t.Errorf("Log10(%g) = %g, want %g", E, f, Log10E)
2322 for i := 0; i < len(vflogSC); i++ {
2323 if f := Log10(vflogSC[i]); !alike(logSC[i], f) {
2324 t.Errorf("Log10(%g) = %g, want %g", vflogSC[i], f, logSC[i])
2329 func TestLog1p(t *testing.T) {
2330 for i := 0; i < len(vf); i++ {
2332 if f := Log1p(a); !veryclose(log1p[i], f) {
2333 t.Errorf("Log1p(%g) = %g, want %g", a, f, log1p[i])
2337 if f := Log1p(a); f != Ln10 {
2338 t.Errorf("Log1p(%g) = %g, want %g", a, f, Ln10)
2340 for i := 0; i < len(vflogSC); i++ {
2341 if f := Log1p(vflog1pSC[i]); !alike(log1pSC[i], f) {
2342 t.Errorf("Log1p(%g) = %g, want %g", vflog1pSC[i], f, log1pSC[i])
2347 func TestLog2(t *testing.T) {
2348 for i := 0; i < len(vf); i++ {
2350 if f := Log2(a); !veryclose(log2[i], f) {
2351 t.Errorf("Log2(%g) = %g, want %g", a, f, log2[i])
2354 if f := Log2(E); f != Log2E {
2355 t.Errorf("Log2(%g) = %g, want %g", E, f, Log2E)
2357 for i := 0; i < len(vflogSC); i++ {
2358 if f := Log2(vflogSC[i]); !alike(logSC[i], f) {
2359 t.Errorf("Log2(%g) = %g, want %g", vflogSC[i], f, logSC[i])
2362 for i := -1074; i <= 1023; i++ {
2365 if l != float64(i) {
2366 t.Errorf("Log2(2**%d) = %g, want %d", i, l, i)
2371 func TestModf(t *testing.T) {
2372 for i := 0; i < len(vf); i++ {
2373 if f, g := Modf(vf[i]); !veryclose(modf[i][0], f) || !veryclose(modf[i][1], g) {
2374 t.Errorf("Modf(%g) = %g, %g, want %g, %g", vf[i], f, g, modf[i][0], modf[i][1])
2377 for i := 0; i < len(vfmodfSC); i++ {
2378 if f, g := Modf(vfmodfSC[i]); !alike(modfSC[i][0], f) || !alike(modfSC[i][1], g) {
2379 t.Errorf("Modf(%g) = %g, %g, want %g, %g", vfmodfSC[i], f, g, modfSC[i][0], modfSC[i][1])
2384 func TestNextafter32(t *testing.T) {
2385 for i := 0; i < len(vf); i++ {
2386 vfi := float32(vf[i])
2387 if f := Nextafter32(vfi, 10); nextafter32[i] != f {
2388 t.Errorf("Nextafter32(%g, %g) = %g want %g", vfi, 10.0, f, nextafter32[i])
2391 for i := 0; i < len(vfnextafter32SC); i++ {
2392 if f := Nextafter32(vfnextafter32SC[i][0], vfnextafter32SC[i][1]); !alike(float64(nextafter32SC[i]), float64(f)) {
2393 t.Errorf("Nextafter32(%g, %g) = %g want %g", vfnextafter32SC[i][0], vfnextafter32SC[i][1], f, nextafter32SC[i])
2398 func TestNextafter64(t *testing.T) {
2399 for i := 0; i < len(vf); i++ {
2400 if f := Nextafter(vf[i], 10); nextafter64[i] != f {
2401 t.Errorf("Nextafter64(%g, %g) = %g want %g", vf[i], 10.0, f, nextafter64[i])
2404 for i := 0; i < len(vfnextafter64SC); i++ {
2405 if f := Nextafter(vfnextafter64SC[i][0], vfnextafter64SC[i][1]); !alike(nextafter64SC[i], f) {
2406 t.Errorf("Nextafter64(%g, %g) = %g want %g", vfnextafter64SC[i][0], vfnextafter64SC[i][1], f, nextafter64SC[i])
2411 func TestPow(t *testing.T) {
2412 for i := 0; i < len(vf); i++ {
2413 if f := Pow(10, vf[i]); !close(pow[i], f) {
2414 t.Errorf("Pow(10, %g) = %g, want %g", vf[i], f, pow[i])
2417 for i := 0; i < len(vfpowSC); i++ {
2418 if f := Pow(vfpowSC[i][0], vfpowSC[i][1]); !alike(powSC[i], f) {
2419 t.Errorf("Pow(%g, %g) = %g, want %g", vfpowSC[i][0], vfpowSC[i][1], f, powSC[i])
2424 func TestPow10(t *testing.T) {
2425 for i := 0; i < len(vfpow10SC); i++ {
2426 if f := Pow10(vfpow10SC[i]); !alike(pow10SC[i], f) {
2427 t.Errorf("Pow10(%d) = %g, want %g", vfpow10SC[i], f, pow10SC[i])
2432 func TestRemainder(t *testing.T) {
2433 for i := 0; i < len(vf); i++ {
2434 if f := Remainder(10, vf[i]); remainder[i] != f {
2435 t.Errorf("Remainder(10, %g) = %g, want %g", vf[i], f, remainder[i])
2438 for i := 0; i < len(vffmodSC); i++ {
2439 if f := Remainder(vffmodSC[i][0], vffmodSC[i][1]); !alike(fmodSC[i], f) {
2440 t.Errorf("Remainder(%g, %g) = %g, want %g", vffmodSC[i][0], vffmodSC[i][1], f, fmodSC[i])
2445 func TestSignbit(t *testing.T) {
2446 for i := 0; i < len(vf); i++ {
2447 if f := Signbit(vf[i]); signbit[i] != f {
2448 t.Errorf("Signbit(%g) = %t, want %t", vf[i], f, signbit[i])
2451 for i := 0; i < len(vfsignbitSC); i++ {
2452 if f := Signbit(vfsignbitSC[i]); signbitSC[i] != f {
2453 t.Errorf("Signbit(%g) = %t, want %t", vfsignbitSC[i], f, signbitSC[i])
2457 func TestSin(t *testing.T) {
2458 for i := 0; i < len(vf); i++ {
2459 if f := Sin(vf[i]); !veryclose(sin[i], f) {
2460 t.Errorf("Sin(%g) = %g, want %g", vf[i], f, sin[i])
2463 for i := 0; i < len(vfsinSC); i++ {
2464 if f := Sin(vfsinSC[i]); !alike(sinSC[i], f) {
2465 t.Errorf("Sin(%g) = %g, want %g", vfsinSC[i], f, sinSC[i])
2470 func TestSincos(t *testing.T) {
2471 for i := 0; i < len(vf); i++ {
2472 if s, c := Sincos(vf[i]); !veryclose(sin[i], s) || !veryclose(cos[i], c) {
2473 t.Errorf("Sincos(%g) = %g, %g want %g, %g", vf[i], s, c, sin[i], cos[i])
2478 func TestSinh(t *testing.T) {
2479 for i := 0; i < len(vf); i++ {
2480 if f := Sinh(vf[i]); !close(sinh[i], f) {
2481 t.Errorf("Sinh(%g) = %g, want %g", vf[i], f, sinh[i])
2484 for i := 0; i < len(vfsinhSC); i++ {
2485 if f := Sinh(vfsinhSC[i]); !alike(sinhSC[i], f) {
2486 t.Errorf("Sinh(%g) = %g, want %g", vfsinhSC[i], f, sinhSC[i])
2491 func TestSqrt(t *testing.T) {
2492 for i := 0; i < len(vf); i++ {
2494 if f := SqrtGo(a); sqrt[i] != f {
2495 t.Errorf("SqrtGo(%g) = %g, want %g", a, f, sqrt[i])
2498 if f := Sqrt(a); sqrt[i] != f {
2499 t.Errorf("Sqrt(%g) = %g, want %g", a, f, sqrt[i])
2502 for i := 0; i < len(vfsqrtSC); i++ {
2503 if f := SqrtGo(vfsqrtSC[i]); !alike(sqrtSC[i], f) {
2504 t.Errorf("SqrtGo(%g) = %g, want %g", vfsqrtSC[i], f, sqrtSC[i])
2506 if f := Sqrt(vfsqrtSC[i]); !alike(sqrtSC[i], f) {
2507 t.Errorf("Sqrt(%g) = %g, want %g", vfsqrtSC[i], f, sqrtSC[i])
2512 func TestTan(t *testing.T) {
2513 for i := 0; i < len(vf); i++ {
2514 if f := Tan(vf[i]); !veryclose(tan[i], f) {
2515 t.Errorf("Tan(%g) = %g, want %g", vf[i], f, tan[i])
2518 // same special cases as Sin
2519 for i := 0; i < len(vfsinSC); i++ {
2520 if f := Tan(vfsinSC[i]); !alike(sinSC[i], f) {
2521 t.Errorf("Tan(%g) = %g, want %g", vfsinSC[i], f, sinSC[i])
2526 func TestTanh(t *testing.T) {
2527 for i := 0; i < len(vf); i++ {
2528 if f := Tanh(vf[i]); !veryclose(tanh[i], f) {
2529 t.Errorf("Tanh(%g) = %g, want %g", vf[i], f, tanh[i])
2532 for i := 0; i < len(vftanhSC); i++ {
2533 if f := Tanh(vftanhSC[i]); !alike(tanhSC[i], f) {
2534 t.Errorf("Tanh(%g) = %g, want %g", vftanhSC[i], f, tanhSC[i])
2539 func TestTrunc(t *testing.T) {
2540 for i := 0; i < len(vf); i++ {
2541 if f := Trunc(vf[i]); trunc[i] != f {
2542 t.Errorf("Trunc(%g) = %g, want %g", vf[i], f, trunc[i])
2545 for i := 0; i < len(vfceilSC); i++ {
2546 if f := Trunc(vfceilSC[i]); !alike(ceilSC[i], f) {
2547 t.Errorf("Trunc(%g) = %g, want %g", vfceilSC[i], f, ceilSC[i])
2552 func TestY0(t *testing.T) {
2553 for i := 0; i < len(vf); i++ {
2555 if f := Y0(a); !close(y0[i], f) {
2556 t.Errorf("Y0(%g) = %g, want %g", a, f, y0[i])
2559 for i := 0; i < len(vfy0SC); i++ {
2560 if f := Y0(vfy0SC[i]); !alike(y0SC[i], f) {
2561 t.Errorf("Y0(%g) = %g, want %g", vfy0SC[i], f, y0SC[i])
2566 func TestY1(t *testing.T) {
2567 for i := 0; i < len(vf); i++ {
2569 if f := Y1(a); !soclose(y1[i], f, 2e-14) {
2570 t.Errorf("Y1(%g) = %g, want %g", a, f, y1[i])
2573 for i := 0; i < len(vfy0SC); i++ {
2574 if f := Y1(vfy0SC[i]); !alike(y1SC[i], f) {
2575 t.Errorf("Y1(%g) = %g, want %g", vfy0SC[i], f, y1SC[i])
2580 func TestYn(t *testing.T) {
2581 for i := 0; i < len(vf); i++ {
2583 if f := Yn(2, a); !close(y2[i], f) {
2584 t.Errorf("Yn(2, %g) = %g, want %g", a, f, y2[i])
2586 if f := Yn(-3, a); !close(yM3[i], f) {
2587 t.Errorf("Yn(-3, %g) = %g, want %g", a, f, yM3[i])
2590 for i := 0; i < len(vfy0SC); i++ {
2591 if f := Yn(2, vfy0SC[i]); !alike(y2SC[i], f) {
2592 t.Errorf("Yn(2, %g) = %g, want %g", vfy0SC[i], f, y2SC[i])
2594 if f := Yn(-3, vfy0SC[i]); !alike(yM3SC[i], f) {
2595 t.Errorf("Yn(-3, %g) = %g, want %g", vfy0SC[i], f, yM3SC[i])
2600 // Check that math functions of high angle values
2601 // return accurate results. [Since (vf[i] + large) - large != vf[i],
2602 // testing for Trig(vf[i] + large) == Trig(vf[i]), where large is
2603 // a multiple of 2*Pi, is misleading.]
2604 func TestLargeCos(t *testing.T) {
2605 large := float64(100000 * Pi)
2606 for i := 0; i < len(vf); i++ {
2608 f2 := Cos(vf[i] + large)
2610 t.Errorf("Cos(%g) = %g, want %g", vf[i]+large, f2, f1)
2615 func TestLargeSin(t *testing.T) {
2616 large := float64(100000 * Pi)
2617 for i := 0; i < len(vf); i++ {
2619 f2 := Sin(vf[i] + large)
2621 t.Errorf("Sin(%g) = %g, want %g", vf[i]+large, f2, f1)
2626 func TestLargeSincos(t *testing.T) {
2627 large := float64(100000 * Pi)
2628 for i := 0; i < len(vf); i++ {
2629 f1, g1 := sinLarge[i], cosLarge[i]
2630 f2, g2 := Sincos(vf[i] + large)
2631 if !close(f1, f2) || !close(g1, g2) {
2632 t.Errorf("Sincos(%g) = %g, %g, want %g, %g", vf[i]+large, f2, g2, f1, g1)
2637 func TestLargeTan(t *testing.T) {
2638 large := float64(100000 * Pi)
2639 for i := 0; i < len(vf); i++ {
2641 f2 := Tan(vf[i] + large)
2643 t.Errorf("Tan(%g) = %g, want %g", vf[i]+large, f2, f1)
2648 // Check that math constants are accepted by compiler
2649 // and have right value (assumes strconv.ParseFloat works).
2650 // https://golang.org/issue/201
2652 type floatTest struct {
2658 var floatTests = []floatTest{
2659 {float64(MaxFloat64), "MaxFloat64", "1.7976931348623157e+308"},
2660 {float64(SmallestNonzeroFloat64), "SmallestNonzeroFloat64", "5e-324"},
2661 {float32(MaxFloat32), "MaxFloat32", "3.4028235e+38"},
2662 {float32(SmallestNonzeroFloat32), "SmallestNonzeroFloat32", "1e-45"},
2665 func TestFloatMinMax(t *testing.T) {
2666 for _, tt := range floatTests {
2667 s := fmt.Sprint(tt.val)
2669 t.Errorf("Sprint(%v) = %s, want %s", tt.name, s, tt.str)
2676 func BenchmarkAcos(b *testing.B) {
2677 for i := 0; i < b.N; i++ {
2682 func BenchmarkAcosh(b *testing.B) {
2683 for i := 0; i < b.N; i++ {
2688 func BenchmarkAsin(b *testing.B) {
2689 for i := 0; i < b.N; i++ {
2694 func BenchmarkAsinh(b *testing.B) {
2695 for i := 0; i < b.N; i++ {
2700 func BenchmarkAtan(b *testing.B) {
2701 for i := 0; i < b.N; i++ {
2706 func BenchmarkAtanh(b *testing.B) {
2707 for i := 0; i < b.N; i++ {
2712 func BenchmarkAtan2(b *testing.B) {
2713 for i := 0; i < b.N; i++ {
2718 func BenchmarkCbrt(b *testing.B) {
2719 for i := 0; i < b.N; i++ {
2724 func BenchmarkCeil(b *testing.B) {
2725 for i := 0; i < b.N; i++ {
2730 func BenchmarkCopysign(b *testing.B) {
2731 for i := 0; i < b.N; i++ {
2736 func BenchmarkCos(b *testing.B) {
2737 for i := 0; i < b.N; i++ {
2742 func BenchmarkCosh(b *testing.B) {
2743 for i := 0; i < b.N; i++ {
2748 func BenchmarkErf(b *testing.B) {
2749 for i := 0; i < b.N; i++ {
2754 func BenchmarkErfc(b *testing.B) {
2755 for i := 0; i < b.N; i++ {
2760 func BenchmarkExp(b *testing.B) {
2761 for i := 0; i < b.N; i++ {
2766 func BenchmarkExpGo(b *testing.B) {
2767 for i := 0; i < b.N; i++ {
2772 func BenchmarkExpm1(b *testing.B) {
2773 for i := 0; i < b.N; i++ {
2778 func BenchmarkExp2(b *testing.B) {
2779 for i := 0; i < b.N; i++ {
2784 func BenchmarkExp2Go(b *testing.B) {
2785 for i := 0; i < b.N; i++ {
2790 func BenchmarkAbs(b *testing.B) {
2791 for i := 0; i < b.N; i++ {
2796 func BenchmarkDim(b *testing.B) {
2797 for i := 0; i < b.N; i++ {
2802 func BenchmarkFloor(b *testing.B) {
2803 for i := 0; i < b.N; i++ {
2808 func BenchmarkMax(b *testing.B) {
2809 for i := 0; i < b.N; i++ {
2814 func BenchmarkMin(b *testing.B) {
2815 for i := 0; i < b.N; i++ {
2820 func BenchmarkMod(b *testing.B) {
2821 for i := 0; i < b.N; i++ {
2826 func BenchmarkFrexp(b *testing.B) {
2827 for i := 0; i < b.N; i++ {
2832 func BenchmarkGamma(b *testing.B) {
2833 for i := 0; i < b.N; i++ {
2838 func BenchmarkHypot(b *testing.B) {
2839 for i := 0; i < b.N; i++ {
2844 func BenchmarkHypotGo(b *testing.B) {
2845 for i := 0; i < b.N; i++ {
2850 func BenchmarkIlogb(b *testing.B) {
2851 for i := 0; i < b.N; i++ {
2856 func BenchmarkJ0(b *testing.B) {
2857 for i := 0; i < b.N; i++ {
2862 func BenchmarkJ1(b *testing.B) {
2863 for i := 0; i < b.N; i++ {
2868 func BenchmarkJn(b *testing.B) {
2869 for i := 0; i < b.N; i++ {
2874 func BenchmarkLdexp(b *testing.B) {
2875 for i := 0; i < b.N; i++ {
2880 func BenchmarkLgamma(b *testing.B) {
2881 for i := 0; i < b.N; i++ {
2886 func BenchmarkLog(b *testing.B) {
2887 for i := 0; i < b.N; i++ {
2892 func BenchmarkLogb(b *testing.B) {
2893 for i := 0; i < b.N; i++ {
2898 func BenchmarkLog1p(b *testing.B) {
2899 for i := 0; i < b.N; i++ {
2904 func BenchmarkLog10(b *testing.B) {
2905 for i := 0; i < b.N; i++ {
2910 func BenchmarkLog2(b *testing.B) {
2911 for i := 0; i < b.N; i++ {
2916 func BenchmarkModf(b *testing.B) {
2917 for i := 0; i < b.N; i++ {
2922 func BenchmarkNextafter32(b *testing.B) {
2923 for i := 0; i < b.N; i++ {
2928 func BenchmarkNextafter64(b *testing.B) {
2929 for i := 0; i < b.N; i++ {
2934 func BenchmarkPowInt(b *testing.B) {
2935 for i := 0; i < b.N; i++ {
2940 func BenchmarkPowFrac(b *testing.B) {
2941 for i := 0; i < b.N; i++ {
2946 func BenchmarkPow10Pos(b *testing.B) {
2947 for i := 0; i < b.N; i++ {
2952 func BenchmarkPow10Neg(b *testing.B) {
2953 for i := 0; i < b.N; i++ {
2958 func BenchmarkRemainder(b *testing.B) {
2959 for i := 0; i < b.N; i++ {
2964 func BenchmarkSignbit(b *testing.B) {
2965 for i := 0; i < b.N; i++ {
2970 func BenchmarkSin(b *testing.B) {
2971 for i := 0; i < b.N; i++ {
2976 func BenchmarkSincos(b *testing.B) {
2977 for i := 0; i < b.N; i++ {
2982 func BenchmarkSinh(b *testing.B) {
2983 for i := 0; i < b.N; i++ {
2990 func BenchmarkSqrt(b *testing.B) {
2992 for i := 0; i < b.N; i++ {
2998 func BenchmarkSqrtIndirect(b *testing.B) {
3001 for i := 0; i < b.N; i++ {
3007 func BenchmarkSqrtGo(b *testing.B) {
3009 for i := 0; i < b.N; i++ {
3015 func isPrime(i int) bool {
3016 // Yes, this is a dumb way to write this code,
3017 // but calling Sqrt repeatedly in this way demonstrates
3018 // the benefit of using a direct SQRT instruction on systems
3019 // that have one, whereas the obvious loop seems not to
3020 // demonstrate such a benefit.
3021 for j := 2; float64(j) <= Sqrt(float64(i)); j++ {
3029 func BenchmarkSqrtPrime(b *testing.B) {
3031 for i := 0; i < b.N; i++ {
3032 if isPrime(100003) {
3041 func BenchmarkTan(b *testing.B) {
3042 for i := 0; i < b.N; i++ {
3047 func BenchmarkTanh(b *testing.B) {
3048 for i := 0; i < b.N; i++ {
3052 func BenchmarkTrunc(b *testing.B) {
3053 for i := 0; i < b.N; i++ {
3058 func BenchmarkY0(b *testing.B) {
3059 for i := 0; i < b.N; i++ {
3064 func BenchmarkY1(b *testing.B) {
3065 for i := 0; i < b.N; i++ {
3070 func BenchmarkYn(b *testing.B) {
3071 for i := 0; i < b.N; i++ {