5261 libm should stop using synonyms.h
5298 fabs is 0-sized, confuses dis(1) and others
Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Approved by: Gordon Ross <gwr@nexenta.com>

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  24  */
  25 /*
  26  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  27  * Use is subject to license terms.
  28  */
  29 
  30 /*
  31  * floating point Bessel's function of the first and second kinds
  32  * of order zero: j1(x),y1(x);
  33  *
  34  * Special cases:
  35  *      y0(0)=y1(0)=yn(n,0) = -inf with division by zero signal;
  36  *      y0(-ve)=y1(-ve)=yn(n,-ve) are NaN with invalid signal.
  37  */
  38 
  39 #pragma weak __j1l = j1l
  40 #pragma weak __y1l = y1l
  41 
  42 #include "libm.h"
  43 #include "longdouble.h"
  44 
  45 #define GENERIC long double
  46 static const GENERIC
  47 zero    = 0.0L,
  48 small   = 1.0e-9L,
  49 tiny    = 1.0e-38L,
  50 one     = 1.0L,
  51 five    = 5.0L,
  52 invsqrtpi= 5.641895835477562869480794515607725858441e-0001L,
  53 tpi     = 0.636619772367581343075535053490057448L;
  54 
  55 static GENERIC pone(GENERIC);
  56 static GENERIC qone(GENERIC);
  57 
  58 static const GENERIC r0[7] = {
  59   -6.249999999999999999999999999999999627320e-0002L,
  60    1.940606727194041716205384618494641565464e-0003L,
  61   -3.005630423155733701856481469986459043883e-0005L,
  62    2.345586219403918667468341047369572169358e-0007L,
  63   -9.976809285885253587529010109133336669724e-0010L,
  64    2.218743258363623946078958783775107473381e-0012L,
  65   -2.071079656218700604767650924103578046280e-0015L,
  66 };
  67 static const GENERIC s0[7] = {
  68    1.0e0L,
  69    1.061695903156199920738051277075003059555e-0002L,
  70    5.521860513111180371566951179398862692060e-0005L,
  71    1.824214367413754193524107877084979441407e-0007L,
  72    4.098957778439576834818838198039029353925e-0010L,
  73    6.047735079699666389853240090925264056197e-0013L,
  74    4.679044728878836197247923279512047035041e-0016L,
  75 };
  76 
  77 GENERIC
  78 j1l(x) GENERIC x;{
  79         GENERIC z, d, s,c,ss,cc,r;
  80         int i, sgn;
  81 
  82         if (!finitel(x)) return one/x;
  83         sgn = signbitl(x);
  84         x = fabsl(x);
  85         if (x > 1.28L) {
  86                 s = sinl(x);
  87                 c = cosl(x);
  88         /*
  89          * j1(x) = sqrt(2/(pi*x))*(p1(x)*cos(x0)-q1(x)*sin(x0))
  90          * where x0 = x-3pi/4
  91          *      Better formula:
  92          *              cos(x0) = cos(x)cos(3pi/4)+sin(x)sin(3pi/4)
  93          *                      =  1/sqrt(2) * (sin(x) - cos(x))
  94          *              sin(x0) = sin(x)cos(3pi/4)-cos(x)sin(3pi/4)
  95          *                      = -1/sqrt(2) * (cos(x) + sin(x))
  96          * To avoid cancellation, use
  97          *              sin(x) +- cos(x) = -cos(2x)/(sin(x) -+ cos(x))
  98          * to compute the worse one.
  99          */
 100                 if (x>1.0e2450L) {   /* x+x may overflow */
 101                         ss = -s-c;
 102                         cc =  s-c;
 103                 } else if (signbitl(s) != signbitl(c)) {
 104                         cc = s - c;
 105                         ss = cosl(x+x)/cc;
 106                 } else {
 107                         ss = -s-c;
 108                         cc = cosl(x+x)/ss;
 109                 }
 110         /*
 111          * j1(x) = 1/sqrt(pi*x) * (P(1,x)*cc - Q(1,x)*ss)
 112          * y1(x) = 1/sqrt(pi*x) * (P(1,x)*ss + Q(1,x)*cc)
 113          */
 114                 if (x>1.0e120L) return (invsqrtpi*cc)/sqrtl(x);
 115                 d =  invsqrtpi*(pone(x)*cc-qone(x)*ss)/sqrtl(x);
 116                 if (sgn == 0) return d; else return -d;
 117         }
 118         if (x<=small) {
 119             if (x<=tiny) d = 0.5L*x;
 120             else d =  x*(0.5L-x*x*0.125L);
 121             if (sgn == 0) return d; else return -d;
 122         }
 123         z = x*x;
 124             r = r0[6];
 125             s = s0[6];
 126             for (i=5;i>=0;i--) {
 127                 r = r*z + r0[i];
 128                 s = s*z + s0[i];
 129             }
 130         d = x*0.5L+x*(z*(r/s));
 131         if (sgn == 0) return d; else return -d;
 132 }
 133 
 134 static const GENERIC u0[7] = {
 135   -1.960570906462389484060557273467558703503e-0001L,
 136    5.166389353148318460304315890665450006495e-0002L,
 137   -2.229699464105910913337190798743451115604e-0003L,
 138    3.625437034548863342715657067759078267158e-0005L,
 139   -2.689902826993117212255524537353883987171e-0007L,
 140    9.304570592456930912969387719010256018466e-0010L,
 141   -1.234878126794286643318321347997500346131e-0012L,
 142 };
 143 static const GENERIC v0[8] = {
 144    1.0e0L,
 145    1.369394302535807332517110204820556695644e-0002L,
 146    9.508438148097659501433367062605935379588e-0005L,
 147    4.399007309420092056052714797296467565655e-0007L,
 148    1.488083087443756398305819693177715000787e-0009L,
 149    3.751609832625793536245746965768587624922e-0012L,
 150    6.680926434086257291872903276124244131448e-0015L,
 151    6.676602383908906988160099057991121446058e-0018L,
 152 };
 153 
 154 GENERIC
 155 y1l(x) GENERIC x;{
 156         GENERIC z, s,c,ss,cc,u,v;
 157         int i;
 158 
 159         if (isnanl(x)) return x+x;
 160         if (x <= zero) {
 161                 if (x == zero)
 162                     return -one/zero;
 163                 else
 164                     return zero/zero;
 165         }
 166         if (x > 1.28L) {
 167                 if (!finitel(x)) return zero;
 168                 s = sinl(x);
 169                 c = cosl(x);
 170         /*
 171          * j1(x) = sqrt(2/(pi*x))*(p1(x)*cos(x0)-q1(x)*sin(x0))
 172          * where x0 = x-3pi/4
 173          *      Better formula:
 174          *              cos(x0) = cos(x)cos(3pi/4)+sin(x)sin(3pi/4)
 175          *                      =  1/sqrt(2) * (sin(x) - cos(x))
 176          *              sin(x0) = sin(x)cos(3pi/4)-cos(x)sin(3pi/4)
 177          *                      = -1/sqrt(2) * (cos(x) + sin(x))
 178          * To avoid cancellation, use
 179          *              sin(x) +- cos(x) = -cos(2x)/(sin(x) -+ cos(x))
 180          * to compute the worse one.
 181          */
 182                 if (x>1.0e2450L) {   /* x+x may overflow */
 183                         ss = -s-c;
 184                         cc =  s-c;
 185                 } else if (signbitl(s) != signbitl(c)) {
 186                         cc = s - c;
 187                         ss = cosl(x+x)/cc;
 188                 } else {
 189                         ss = -s-c;
 190                         cc = cosl(x+x)/ss;
 191                 }
 192         /*
 193          * j1(x) = 1/sqrt(pi*x) * (P(1,x)*cc - Q(1,x)*ss)
 194          * y1(x) = 1/sqrt(pi*x) * (P(1,x)*ss + Q(1,x)*cc)
 195          */
 196                 if (x>1.0e91L) return (invsqrtpi*ss)/sqrtl(x);
 197                 return invsqrtpi*(pone(x)*ss+qone(x)*cc)/sqrtl(x);
 198         }
 199         if (x<=tiny) {
 200             return (-tpi/x);
 201         }
 202         z = x*x;
 203             u = u0[6]; v = v0[6]+z*v0[7];
 204             for (i=5;i>=0;i--) {
 205                 u = u*z + u0[i];
 206                 v = v*z + v0[i];
 207             }
 208         return(x*(u/v) + tpi*(j1l(x)*logl(x)-one/x));
 209 }
 210 
 211 static const GENERIC pr0[12] = {
 212    1.000000000000000000000000000000000000267e+0000L,
 213    1.060717875045891455602180843276758003035e+0003L,
 214    4.344347542892127024446687712181105852335e+0005L,
 215    8.915680220724007016377924252717410457094e+0007L,
 216    9.969502259938406062809873257569171272819e+0009L,
 217    6.200290193138613035646510338707386316595e+0011L,
 218    2.105978548788015119851815854422247330118e+0013L,
 219    3.696635772784601239371730810311998368948e+0014L,
 220    3.015913097920694682057958412534134515156e+0015L,
 221    9.370298471339353098123277427328592725921e+0015L,
 222    7.190349005196335967340799265074029443057e+0015L,
 223    2.736097786240689996880391074927552517982e+0014L,
 224 };
 225 static const GENERIC ps0[11] = {
 226    1.0e0L,
 227    1.060600687545891455602180843276758095107e+0003L,
 228    4.343106093416975589147153906505338900961e+0005L,
 229    8.910605869002176566582072242244353399059e+0007L,
 230    9.959122058635087888690713917622056540190e+0009L,
 231    6.188744967234948231792482949171041843894e+0011L,
 232    2.098863976953783506401759873801990304907e+0013L,
 233    3.672870357018063196746729751479938908450e+0014L,
 234    2.975538419246824921049011529574385888420e+0015L,
 235    9.063657659995043205018686029284479837091e+0015L,
 236    6.401953344314747916729366441508892711691e+0015L,
 237 };
 238 static const GENERIC pr1[12] = {
 239    1.000000000000000000000023667524130660984e+0000L,
 240    6.746154419979618754354803488126452971204e+0002L,
 241    1.811210781083390154857018330296145970502e+0005L,
 242    2.533098390379924268038005329095287842244e+0007L,
 243    2.029683619805342145252338570875424600729e+0009L,
 244    9.660859662192711465301069401598929980319e+0010L,
 245    2.743396238644831519934098967716621316316e+0012L,
 246    4.553097354140854377931023170263455246288e+0013L,
 247    4.210245069852219757476169864974870720374e+0014L,
 248    1.987334056229596485076645967176169801727e+0015L,
 249    4.067120052787096893838970455751338930462e+0015L,
 250    2.486539606380406398310845264910691398133e+0015L,
 251 };
 252 static const GENERIC ps1[14] = {
 253    1.0e0L,
 254    6.744982544979618754355808680196859521782e+0002L,
 255    1.810421795396966762032155290441364740350e+0005L,
 256    2.530986460644310651529583759699988435573e+0007L,
 257    2.026743276048023121360249288818290224145e+0009L,
 258    9.637461924407405935245269407052641341836e+0010L,
 259    2.732378628423766417402292797028314160831e+0012L,
 260    4.522345274960527124354844364012184278488e+0013L,
 261    4.160650668341743132685335758415469856545e+0014L,
 262    1.943730242988858208243492424892435901211e+0015L,
 263    3.880228532692127989901131618598067450001e+0015L,
 264    2.178020816161154615841000173683302999728e+0015L,
 265   -8.994062666842225551554346698171600634173e+0013L,
 266    1.368520368508851253495764806934619574990e+0013L,
 267 };
 268 static const GENERIC pr2[12] = {
 269    1.000000000000000006938651621840396237282e+0000L,
 270    3.658416291850404981407101077037948144698e+0002L,
 271    5.267073772170356547709794670602812447537e+0004L,
 272    3.912012101226837463014925210735894620442e+0006L,
 273    1.651295648974103957193874928714180765625e+0008L,
 274    4.114901144480797609972484998142146783499e+0009L,
 275    6.092524309766036681542980572526335147672e+0010L,
 276    5.263913178071282616719249969074134570577e+0011L,
 277    2.538408581124324223367341020538081330994e+0012L,
 278    6.288607929360291027895126983015365677648e+0012L,
 279    6.848330048211148419047055075386525945280e+0012L,
 280    2.290309646838867941423178163991423244690e+0012L,
 281 };
 282 static const GENERIC ps2[14] = {
 283    1.0e0L,
 284    3.657244416850405086459410165762319861856e+0002L,
 285    5.262802358425023243992387075861237306312e+0004L,
 286    3.905896813959919648136295861661483848364e+0006L,
 287    1.646791907791461220742694842108202772763e+0008L,
 288    4.096132803064256022224954120208201437344e+0009L,
 289    6.046665195915950447544429445730680236759e+0010L,
 290    5.198061739781991313414052212328653295168e+0011L,
 291    2.484233851814333966401527626421254279796e+0012L,
 292    6.047868806925315879339651539434315255940e+0012L,
 293    6.333103831254091652501642567294101813354e+0012L,
 294    1.875143098754284994467609936924685024968e+0012L,
 295   -5.238330920563392692965412762508813601534e+0010L,
 296    4.656888609439364725427789198383779259957e+0009L,
 297 };
 298 static const GENERIC pr3[13] = {
 299    1.000000000000009336887318068056137842897e+0000L,
 300    2.242719942728459588488051572002835729183e+0002L,
 301    1.955450611382026550266257737331095691092e+0004L,
 302    8.707143293993619899395400562409175590739e+0005L,
 303    2.186267894487004565948324289010954505316e+0007L,
 304    3.224328510541957792360691585667502864688e+0008L,
 305    2.821057355151380597331792896882741364897e+0009L,
 306    1.445371387295422404365584793796028979840e+0010L,
 307    4.181743160669891357783011002656658107864e+0010L,
 308    6.387371088767993119325536137794535513922e+0010L,
 309    4.575619999412716078064070587767416436396e+0010L,
 310    1.228415651211639160620284441690503550842e+0010L,
 311    7.242170349875563053436050532153112882072e+0008L,
 312 };
 313 static const GENERIC ps3[13] = {
 314    1.0e0L,
 315    2.241548067728529551049804610486061401070e+0002L,
 316    1.952838216795552145132137932931237181307e+0004L,
 317    8.684574926493185744628127341069974575526e+0005L,
 318    2.176357771067037962940853412819852189164e+0007L,
 319    3.199958682356132977319258783167122100567e+0008L,
 320    2.786218931525334687844675219914201872570e+0009L,
 321    1.416283776951741549631417572317916039767e+0010L,
 322    4.042962659271567948735676834609348842922e+0010L,
 323    6.028168462646694510083847222968444402161e+0010L,
 324    4.118410226794641413833887606580085281111e+0010L,
 325    9.918735736297038430744161253338202230263e+0009L,
 326    4.092967198238098023219124487437130332038e+0008L,
 327 };
 328 static const GENERIC pr4[13] = {
 329    1.000000000001509220978157399042059553390e+0000L,
 330    1.437551868378147851133499996323782607787e+0002L,
 331    7.911335537418177296041518061404505428004e+0003L,
 332    2.193710939115317214716518908935756104804e+0005L,
 333    3.390662495136730962513489796538274984382e+0006L,
 334    3.048655347929348891006070609293884274789e+0007L,
 335    1.613781633489496606354045161527450975195e+0008L,
 336    4.975089835037230277110156150038482159988e+0008L,
 337    8.636047087015115403880904418339566323264e+0008L,
 338    7.918202912328366140110671223076949101509e+0008L,
 339    3.423294665798984733439650311722794853294e+0008L,
 340    5.621904953441963961040503934782662613621e+0007L,
 341    2.086303543310240260758670404509484499793e+0006L,
 342 };
 343 static const GENERIC ps4[13] = {
 344    1.0e0L,
 345    1.436379993384532371670493319591847362304e+0002L,
 346    7.894647154785430678061053848847436659499e+0003L,
 347    2.184659753392097529008981741550878586174e+0005L,
 348    3.366109083305465176803513738147049499361e+0006L,
 349    3.011911545968996817697665866587226343186e+0007L,
 350    1.582262913779689851316760148459414895301e+0008L,
 351    4.819268809494937919217938589530138201770e+0008L,
 352    8.201355762990450679702837123432527154830e+0008L,
 353    7.268232093982510937417446421282341425212e+0008L,
 354    2.950911909015572933262131323934036480462e+0008L,
 355    4.242839924305934423010858966540621219396e+0007L,
 356    1.064387620445090779182117666330405186866e+0006L,
 357 };
 358 static const GENERIC pr5[13] = {
 359    1.000000000102434805241171427253847353861e+0000L,
 360    9.129332257083629259060502249025963234821e+0001L,
 361    3.132238483586953037576119377504557191413e+0003L,
 362    5.329782528269307971278943122454171107861e+0004L,
 363    4.988460157184117790692873002103052944145e+0005L,
 364    2.686602071615786816147010334256047469378e+0006L,
 365    8.445418526028961197703799808701268301831e+0006L,
 366    1.536575358646141157475725889907900827390e+0007L,
 367    1.568405818236523821796862770586544811945e+0007L,
 368    8.450876239888770102387618667362302173547e+0006L,
 369    2.154414900139567328424026827163203446077e+0006L,
 370    2.105656926565043898888460254808062352205e+0005L,
 371    4.739165011023396507022134303736862812975e+0003L,
 372 };
 373 static const GENERIC ps5[13] = {
 374    1.0e0L,
 375    9.117613509595327476509152673394703847793e+0001L,
 376    3.121697972484015639301279229281770795147e+0003L,
 377    5.294447222735893568040911873834576440255e+0004L,
 378    4.930368882192772335798256684110887882807e+0005L,
 379    2.634854685641165298302167435798357437768e+0006L,
 380    8.185462775400326393555896157031818280918e+0006L,
 381    1.462417423080215192609668642663030667086e+0007L,
 382    1.450624993985851675982860844153954896015e+0007L,
 383    7.460467647561995283219086567162006113864e+0006L,
 384    1.754210981405612478869227142579056338965e+0006L,
 385    1.463286721155271971526264914524746699596e+0005L,
 386    2.155894725796702015341211116579827039459e+0003L,
 387 };
 388 static const GENERIC pr6[13] = {
 389    1.000000003564855546741735920315743157129e+0000L,
 390    5.734003934862540458119423509909510288366e+0001L,
 391    1.209572491935850486086559692291796887976e+0003L,
 392    1.243398391422281247933674779163660286838e+0004L,
 393    6.930996755181437937258220998601708278787e+0004L,
 394    2.198067659532757598646722249966767620099e+0005L,
 395    4.033659432712058633933179115820576858455e+0005L,
 396    4.257759657219008027016047206574574358678e+0005L,
 397    2.511917395876004349480721277445763916389e+0005L,
 398    7.813756153070623654178731651381881953552e+0004L,
 399    1.152069173381127881385588092905864352891e+0004L,
 400    6.548580782804088553777816037551523398082e+0002L,
 401    8.668725370116906132327542766127938496880e+0000L,
 402 };
 403 static const GENERIC ps6[13] = {
 404    1.0e0L,
 405    5.722285236357114566499221525736286205184e+0001L,
 406    1.203010842878317935444582950620339570506e+0003L,
 407    1.230058335378583550155825502172435371208e+0004L,
 408    6.800998550607861288865300438648089894412e+0004L,
 409    2.130767829599304262987769347536850885921e+0005L,
 410    3.840483466643916681759936972992155310026e+0005L,
 411    3.947432373459225542861819148108081160393e+0005L,
 412    2.237816239393081111481588434457838526738e+0005L,
 413    6.545820495124419723398946273790921540774e+0004L,
 414    8.729563630320892741500726213278834737196e+0003L,
 415    4.130762660291894753450174794196998813709e+0002L,
 416    3.480368898672684645130335786015075595598e+0000L,
 417 };
 418 static const GENERIC sixteen = 16.0L;
 419 static const GENERIC eight   = 8.0L;
 420 static const GENERIC huge    = 1.0e30L;
 421 
 422 static GENERIC pone(x)
 423 GENERIC x;
 424 {
 425         GENERIC s,r,t,z;
 426         int i;
 427         if (x>huge) return one;
 428         t = one/x; z = t*t;
 429         if (x>sixteen) {
 430             r = z*pr0[11]+pr0[10]; s = ps0[10];
 431             for (i=9;i>=0;i--) {
 432                 r = z*r + pr0[i];
 433                 s = z*s + ps0[i];
 434             }
 435         } else if (x>eight) {
 436             r = pr1[11]; s = ps1[11]+z*(ps1[12]+z*ps1[13]);
 437             for (i=10;i>=0;i--) {
 438                 r = z*r + pr1[i];
 439                 s = z*s + ps1[i];
 440             }
 441         } else if (x>five) {
 442             r = pr2[11]; s = ps2[11]+z*(ps2[12]+z*ps2[13]);
 443             for (i=10;i>=0;i--) {
 444                 r = z*r + pr2[i];
 445                 s = z*s + ps2[i];
 446             }
 447         } else if (x>3.5L) {
 448             r = pr3[12]; s = ps3[12];
 449             for (i=11;i>=0;i--) {
 450                 r = z*r + pr3[i];
 451                 s = z*s + ps3[i];
 452             }
 453         } else if (x>2.5L) {
 454             r = pr4[12]; s = ps4[12];
 455             for (i=11;i>=0;i--) {
 456                 r = z*r + pr4[i];
 457                 s = z*s + ps4[i];
 458             }
 459         } else if (x> (1.0L/0.5625L)) {
 460             r = pr5[12]; s = ps5[12];
 461             for (i=11;i>=0;i--) {
 462                 r = z*r + pr5[i];
 463                 s = z*s + ps5[i];
 464             }
 465         } else {        /* assume x > 1.28 */
 466             r = pr6[12]; s = ps6[12];
 467             for (i=11;i>=0;i--) {
 468                 r = z*r + pr6[i];
 469                 s = z*s + ps6[i];
 470             }
 471         }
 472         return r/s;
 473 }
 474 
 475 
 476 static const GENERIC qr0[12] = {
 477    3.749999999999999999999999999999999971033e-0001L,
 478    4.256726035237050601607682277433094262226e+0002L,
 479    1.875976490812878489192409978945401066066e+0005L,
 480    4.170314268048041914273603680317745592790e+0007L,
 481    5.092750132543855817293451118974555746551e+0009L,
 482    3.494749676278488654103505795794139483404e+0011L,
 483    1.327062148257437316997667817096694173709e+0013L,
 484    2.648993138273427226907503742066551150490e+0014L,
 485    2.511695665909547412222430494473998127684e+0015L,
 486    9.274694506662289043224310499164702306096e+0015L,
 487    8.150904170663663829331320302911792892002e+0015L,
 488   -5.001918733707662355772037829620388765122e+0014L,
 489 };
 490 static const GENERIC qs0[11] = {
 491    1.0e0L,
 492    1.135400380229880160428715273982155760093e+0003L,
 493    5.005701183877126164326765545516590744360e+0005L,
 494    1.113444200113712167984337603933040102987e+0008L,
 495    1.361074819925223062778717565699039471124e+0010L,
 496    9.355750985802849484438933905325982809653e+0011L,
 497    3.563462786008988825003965543857998084828e+0013L,
 498    7.155145113900094163648726863803802910454e+0014L,
 499    6.871266835834472758055559013851843654113e+0015L,
 500    2.622030899226736712644974988157345234092e+0016L,
 501    2.602912729172876330650077021706139707746e+0016L,
 502 };
 503 static const GENERIC qr1[12] = {
 504    3.749999999999999999997762458207284405806e-0001L,
 505    2.697883998881706839929255517498189980485e+0002L,
 506    7.755195925781028489386938870473834411019e+0004L,
 507    1.166777762104017777198211072895528968355e+0007L,
 508    1.011504772984321168320010084520261069362e+0009L,
 509    5.246007703574156853577754571720205550010e+0010L,
 510    1.637692549885592683166116551691266537647e+0012L,
 511    3.022303623698185669912990310925039382495e+0013L,
 512    3.154769927290655684846107030265909987946e+0014L,
 513    1.715819913441554770089730934808123360921e+0015L,
 514    4.165044355759732622273534445131736188510e+0015L,
 515    3.151381420874174705643100381708086287596e+0015L,
 516 };
 517 static const GENERIC qs1[14] = {
 518    1.0e0L,
 519    7.197091705351218239785633172408276982828e+0002L,
 520    2.070012799599548685544883041297609861055e+0005L,
 521    3.117014815317656221871840152778458754516e+0007L,
 522    2.705719678902554974863325877025902971727e+0009L,
 523    1.406113614727345726925060648750867264098e+0011L,
 524    4.403777536067131320363005978631674817359e+0012L,
 525    8.170725690209322283061499386703167242894e+0013L,
 526    8.609458844975495289227794126964431210566e+0014L,
 527    4.766766367015473481257280600694952920204e+0015L,
 528    1.202286587943342194863557940888115641650e+0016L,
 529    1.012474328306200909525063936061756024120e+0016L,
 530    6.183552022678917858273222879615824070703e+0014L,
 531   -9.756731548558226997573737400988225722740e+0013L,
 532 };
 533 static const GENERIC qr2[12] = {
 534    3.749999999999999481245647262226994293189e-0001L,
 535    1.471366807289771354491181140167359026735e+0002L,
 536    2.279432486768448220142080962843526951250e+0004L,
 537    1.828943048523771225163804043356958285893e+0006L,
 538    8.379828388647823135832220596417725010837e+0007L,
 539    2.279814029335044024585393671278378022053e+0009L,
 540    3.711653952257118120832817785271466441420e+0010L,
 541    3.557650914518554549916730572553105048068e+0011L,
 542    1.924583483146095896259774329498934160650e+0012L,
 543    5.424386256063736390759567088291887140278e+0012L,
 544    6.839325621241776786206509704671746841737e+0012L,
 545    2.702169563144001166291686452305436313971e+0012L,
 546 };
 547 static const GENERIC qs2[14] = {
 548    1.0e0L,
 549    3.926379194439388135703211933895203191089e+0002L,
 550    6.089148804106598297488336063007609312276e+0004L,
 551    4.893546162973278583711376356041614150645e+0006L,
 552    2.247571119114497845046388801813832219404e+0008L,
 553    6.137635663350177751290469334200757872645e+0009L,
 554    1.005115019784102856424493519524998953678e+0011L,
 555    9.725664462014503832860151384604677240620e+0011L,
 556    5.345525100485511116148634192844434636072e+0012L,
 557    1.549944007398946691720862738173956994779e+0013L,
 558    2.067148441178952625710302124163264760362e+0013L,
 559    9.401565402641963611295119487242595462301e+0012L,
 560    3.548217088622398274748837287769709374385e+0011L,
 561   -2.934470341719047120076509938432417352365e+0010L,
 562 };
 563 static const GENERIC qr3[13] = {
 564    3.749999999999412724084579833297451472091e-0001L,
 565    9.058478580291706212422978492938435582527e+0001L,
 566    8.524056033161038750461083666711724381171e+0003L,
 567    4.105967158629109427753434569223631014730e+0005L,
 568    1.118326603378531348259783091972623333657e+0007L,
 569    1.794636683403578918528064904714132329343e+0008L,
 570    1.714314157463635959556133236004368896724e+0009L,
 571    9.622092032236084846572067257267661456030e+0009L,
 572    3.057759524485859159957762858780768355020e+0010L,
 573    5.129306780754798531609621454415938890020e+0010L,
 574    3.999122002794961070680636194346316041352e+0010L,
 575    1.122298454643493485989721564358100345388e+0010L,
 576    5.603981987645989709668830968522362582221e+0008L,
 577 };
 578 static const GENERIC qs3[13] = {
 579    1.0e0L,
 580    2.418328663076578169836155170053634419922e+0002L,
 581    2.279620205900121042587523541281272875520e+0004L,
 582    1.100984222585729521470129014992217092794e+0006L,
 583    3.010743223679247091004262516286654516282e+0007L,
 584    4.860925542827367817289619265215599433996e+0008L,
 585    4.686668111035348691982715864307839581243e+0009L,
 586    2.668701788405102017427214705946730894074e+0010L,
 587    8.677395746106802640390580944836650584903e+0010L,
 588    1.511936455574951790658498795945106643036e+0011L,
 589    1.260845604432623478002018696873608353093e+0011L,
 590    4.052692278419853853911440231600864589805e+0010L,
 591    2.965516519212226064983267822243329694729e+0009L,
 592 };
 593 static const GENERIC qr4[13] = {
 594    3.749999999919234164154669754440123072618e-0001L,
 595    5.844218580776819864791168253485055101858e+0001L,
 596    3.489273514092912982675669411371435670220e+0003L,
 597    1.050523637774575684509663430018995479594e+0005L,
 598    1.764549172059701565500717319792780115289e+0006L,
 599    1.725532438844133795028063102681497371154e+0007L,
 600    9.938114847359778539965140247590176334874e+0007L,
 601    3.331710808184595545396883770200772842314e+0008L,
 602    6.271970557641881511609560444872797282698e+0008L,
 603    6.188529798677357075020774923903737913285e+0008L,
 604    2.821905302742849974509982167877885011629e+0008L,
 605    4.615467358646911976773290256984329814896e+0007L,
 606    1.348140608731546467396685802693380693275e+0006L,
 607 };
 608 static const GENERIC qs4[13] = {
 609    1.0e0L,
 610    1.561192663112345185261418296389902133372e+0002L,
 611    9.346678031144098270547225423124213083072e+0003L,
 612    2.825851246482293547838023847601704751590e+0005L,
 613    4.776572711622156091710902891124911556293e+0006L,
 614    4.715106953717135402977938048006267859302e+0007L,
 615    2.753962350894311316439652227611209035193e+0008L,
 616    9.428501434615463207768964787500411575223e+0008L,
 617    1.832650858775206787088236896454141572617e+0009L,
 618    1.901697378939743226948920874296595242257e+0009L,
 619    9.433322226854293780627188599226380812725e+0008L,
 620    1.808520540608671608680284520798858587370e+0008L,
 621    7.983342331736662753157217446919462398008e+0006L,
 622 };
 623 static const GENERIC qr5[13] = {
 624       3.749999995331364437028988850515190446719e-0001L,
 625       3.739356381766559882677514593041627547911e+0001L,
 626       1.399562500629413529355265462912819802551e+0003L,
 627       2.594154053098947925345332218062210111753e+0004L,
 628       2.640149879297408640394163979394594318371e+0005L,
 629       1.542471854873199142031889093591449397995e+0006L,
 630       5.242272868972053374067572098992335425895e+0006L,
 631       1.025834487769410221329633071426044839935e+0007L,
 632       1.116553924239448940142230579060124209622e+0007L,
 633       6.318076065595910176374916303525884653514e+0006L,
 634       1.641218086168640408527639735915512881785e+0006L,
 635       1.522369793529178644168813882912134706444e+0005L,
 636       2.526530541062297200914180060208669584055e+0003L,
 637 };
 638 static const GENERIC qs5[13] = {
 639       1.0e0L,
 640       9.998960735935075380397545659016287506660e+0001L,
 641       3.758767417842043742686475060540416737562e+0003L,
 642       7.013652806952306520121959742519780781653e+0004L,
 643       7.208949808818615099246529616211730446850e+0005L,
 644       4.272753927109614455417836186072202009252e+0006L,
 645       1.482524411356470699336129814111025434703e+0007L,
 646       2.988750366665678233425279237627700803473e+0007L,
 647       3.396957890261080492694709150553619185065e+0007L,
 648       2.050652487738593004111578091156304540386e+0007L,
 649       5.900504120811732547616511555946279451316e+0006L,
 650       6.563391409260160897024498082273183468347e+0005L,
 651       1.692629845012790205348966731477187041419e+0004L,
 652 };
 653 static const GENERIC qr6[13] = {
 654     3.749999861516664133157566870858975421296e-0001L,
 655     2.367863756747764863120797431599473468918e+0001L,
 656     5.476715802114976248882067325630793143777e+0002L,
 657     6.143190357869842894025012945444096170251e+0003L,
 658     3.716250534677997850513733595140463851730e+0004L,
 659     1.270883463823876752138326905022875657430e+0005L,
 660     2.495301449636814481646371665429083801388e+0005L,
 661     2.789578988212952248340486296254398601942e+0005L,
 662     1.718247946911109055931819087137397324634e+0005L,
 663     5.458973214011665714330326732204106364229e+0004L,
 664     7.912102686687948786048943339759596652813e+0003L,
 665     4.077961006160866935722030715149087938091e+0002L,
 666     3.765206972770245085551057237882528510428e+0000L,
 667 };
 668 static const GENERIC qs6[13] = {
 669     1.0e0L,
 670     6.341646532940517305641893852673926809601e+0001L,
 671     1.477058277414040790932597537920671025359e+0003L,
 672     1.674406564031044491436044253393536487604e+0004L,
 673     1.028516501369755949895050806908994650768e+0005L,
 674     3.593620042532885295087463507733285434207e+0005L,
 675     7.267924991381020915185873399453724799625e+0005L,
 676     8.462277510768818399961191426205006083088e+0005L,
 677     5.514399892230892163373611895645500250514e+0005L,
 678     1.898084241009259353540620272932188102299e+0005L,
 679     3.102941242117739015721984123081026253068e+0004L,
 680     1.958971184431466907681440650181421086143e+0003L,
 681     2.878853357310495087181721613889455121867e+0001L,
 682 };
 683 static GENERIC qone(x)
 684 GENERIC x;
 685 {
 686         GENERIC s,r,t,z;
 687         int i;
 688         if (x>huge) return 0.375L/x;
 689         t = one/x; z = t*t;
 690         if (x>sixteen) {
 691             r = z*qr0[11]+qr0[10]; s = qs0[10];
 692             for (i=9;i>=0;i--) {
 693                 r = z*r + qr0[i];
 694                 s = z*s + qs0[i];
 695             }
 696         } else if (x>eight) {
 697             r = qr1[11]; s = qs1[11]+z*(qs1[12]+z*qs1[13]);
 698             for (i=10;i>=0;i--) {
 699                 r = z*r + qr1[i];
 700                 s = z*s + qs1[i];
 701             }
 702         } else if (x>five) { /* x > 5.0 */
 703             r = qr2[11]; s = qs2[11]+z*(qs2[12]+z*qs2[13]);
 704             for (i=10;i>=0;i--) {
 705                 r = z*r + qr2[i];
 706                 s = z*s + qs2[i];
 707             }
 708         } else if (x>3.5L) {
 709             r = qr3[12]; s = qs3[12];
 710             for (i=11;i>=0;i--) {
 711                 r = z*r + qr3[i];
 712                 s = z*s + qs3[i];
 713             }
 714         } else if (x>2.5L) {
 715             r = qr4[12]; s = qs4[12];
 716             for (i=11;i>=0;i--) {
 717                 r = z*r + qr4[i];
 718                 s = z*s + qs4[i];
 719             }
 720         } else if (x> (1.0L/0.5625L)) {
 721             r = qr5[12]; s = qs5[12];
 722             for (i=11;i>=0;i--) {
 723                 r = z*r + qr5[i];
 724                 s = z*s + qs5[i];
 725             }
 726         } else {        /* assume x > 1.28 */
 727             r = qr6[12]; s = qs6[12];
 728             for (i=11;i>=0;i--) {
 729                 r = z*r + qr6[i];
 730                 s = z*s + qs6[i];
 731             }
 732         }
 733         return t*(r/s);
 734 }
--- EOF ---