1*25c28e83SPiotr Jasiukajtis /*
2*25c28e83SPiotr Jasiukajtis * CDDL HEADER START
3*25c28e83SPiotr Jasiukajtis *
4*25c28e83SPiotr Jasiukajtis * The contents of this file are subject to the terms of the
5*25c28e83SPiotr Jasiukajtis * Common Development and Distribution License (the "License").
6*25c28e83SPiotr Jasiukajtis * You may not use this file except in compliance with the License.
7*25c28e83SPiotr Jasiukajtis *
8*25c28e83SPiotr Jasiukajtis * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*25c28e83SPiotr Jasiukajtis * or http://www.opensolaris.org/os/licensing.
10*25c28e83SPiotr Jasiukajtis * See the License for the specific language governing permissions
11*25c28e83SPiotr Jasiukajtis * and limitations under the License.
12*25c28e83SPiotr Jasiukajtis *
13*25c28e83SPiotr Jasiukajtis * When distributing Covered Code, include this CDDL HEADER in each
14*25c28e83SPiotr Jasiukajtis * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*25c28e83SPiotr Jasiukajtis * If applicable, add the following below this CDDL HEADER, with the
16*25c28e83SPiotr Jasiukajtis * fields enclosed by brackets "[]" replaced with your own identifying
17*25c28e83SPiotr Jasiukajtis * information: Portions Copyright [yyyy] [name of copyright owner]
18*25c28e83SPiotr Jasiukajtis *
19*25c28e83SPiotr Jasiukajtis * CDDL HEADER END
20*25c28e83SPiotr Jasiukajtis */
21*25c28e83SPiotr Jasiukajtis /*
22*25c28e83SPiotr Jasiukajtis * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
23*25c28e83SPiotr Jasiukajtis */
24*25c28e83SPiotr Jasiukajtis /*
25*25c28e83SPiotr Jasiukajtis * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
26*25c28e83SPiotr Jasiukajtis * Use is subject to license terms.
27*25c28e83SPiotr Jasiukajtis */
28*25c28e83SPiotr Jasiukajtis
29*25c28e83SPiotr Jasiukajtis /*
30*25c28e83SPiotr Jasiukajtis * __vexp: double precision vector exp
31*25c28e83SPiotr Jasiukajtis *
32*25c28e83SPiotr Jasiukajtis * Algorithm:
33*25c28e83SPiotr Jasiukajtis *
34*25c28e83SPiotr Jasiukajtis * Write x = (k + j/256)ln2 + r, where k and j are integers, j >= 0,
35*25c28e83SPiotr Jasiukajtis * and |r| <= ln2/512. Then exp(x) = 2^k * 2^(j/256) * exp(r).
36*25c28e83SPiotr Jasiukajtis * Compute exp(r) by a polynomial approximation exp(r) ~ 1 + p(r)
37*25c28e83SPiotr Jasiukajtis * where p(r) := r*(1+r*(B1+r*(B2+r*B3))). From a table, obtain
38*25c28e83SPiotr Jasiukajtis * h and l such that h ~ 2^(j/256) to double precision and h+l
39*25c28e83SPiotr Jasiukajtis * ~ 2^(j/256) to well more than double precision. Then exp(x)
40*25c28e83SPiotr Jasiukajtis * ~ 2^k * (h + (l + h * p(r))) to about double precision. Note
41*25c28e83SPiotr Jasiukajtis * that the multiplication by 2^k requires some finagling when
42*25c28e83SPiotr Jasiukajtis * the result might be subnormal.
43*25c28e83SPiotr Jasiukajtis *
44*25c28e83SPiotr Jasiukajtis * Accuracy:
45*25c28e83SPiotr Jasiukajtis *
46*25c28e83SPiotr Jasiukajtis * For normal results, the largest error observed is less than
47*25c28e83SPiotr Jasiukajtis * 0.6 ulps. For subnormal results, the largest error observed
48*25c28e83SPiotr Jasiukajtis * is 0.737 ulps.
49*25c28e83SPiotr Jasiukajtis */
50*25c28e83SPiotr Jasiukajtis
51*25c28e83SPiotr Jasiukajtis #include <sys/isa_defs.h>
52*25c28e83SPiotr Jasiukajtis
53*25c28e83SPiotr Jasiukajtis #ifdef _LITTLE_ENDIAN
54*25c28e83SPiotr Jasiukajtis #define HI(x) *(1+(int *)&x)
55*25c28e83SPiotr Jasiukajtis #define LO(x) *(unsigned *)&x
56*25c28e83SPiotr Jasiukajtis #define DBLWORD(x, y) y, x
57*25c28e83SPiotr Jasiukajtis #else
58*25c28e83SPiotr Jasiukajtis #define HI(x) *(int *)&x
59*25c28e83SPiotr Jasiukajtis #define LO(x) *(1+(unsigned *)&x)
60*25c28e83SPiotr Jasiukajtis #define DBLWORD(x, y) x, y
61*25c28e83SPiotr Jasiukajtis #endif
62*25c28e83SPiotr Jasiukajtis
63*25c28e83SPiotr Jasiukajtis #ifdef __RESTRICT
64*25c28e83SPiotr Jasiukajtis #define restrict _Restrict
65*25c28e83SPiotr Jasiukajtis #else
66*25c28e83SPiotr Jasiukajtis #define restrict
67*25c28e83SPiotr Jasiukajtis #endif
68*25c28e83SPiotr Jasiukajtis
69*25c28e83SPiotr Jasiukajtis static const double TBL[] = {
70*25c28e83SPiotr Jasiukajtis 1.00000000000000000000e+00, 0.00000000000000000000e+00,
71*25c28e83SPiotr Jasiukajtis 1.00271127505020252180e+00, -3.63661592869226394432e-17,
72*25c28e83SPiotr Jasiukajtis 1.00542990111280272636e+00, 9.49918653545503175702e-17,
73*25c28e83SPiotr Jasiukajtis 1.00815589811841754830e+00, -3.25205875608430806089e-17,
74*25c28e83SPiotr Jasiukajtis 1.01088928605170047526e+00, -1.52347786033685771763e-17,
75*25c28e83SPiotr Jasiukajtis 1.01363008495148942956e+00, 9.28359976818356758749e-18,
76*25c28e83SPiotr Jasiukajtis 1.01637831491095309566e+00, -5.77217007319966002766e-17,
77*25c28e83SPiotr Jasiukajtis 1.01913399607773791367e+00, 3.60190498225966110587e-17,
78*25c28e83SPiotr Jasiukajtis 1.02189714865411662714e+00, 5.10922502897344389359e-17,
79*25c28e83SPiotr Jasiukajtis 1.02466779289713572076e+00, -7.56160786848777820704e-17,
80*25c28e83SPiotr Jasiukajtis 1.02744594911876374610e+00, -4.95607417464536982418e-17,
81*25c28e83SPiotr Jasiukajtis 1.03023163768604097967e+00, 3.31983004108081294377e-17,
82*25c28e83SPiotr Jasiukajtis 1.03302487902122841490e+00, 7.60083887402708848935e-18,
83*25c28e83SPiotr Jasiukajtis 1.03582569360195719810e+00, -7.80678239133763616702e-17,
84*25c28e83SPiotr Jasiukajtis 1.03863410196137873065e+00, 5.99627378885251061843e-17,
85*25c28e83SPiotr Jasiukajtis 1.04145012468831610342e+00, 3.78483048028757620966e-17,
86*25c28e83SPiotr Jasiukajtis 1.04427378242741375480e+00, 8.55188970553796365958e-17,
87*25c28e83SPiotr Jasiukajtis 1.04710509587928979336e+00, 7.27707724310431474861e-17,
88*25c28e83SPiotr Jasiukajtis 1.04994408580068721015e+00, 5.59293784812700258637e-17,
89*25c28e83SPiotr Jasiukajtis 1.05279077300462642341e+00, -9.62948289902693573942e-17,
90*25c28e83SPiotr Jasiukajtis 1.05564517836055715705e+00, 1.75932573877209198414e-18,
91*25c28e83SPiotr Jasiukajtis 1.05850732279451276163e+00, -7.15265185663778073796e-17,
92*25c28e83SPiotr Jasiukajtis 1.06137722728926209292e+00, -1.19735370853656575649e-17,
93*25c28e83SPiotr Jasiukajtis 1.06425491288446449900e+00, 5.07875419861123039357e-17,
94*25c28e83SPiotr Jasiukajtis 1.06714040067682369717e+00, -7.89985396684158212226e-17,
95*25c28e83SPiotr Jasiukajtis 1.07003371182024187291e+00, -9.93716271128891938112e-17,
96*25c28e83SPiotr Jasiukajtis 1.07293486752597555522e+00, -3.83966884335882380671e-18,
97*25c28e83SPiotr Jasiukajtis 1.07584388906279104781e+00, -1.00027161511441361125e-17,
98*25c28e83SPiotr Jasiukajtis 1.07876079775711986031e+00, -6.65666043605659260344e-17,
99*25c28e83SPiotr Jasiukajtis 1.08168561499321524977e+00, -4.78262390299708626556e-17,
100*25c28e83SPiotr Jasiukajtis 1.08461836221330920615e+00, 3.16615284581634611576e-17,
101*25c28e83SPiotr Jasiukajtis 1.08755906091776965994e+00, 5.40934930782029075923e-18,
102*25c28e83SPiotr Jasiukajtis 1.09050773266525768967e+00, -3.04678207981247114697e-17,
103*25c28e83SPiotr Jasiukajtis 1.09346439907288583981e+00, 1.44139581472692093420e-17,
104*25c28e83SPiotr Jasiukajtis 1.09642908181637688259e+00, -5.91993348444931582405e-17,
105*25c28e83SPiotr Jasiukajtis 1.09940180263022191376e+00, 7.17045959970192322483e-17,
106*25c28e83SPiotr Jasiukajtis 1.10238258330784089090e+00, 5.26603687157069438656e-17,
107*25c28e83SPiotr Jasiukajtis 1.10537144570174117320e+00, 8.23928876050021358995e-17,
108*25c28e83SPiotr Jasiukajtis 1.10836841172367872588e+00, -8.78681384518052661558e-17,
109*25c28e83SPiotr Jasiukajtis 1.11137350334481754821e+00, 5.56394502666969764311e-17,
110*25c28e83SPiotr Jasiukajtis 1.11438674259589243221e+00, 1.04102784568455709549e-16,
111*25c28e83SPiotr Jasiukajtis 1.11740815156736927882e+00, -7.97680590262822045601e-17,
112*25c28e83SPiotr Jasiukajtis 1.12043775240960674644e+00, -6.20108590655417874998e-17,
113*25c28e83SPiotr Jasiukajtis 1.12347556733301989773e+00, -9.69973758898704299544e-17,
114*25c28e83SPiotr Jasiukajtis 1.12652161860824184814e+00, 5.16585675879545612073e-17,
115*25c28e83SPiotr Jasiukajtis 1.12957592856628807887e+00, 6.71280585872625658758e-17,
116*25c28e83SPiotr Jasiukajtis 1.13263851959871919561e+00, 3.23735616673800026374e-17,
117*25c28e83SPiotr Jasiukajtis 1.13570941415780546357e+00, 5.06659992612615524241e-17,
118*25c28e83SPiotr Jasiukajtis 1.13878863475669156458e+00, 8.91281267602540777782e-17,
119*25c28e83SPiotr Jasiukajtis 1.14187620396956157620e+00, 4.65109117753141238741e-17,
120*25c28e83SPiotr Jasiukajtis 1.14497214443180417298e+00, 4.64128989217001065651e-17,
121*25c28e83SPiotr Jasiukajtis 1.14807647884017893780e+00, 6.89774023662719177044e-17,
122*25c28e83SPiotr Jasiukajtis 1.15118922995298267331e+00, 3.25071021886382721198e-17,
123*25c28e83SPiotr Jasiukajtis 1.15431042059021593538e+00, 1.04171289462732661865e-16,
124*25c28e83SPiotr Jasiukajtis 1.15744007363375112085e+00, -9.12387123113440028710e-17,
125*25c28e83SPiotr Jasiukajtis 1.16057821202749877898e+00, -3.26104020541739310553e-17,
126*25c28e83SPiotr Jasiukajtis 1.16372485877757747552e+00, 3.82920483692409349872e-17,
127*25c28e83SPiotr Jasiukajtis 1.16688003695248165847e+00, -8.79187957999916974198e-17,
128*25c28e83SPiotr Jasiukajtis 1.17004376968325018993e+00, -1.84774420179000469438e-18,
129*25c28e83SPiotr Jasiukajtis 1.17321608016363732041e+00, -7.28756258658499447915e-17,
130*25c28e83SPiotr Jasiukajtis 1.17639699165028122074e+00, 5.55420325421807896277e-17,
131*25c28e83SPiotr Jasiukajtis 1.17958652746287584456e+00, 1.00923127751003904354e-16,
132*25c28e83SPiotr Jasiukajtis 1.18278471098434101449e+00, 1.54297543007907605845e-17,
133*25c28e83SPiotr Jasiukajtis 1.18599156566099384058e+00, -9.20950683529310590495e-18,
134*25c28e83SPiotr Jasiukajtis 1.18920711500272102690e+00, 3.98201523146564611098e-17,
135*25c28e83SPiotr Jasiukajtis 1.19243138258315117817e+00, 4.39755141560972082715e-17,
136*25c28e83SPiotr Jasiukajtis 1.19566439203982732842e+00, 4.61660367048148139743e-17,
137*25c28e83SPiotr Jasiukajtis 1.19890616707438057986e+00, -9.80919335600842311848e-17,
138*25c28e83SPiotr Jasiukajtis 1.20215673145270307565e+00, 6.64498149925230124489e-17,
139*25c28e83SPiotr Jasiukajtis 1.20541610900512385918e+00, -3.35727219326752963448e-17,
140*25c28e83SPiotr Jasiukajtis 1.20868432362658162482e+00, -4.74672594522898409739e-17,
141*25c28e83SPiotr Jasiukajtis 1.21196139927680124337e+00, -4.89061107752111835732e-17,
142*25c28e83SPiotr Jasiukajtis 1.21524735998046895524e+00, -7.71263069268148813091e-17,
143*25c28e83SPiotr Jasiukajtis 1.21854222982740845183e+00, -9.00672695836383767487e-17,
144*25c28e83SPiotr Jasiukajtis 1.22184603297275762301e+00, -1.06110212114026911612e-16,
145*25c28e83SPiotr Jasiukajtis 1.22515879363714552674e+00, -8.90353381426998342947e-17,
146*25c28e83SPiotr Jasiukajtis 1.22848053610687002468e+00, -1.89878163130252995312e-17,
147*25c28e83SPiotr Jasiukajtis 1.23181128473407586199e+00, 7.38938247161005024655e-17,
148*25c28e83SPiotr Jasiukajtis 1.23515106393693341325e+00, -1.07552443443078413783e-16,
149*25c28e83SPiotr Jasiukajtis 1.23849989819981654016e+00, 2.76770205557396742995e-17,
150*25c28e83SPiotr Jasiukajtis 1.24185781207348400201e+00, 4.65802759183693679123e-17,
151*25c28e83SPiotr Jasiukajtis 1.24522483017525797955e+00, -4.67724044984672750044e-17,
152*25c28e83SPiotr Jasiukajtis 1.24860097718920481924e+00, -8.26181099902196355046e-17,
153*25c28e83SPiotr Jasiukajtis 1.25198627786631622172e+00, 4.83416715246989759959e-17,
154*25c28e83SPiotr Jasiukajtis 1.25538075702469109629e+00, -6.71138982129687841853e-18,
155*25c28e83SPiotr Jasiukajtis 1.25878443954971652730e+00, -8.42178258773059935677e-17,
156*25c28e83SPiotr Jasiukajtis 1.26219735039425073886e+00, -3.08446488747384584900e-17,
157*25c28e83SPiotr Jasiukajtis 1.26561951457880628169e+00, 4.25057700345086802072e-17,
158*25c28e83SPiotr Jasiukajtis 1.26905095719173321989e+00, 2.66793213134218609523e-18,
159*25c28e83SPiotr Jasiukajtis 1.27249170338940276181e+00, -1.05779162672124210291e-17,
160*25c28e83SPiotr Jasiukajtis 1.27594177839639200123e+00, 9.91543024421429032951e-17,
161*25c28e83SPiotr Jasiukajtis 1.27940120750566932450e+00, -9.75909500835606221035e-17,
162*25c28e83SPiotr Jasiukajtis 1.28287001607877826359e+00, 1.71359491824356096814e-17,
163*25c28e83SPiotr Jasiukajtis 1.28634822954602556777e+00, -3.41695570693618197638e-17,
164*25c28e83SPiotr Jasiukajtis 1.28983587340666572274e+00, 8.94925753089759172195e-17,
165*25c28e83SPiotr Jasiukajtis 1.29333297322908946647e+00, -2.97459044313275164581e-17,
166*25c28e83SPiotr Jasiukajtis 1.29683955465100964055e+00, 2.53825027948883149593e-17,
167*25c28e83SPiotr Jasiukajtis 1.30035564337965059423e+00, 5.67872810280221742200e-17,
168*25c28e83SPiotr Jasiukajtis 1.30388126519193581210e+00, 8.64767559826787117946e-17,
169*25c28e83SPiotr Jasiukajtis 1.30741644593467731816e+00, -7.33664565287886889230e-17,
170*25c28e83SPiotr Jasiukajtis 1.31096121152476441374e+00, -7.18153613551945385697e-17,
171*25c28e83SPiotr Jasiukajtis 1.31451558794935463581e+00, 2.26754331510458564505e-17,
172*25c28e83SPiotr Jasiukajtis 1.31807960126606404927e+00, -5.45795582714915288619e-17,
173*25c28e83SPiotr Jasiukajtis 1.32165327760315753913e+00, -2.48063824591302174150e-17,
174*25c28e83SPiotr Jasiukajtis 1.32523664315974132322e+00, -2.85873121003886075697e-17,
175*25c28e83SPiotr Jasiukajtis 1.32882972420595435459e+00, 4.08908622391016005195e-17,
176*25c28e83SPiotr Jasiukajtis 1.33243254708316150037e+00, -5.10158663091674334319e-17,
177*25c28e83SPiotr Jasiukajtis 1.33604513820414583236e+00, -5.89186635638880135250e-17,
178*25c28e83SPiotr Jasiukajtis 1.33966752405330291609e+00, 8.92728259483173198426e-17,
179*25c28e83SPiotr Jasiukajtis 1.34329973118683532185e+00, -5.80258089020143775130e-17,
180*25c28e83SPiotr Jasiukajtis 1.34694178623294580355e+00, 3.22406510125467916913e-17,
181*25c28e83SPiotr Jasiukajtis 1.35059371589203447428e+00, -8.28711038146241653260e-17,
182*25c28e83SPiotr Jasiukajtis 1.35425554693689265129e+00, 7.70094837980298946162e-17,
183*25c28e83SPiotr Jasiukajtis 1.35792730621290114179e+00, -9.52963574482518886709e-17,
184*25c28e83SPiotr Jasiukajtis 1.36160902063822475405e+00, 1.53378766127066804593e-18,
185*25c28e83SPiotr Jasiukajtis 1.36530071720401191548e+00, -1.00053631259747639350e-16,
186*25c28e83SPiotr Jasiukajtis 1.36900242297459051599e+00, 9.59379791911884877256e-17,
187*25c28e83SPiotr Jasiukajtis 1.37271416508766841424e+00, -4.49596059523484126201e-17,
188*25c28e83SPiotr Jasiukajtis 1.37643597075453016920e+00, -6.89858893587180104162e-17,
189*25c28e83SPiotr Jasiukajtis 1.38016786726023799048e+00, 1.05103145799699839462e-16,
190*25c28e83SPiotr Jasiukajtis 1.38390988196383202258e+00, -6.77051165879478628716e-17,
191*25c28e83SPiotr Jasiukajtis 1.38766204229852907481e+00, 8.42298427487541531762e-17,
192*25c28e83SPiotr Jasiukajtis 1.39142437577192623621e+00, -4.90617486528898870821e-17,
193*25c28e83SPiotr Jasiukajtis 1.39519690996620027157e+00, -9.32933622422549531960e-17,
194*25c28e83SPiotr Jasiukajtis 1.39897967253831123635e+00, -9.61421320905132307233e-17,
195*25c28e83SPiotr Jasiukajtis 1.40277269122020475933e+00, -5.29578324940798922316e-17,
196*25c28e83SPiotr Jasiukajtis 1.40657599381901543545e+00, 7.03491481213642218800e-18,
197*25c28e83SPiotr Jasiukajtis 1.41038960821727066275e+00, 4.16654872843506164270e-17,
198*25c28e83SPiotr Jasiukajtis 1.41421356237309514547e+00, -9.66729331345291345105e-17,
199*25c28e83SPiotr Jasiukajtis 1.41804788432041517510e+00, 2.27443854218552945230e-17,
200*25c28e83SPiotr Jasiukajtis 1.42189260216916557589e+00, -1.60778289158902441338e-17,
201*25c28e83SPiotr Jasiukajtis 1.42574774410549420800e+00, 9.88069075850060728430e-17,
202*25c28e83SPiotr Jasiukajtis 1.42961333839197002327e+00, -1.20316424890536551792e-17,
203*25c28e83SPiotr Jasiukajtis 1.43348941336778890054e+00, -5.80245424392682610310e-17,
204*25c28e83SPiotr Jasiukajtis 1.43737599744898236764e+00, -4.20403401646755661225e-17,
205*25c28e83SPiotr Jasiukajtis 1.44127311912862565713e+00, 5.60250365087898567501e-18,
206*25c28e83SPiotr Jasiukajtis 1.44518080697704665027e+00, -3.02375813499398731940e-17,
207*25c28e83SPiotr Jasiukajtis 1.44909908964203504311e+00, -6.25940500081930925441e-17,
208*25c28e83SPiotr Jasiukajtis 1.45302799584905262265e+00, -5.77994860939610610226e-17,
209*25c28e83SPiotr Jasiukajtis 1.45696755440144376514e+00, 5.64867945387699814049e-17,
210*25c28e83SPiotr Jasiukajtis 1.46091779418064704466e+00, -5.60037718607521580013e-17,
211*25c28e83SPiotr Jasiukajtis 1.46487874414640573129e+00, 9.53076754358715731900e-17,
212*25c28e83SPiotr Jasiukajtis 1.46885043333698184220e+00, 8.46588275653362637570e-17,
213*25c28e83SPiotr Jasiukajtis 1.47283289086936752810e+00, 6.69177408194058937165e-17,
214*25c28e83SPiotr Jasiukajtis 1.47682614593949934623e+00, -3.48399455689279579579e-17,
215*25c28e83SPiotr Jasiukajtis 1.48083022782247186733e+00, -9.68695210263061857841e-17,
216*25c28e83SPiotr Jasiukajtis 1.48484516587275239274e+00, 1.07800867644074807559e-16,
217*25c28e83SPiotr Jasiukajtis 1.48887098952439700383e+00, 6.15536715774287133031e-17,
218*25c28e83SPiotr Jasiukajtis 1.49290772829126483501e+00, 1.41929201542840357707e-17,
219*25c28e83SPiotr Jasiukajtis 1.49695541176723545540e+00, -2.86166325389915821109e-17,
220*25c28e83SPiotr Jasiukajtis 1.50101406962642558440e+00, -6.41376727579023503859e-17,
221*25c28e83SPiotr Jasiukajtis 1.50508373162340647333e+00, 7.07471061358284636429e-17,
222*25c28e83SPiotr Jasiukajtis 1.50916442759342284141e+00, -1.01645532775429503911e-16,
223*25c28e83SPiotr Jasiukajtis 1.51325618745260981335e+00, 8.88449785133871209093e-17,
224*25c28e83SPiotr Jasiukajtis 1.51735904119821474190e+00, -4.30869947204334080070e-17,
225*25c28e83SPiotr Jasiukajtis 1.52147301890881458952e+00, -5.99638767594568341985e-18,
226*25c28e83SPiotr Jasiukajtis 1.52559815074453819506e+00, 1.11795187801605698722e-16,
227*25c28e83SPiotr Jasiukajtis 1.52973446694728698603e+00, 3.78579211515721903683e-17,
228*25c28e83SPiotr Jasiukajtis 1.53388199784095591305e+00, 8.87522684443844614135e-17,
229*25c28e83SPiotr Jasiukajtis 1.53804077383165682669e+00, 1.01746723511613580618e-16,
230*25c28e83SPiotr Jasiukajtis 1.54221082540794074411e+00, 7.94983480969762085616e-17,
231*25c28e83SPiotr Jasiukajtis 1.54639218314102144802e+00, 1.06839600056572198028e-16,
232*25c28e83SPiotr Jasiukajtis 1.55058487768499997372e+00, -1.46007065906893851791e-17,
233*25c28e83SPiotr Jasiukajtis 1.55478893977708865215e+00, -8.00316135011603564104e-17,
234*25c28e83SPiotr Jasiukajtis 1.55900440023783692922e+00, 3.78120705335752750188e-17,
235*25c28e83SPiotr Jasiukajtis 1.56323128997135762930e+00, 7.48477764559073438896e-17,
236*25c28e83SPiotr Jasiukajtis 1.56746963996555299659e+00, -1.03520617688497219883e-16,
237*25c28e83SPiotr Jasiukajtis 1.57171948129234140268e+00, -3.34298400468720006928e-17,
238*25c28e83SPiotr Jasiukajtis 1.57598084510788649659e+00, -1.01369164712783039808e-17,
239*25c28e83SPiotr Jasiukajtis 1.58025376265282457844e+00, -5.16340292955446806159e-17,
240*25c28e83SPiotr Jasiukajtis 1.58453826525249374946e+00, -1.93377170345857029304e-17,
241*25c28e83SPiotr Jasiukajtis 1.58883438431716395023e+00, -5.99495011882447940052e-18,
242*25c28e83SPiotr Jasiukajtis 1.59314215134226699888e+00, -1.00944065423119624890e-16,
243*25c28e83SPiotr Jasiukajtis 1.59746159790862707339e+00, 2.48683927962209992069e-17,
244*25c28e83SPiotr Jasiukajtis 1.60179275568269341434e+00, -6.05491745352778434252e-17,
245*25c28e83SPiotr Jasiukajtis 1.60613565641677102924e+00, -1.03545452880599952591e-16,
246*25c28e83SPiotr Jasiukajtis 1.61049033194925428347e+00, 2.47071925697978878522e-17,
247*25c28e83SPiotr Jasiukajtis 1.61485681420486071325e+00, -7.31666339912512326264e-17,
248*25c28e83SPiotr Jasiukajtis 1.61923513519486372836e+00, 2.09413341542290924068e-17,
249*25c28e83SPiotr Jasiukajtis 1.62362532701732886764e+00, -3.58451285141447470996e-17,
250*25c28e83SPiotr Jasiukajtis 1.62802742185734783398e+00, -6.71295508470708408630e-17,
251*25c28e83SPiotr Jasiukajtis 1.63244145198727497181e+00, 9.85281923042999296414e-17,
252*25c28e83SPiotr Jasiukajtis 1.63686744976696441078e+00, 7.69832507131987557450e-17,
253*25c28e83SPiotr Jasiukajtis 1.64130544764400632118e+00, -9.24756873764070550805e-17,
254*25c28e83SPiotr Jasiukajtis 1.64575547815396494578e+00, -1.01256799136747726038e-16,
255*25c28e83SPiotr Jasiukajtis 1.65021757392061774183e+00, 9.13327958872990419009e-18,
256*25c28e83SPiotr Jasiukajtis 1.65469176765619430114e+00, 9.64329430319602742879e-17,
257*25c28e83SPiotr Jasiukajtis 1.65917809216161615815e+00, -7.27554555082304942180e-17,
258*25c28e83SPiotr Jasiukajtis 1.66367658032673637614e+00, 5.89099269671309967045e-17,
259*25c28e83SPiotr Jasiukajtis 1.66818726513058246397e+00, 4.26917801957061447430e-17,
260*25c28e83SPiotr Jasiukajtis 1.67271017964159662839e+00, -5.47671596459956307616e-17,
261*25c28e83SPiotr Jasiukajtis 1.67724535701787846875e+00, 8.30394950995073155275e-17,
262*25c28e83SPiotr Jasiukajtis 1.68179283050742900407e+00, 8.19901002058149652013e-17,
263*25c28e83SPiotr Jasiukajtis 1.68635263344839336774e+00, -7.18146327835800944212e-17,
264*25c28e83SPiotr Jasiukajtis 1.69092479926930527867e+00, -9.66967147439488016590e-17,
265*25c28e83SPiotr Jasiukajtis 1.69550936148933262260e+00, 7.23841687284516664081e-17,
266*25c28e83SPiotr Jasiukajtis 1.70010635371852347753e+00, -8.02371937039770024589e-18,
267*25c28e83SPiotr Jasiukajtis 1.70471580965805125096e+00, -2.72888328479728156257e-17,
268*25c28e83SPiotr Jasiukajtis 1.70933776310046292579e+00, -9.86877945663293107628e-17,
269*25c28e83SPiotr Jasiukajtis 1.71397224792992597386e+00, 6.47397510775336706412e-17,
270*25c28e83SPiotr Jasiukajtis 1.71861929812247793414e+00, -1.85138041826311098821e-17,
271*25c28e83SPiotr Jasiukajtis 1.72327894774627399244e+00, -9.52212380039379996275e-17,
272*25c28e83SPiotr Jasiukajtis 1.72795123096183766975e+00, -1.07509818612046424459e-16,
273*25c28e83SPiotr Jasiukajtis 1.73263618202231106658e+00, -1.69805107431541549407e-18,
274*25c28e83SPiotr Jasiukajtis 1.73733383527370621735e+00, 3.16438929929295694659e-17,
275*25c28e83SPiotr Jasiukajtis 1.74204422515515644498e+00, -1.52595911895078879236e-18,
276*25c28e83SPiotr Jasiukajtis 1.74676738619916904760e+00, -1.07522904835075145042e-16,
277*25c28e83SPiotr Jasiukajtis 1.75150335303187820735e+00, -5.12445042059672465939e-17,
278*25c28e83SPiotr Jasiukajtis 1.75625216037329945351e+00, 2.96014069544887330703e-17,
279*25c28e83SPiotr Jasiukajtis 1.76101384303758390359e+00, -7.94325312503922771057e-17,
280*25c28e83SPiotr Jasiukajtis 1.76578843593327272643e+00, 9.46131501808326786660e-17,
281*25c28e83SPiotr Jasiukajtis 1.77057597406355471392e+00, 5.96179451004055584767e-17,
282*25c28e83SPiotr Jasiukajtis 1.77537649252652118825e+00, 6.42973179655657203396e-17,
283*25c28e83SPiotr Jasiukajtis 1.78019002651542446181e+00, -5.28462728909161736517e-17,
284*25c28e83SPiotr Jasiukajtis 1.78501661131893496481e+00, 1.53304001210313138184e-17,
285*25c28e83SPiotr Jasiukajtis 1.78985628232140103755e+00, -4.15435466068334977098e-17,
286*25c28e83SPiotr Jasiukajtis 1.79470907500310716820e+00, 1.82274584279120867698e-17,
287*25c28e83SPiotr Jasiukajtis 1.79957502494053511732e+00, -2.52688923335889795224e-17,
288*25c28e83SPiotr Jasiukajtis 1.80445416780662393208e+00, -5.17722240879331788328e-17,
289*25c28e83SPiotr Jasiukajtis 1.80934653937103195886e+00, -9.03264140245002968190e-17,
290*25c28e83SPiotr Jasiukajtis 1.81425217550039885595e+00, -9.96953153892034881983e-17,
291*25c28e83SPiotr Jasiukajtis 1.81917111215860849427e+00, 7.40267690114583888997e-17,
292*25c28e83SPiotr Jasiukajtis 1.82410338540705341259e+00, -1.01596278622770830650e-16,
293*25c28e83SPiotr Jasiukajtis 1.82904903140489727420e+00, 6.88919290883569563697e-17,
294*25c28e83SPiotr Jasiukajtis 1.83400808640934243066e+00, 3.28310722424562658722e-17,
295*25c28e83SPiotr Jasiukajtis 1.83898058677589371079e+00, 6.91896974027251194233e-18,
296*25c28e83SPiotr Jasiukajtis 1.84396656895862598446e+00, -5.93974202694996455028e-17,
297*25c28e83SPiotr Jasiukajtis 1.84896606951045083811e+00, 9.02758044626108928816e-17,
298*25c28e83SPiotr Jasiukajtis 1.85397912508338547077e+00, 9.76188749072759353840e-17,
299*25c28e83SPiotr Jasiukajtis 1.85900577242882047990e+00, -9.52870546198994068663e-17,
300*25c28e83SPiotr Jasiukajtis 1.86404604839778897940e+00, 6.54091268062057047791e-17,
301*25c28e83SPiotr Jasiukajtis 1.86909998994123860427e+00, -9.93850521425506708290e-17,
302*25c28e83SPiotr Jasiukajtis 1.87416763411029996256e+00, -6.12276341300414256164e-17,
303*25c28e83SPiotr Jasiukajtis 1.87924901805656019427e+00, -1.62263155578358447799e-17,
304*25c28e83SPiotr Jasiukajtis 1.88434417903233453195e+00, -8.22659312553371090551e-17,
305*25c28e83SPiotr Jasiukajtis 1.88945315439093919352e+00, -9.00516828505912548531e-17,
306*25c28e83SPiotr Jasiukajtis 1.89457598158696560731e+00, 3.40340353521652967060e-17,
307*25c28e83SPiotr Jasiukajtis 1.89971269817655530332e+00, -3.85973976937851370678e-17,
308*25c28e83SPiotr Jasiukajtis 1.90486334181767413831e+00, 6.53385751471827862895e-17,
309*25c28e83SPiotr Jasiukajtis 1.91002795027038985154e+00, -5.90968800674406023686e-17,
310*25c28e83SPiotr Jasiukajtis 1.91520656139714740007e+00, -1.06199460561959626376e-16,
311*25c28e83SPiotr Jasiukajtis 1.92039921316304740273e+00, 7.11668154063031418621e-17,
312*25c28e83SPiotr Jasiukajtis 1.92560594363612502811e+00, -9.91496376969374092749e-17,
313*25c28e83SPiotr Jasiukajtis 1.93082679098762710623e+00, 6.16714970616910955284e-17,
314*25c28e83SPiotr Jasiukajtis 1.93606179349229434727e+00, 1.03323859606763257448e-16,
315*25c28e83SPiotr Jasiukajtis 1.94131098952864045160e+00, -6.63802989162148798984e-17,
316*25c28e83SPiotr Jasiukajtis 1.94657441757923321823e+00, 6.81102234953387718436e-17,
317*25c28e83SPiotr Jasiukajtis 1.95185211623097831790e+00, -2.19901696997935108603e-17,
318*25c28e83SPiotr Jasiukajtis 1.95714412417540017941e+00, 8.96076779103666776760e-17,
319*25c28e83SPiotr Jasiukajtis 1.96245048020892731699e+00, 1.09768440009135469493e-16,
320*25c28e83SPiotr Jasiukajtis 1.96777122323317588126e+00, -1.03149280115311315109e-16,
321*25c28e83SPiotr Jasiukajtis 1.97310639225523432039e+00, -7.45161786395603748608e-18,
322*25c28e83SPiotr Jasiukajtis 1.97845602638795092787e+00, 4.03887531092781665750e-17,
323*25c28e83SPiotr Jasiukajtis 1.98382016485021939189e+00, -2.20345441239106265716e-17,
324*25c28e83SPiotr Jasiukajtis 1.98919884696726634310e+00, 8.20513263836919941553e-18,
325*25c28e83SPiotr Jasiukajtis 1.99459211217094023461e+00, 1.79097103520026450854e-17
326*25c28e83SPiotr Jasiukajtis };
327*25c28e83SPiotr Jasiukajtis
328*25c28e83SPiotr Jasiukajtis static const union {
329*25c28e83SPiotr Jasiukajtis unsigned i[2];
330*25c28e83SPiotr Jasiukajtis double d;
331*25c28e83SPiotr Jasiukajtis } C[] = {
332*25c28e83SPiotr Jasiukajtis { DBLWORD(0x43380000, 0x00000000) },
333*25c28e83SPiotr Jasiukajtis { DBLWORD(0x40771547, 0x652b82fe) },
334*25c28e83SPiotr Jasiukajtis { DBLWORD(0x3f662e42, 0xfee00000) },
335*25c28e83SPiotr Jasiukajtis { DBLWORD(0x3d6a39ef, 0x35793c76) },
336*25c28e83SPiotr Jasiukajtis { DBLWORD(0x3ff00000, 0x00000000) },
337*25c28e83SPiotr Jasiukajtis { DBLWORD(0x3fdfffff, 0xfffffff6) },
338*25c28e83SPiotr Jasiukajtis { DBLWORD(0x3fc55555, 0x721a1d14) },
339*25c28e83SPiotr Jasiukajtis { DBLWORD(0x3fa55555, 0x6e0896af) },
340*25c28e83SPiotr Jasiukajtis { DBLWORD(0x01000000, 0x00000000) },
341*25c28e83SPiotr Jasiukajtis { DBLWORD(0x7f000000, 0x00000000) },
342*25c28e83SPiotr Jasiukajtis { DBLWORD(0x40862e42, 0xfefa39ef) },
343*25c28e83SPiotr Jasiukajtis { DBLWORD(0xc0874910, 0xd52d3051) },
344*25c28e83SPiotr Jasiukajtis { DBLWORD(0xfff00000, 0x00000000) },
345*25c28e83SPiotr Jasiukajtis { DBLWORD(0x00000000, 0x00000000) }
346*25c28e83SPiotr Jasiukajtis };
347*25c28e83SPiotr Jasiukajtis
348*25c28e83SPiotr Jasiukajtis #define round C[0].d
349*25c28e83SPiotr Jasiukajtis #define invln2_256 C[1].d
350*25c28e83SPiotr Jasiukajtis #define ln2_256h C[2].d
351*25c28e83SPiotr Jasiukajtis #define ln2_256l C[3].d
352*25c28e83SPiotr Jasiukajtis #define one C[4].d
353*25c28e83SPiotr Jasiukajtis #define B1 C[5].d
354*25c28e83SPiotr Jasiukajtis #define B2 C[6].d
355*25c28e83SPiotr Jasiukajtis #define B3 C[7].d
356*25c28e83SPiotr Jasiukajtis #define tiny C[8].d
357*25c28e83SPiotr Jasiukajtis #define huge C[9].d
358*25c28e83SPiotr Jasiukajtis #define othresh C[10].d
359*25c28e83SPiotr Jasiukajtis #define uthresh C[11].d
360*25c28e83SPiotr Jasiukajtis #define neginf C[12].d
361*25c28e83SPiotr Jasiukajtis #define zero C[13].d
362*25c28e83SPiotr Jasiukajtis
363*25c28e83SPiotr Jasiukajtis #define PROCESS(N) \
364*25c28e83SPiotr Jasiukajtis y##N = (x##N * invln2_256) + round; \
365*25c28e83SPiotr Jasiukajtis j##N = LO(y##N); \
366*25c28e83SPiotr Jasiukajtis y##N -= round; \
367*25c28e83SPiotr Jasiukajtis k##N = j##N >> 8; \
368*25c28e83SPiotr Jasiukajtis j##N = (j##N & 0xff) << 1; \
369*25c28e83SPiotr Jasiukajtis x##N = (x##N - y##N * ln2_256h) - y##N * ln2_256l; \
370*25c28e83SPiotr Jasiukajtis y##N = x##N * (one + x##N * (B1 + x##N * (B2 + x##N * B3))); \
371*25c28e83SPiotr Jasiukajtis t##N = TBL[j##N]; \
372*25c28e83SPiotr Jasiukajtis y##N = t##N + (TBL[j##N + 1] + t##N * y##N); \
373*25c28e83SPiotr Jasiukajtis if (k##N < -1021) { \
374*25c28e83SPiotr Jasiukajtis HI(y##N) += (k##N + 0x3ef) << 20; \
375*25c28e83SPiotr Jasiukajtis y##N *= tiny; \
376*25c28e83SPiotr Jasiukajtis } else { \
377*25c28e83SPiotr Jasiukajtis HI(y##N) += k##N << 20; \
378*25c28e83SPiotr Jasiukajtis } \
379*25c28e83SPiotr Jasiukajtis *y = y##N; \
380*25c28e83SPiotr Jasiukajtis y += stridey
381*25c28e83SPiotr Jasiukajtis
382*25c28e83SPiotr Jasiukajtis #define PREPROCESS(N, index, label) \
383*25c28e83SPiotr Jasiukajtis hx = HI(x[0]); \
384*25c28e83SPiotr Jasiukajtis ix = hx & ~0x80000000; \
385*25c28e83SPiotr Jasiukajtis x##N = *x; \
386*25c28e83SPiotr Jasiukajtis x += stridex; \
387*25c28e83SPiotr Jasiukajtis if (ix >= 0x40862e42) { \
388*25c28e83SPiotr Jasiukajtis if (ix >= 0x7ff00000) { /* x is inf or nan */ \
389*25c28e83SPiotr Jasiukajtis y[index] = (x##N == neginf)? zero : \
390*25c28e83SPiotr Jasiukajtis x##N * x##N; \
391*25c28e83SPiotr Jasiukajtis goto label; \
392*25c28e83SPiotr Jasiukajtis } \
393*25c28e83SPiotr Jasiukajtis if (x##N > othresh) { \
394*25c28e83SPiotr Jasiukajtis y[index] = huge * huge; \
395*25c28e83SPiotr Jasiukajtis goto label; \
396*25c28e83SPiotr Jasiukajtis } \
397*25c28e83SPiotr Jasiukajtis if (x##N < uthresh) { \
398*25c28e83SPiotr Jasiukajtis y[index] = tiny * tiny; \
399*25c28e83SPiotr Jasiukajtis goto label; \
400*25c28e83SPiotr Jasiukajtis } \
401*25c28e83SPiotr Jasiukajtis } else if (ix < 0x3e300000) { /* |x| < 2^-28 */ \
402*25c28e83SPiotr Jasiukajtis y[index] = one + x##N; \
403*25c28e83SPiotr Jasiukajtis goto label; \
404*25c28e83SPiotr Jasiukajtis }
405*25c28e83SPiotr Jasiukajtis
406*25c28e83SPiotr Jasiukajtis void
__vexp(int n,double * restrict x,int stridex,double * restrict y,int stridey)407*25c28e83SPiotr Jasiukajtis __vexp(int n, double *restrict x, int stridex, double *restrict y,
408*25c28e83SPiotr Jasiukajtis int stridey)
409*25c28e83SPiotr Jasiukajtis {
410*25c28e83SPiotr Jasiukajtis double x0, x1, x2, x3, x4, x5;
411*25c28e83SPiotr Jasiukajtis double y0, y1, y2, y3, y4, y5;
412*25c28e83SPiotr Jasiukajtis double t0, t1, t2, t3, t4, t5;
413*25c28e83SPiotr Jasiukajtis int k0, k1, k2, k3, k4, k5;
414*25c28e83SPiotr Jasiukajtis int j0, j1, j2, j3, j4, j5;
415*25c28e83SPiotr Jasiukajtis int hx, ix;
416*25c28e83SPiotr Jasiukajtis
417*25c28e83SPiotr Jasiukajtis y -= stridey;
418*25c28e83SPiotr Jasiukajtis
419*25c28e83SPiotr Jasiukajtis for (;;) {
420*25c28e83SPiotr Jasiukajtis begin:
421*25c28e83SPiotr Jasiukajtis if (--n < 0)
422*25c28e83SPiotr Jasiukajtis break;
423*25c28e83SPiotr Jasiukajtis y += stridey;
424*25c28e83SPiotr Jasiukajtis
425*25c28e83SPiotr Jasiukajtis PREPROCESS(0, 0, begin);
426*25c28e83SPiotr Jasiukajtis
427*25c28e83SPiotr Jasiukajtis if (--n < 0)
428*25c28e83SPiotr Jasiukajtis goto process1;
429*25c28e83SPiotr Jasiukajtis
430*25c28e83SPiotr Jasiukajtis PREPROCESS(1, stridey, process1);
431*25c28e83SPiotr Jasiukajtis
432*25c28e83SPiotr Jasiukajtis if (--n < 0)
433*25c28e83SPiotr Jasiukajtis goto process2;
434*25c28e83SPiotr Jasiukajtis
435*25c28e83SPiotr Jasiukajtis PREPROCESS(2, stridey << 1, process2);
436*25c28e83SPiotr Jasiukajtis
437*25c28e83SPiotr Jasiukajtis if (--n < 0)
438*25c28e83SPiotr Jasiukajtis goto process3;
439*25c28e83SPiotr Jasiukajtis
440*25c28e83SPiotr Jasiukajtis PREPROCESS(3, (stridey << 1) + stridey, process3);
441*25c28e83SPiotr Jasiukajtis
442*25c28e83SPiotr Jasiukajtis if (--n < 0)
443*25c28e83SPiotr Jasiukajtis goto process4;
444*25c28e83SPiotr Jasiukajtis
445*25c28e83SPiotr Jasiukajtis PREPROCESS(4, stridey << 2, process4);
446*25c28e83SPiotr Jasiukajtis
447*25c28e83SPiotr Jasiukajtis if (--n < 0)
448*25c28e83SPiotr Jasiukajtis goto process5;
449*25c28e83SPiotr Jasiukajtis
450*25c28e83SPiotr Jasiukajtis PREPROCESS(5, (stridey << 2) + stridey, process5);
451*25c28e83SPiotr Jasiukajtis
452*25c28e83SPiotr Jasiukajtis y0 = (x0 * invln2_256) + round;
453*25c28e83SPiotr Jasiukajtis y1 = (x1 * invln2_256) + round;
454*25c28e83SPiotr Jasiukajtis y2 = (x2 * invln2_256) + round;
455*25c28e83SPiotr Jasiukajtis y3 = (x3 * invln2_256) + round;
456*25c28e83SPiotr Jasiukajtis y4 = (x4 * invln2_256) + round;
457*25c28e83SPiotr Jasiukajtis y5 = (x5 * invln2_256) + round;
458*25c28e83SPiotr Jasiukajtis
459*25c28e83SPiotr Jasiukajtis j0 = LO(y0);
460*25c28e83SPiotr Jasiukajtis j1 = LO(y1);
461*25c28e83SPiotr Jasiukajtis j2 = LO(y2);
462*25c28e83SPiotr Jasiukajtis j3 = LO(y3);
463*25c28e83SPiotr Jasiukajtis j4 = LO(y4);
464*25c28e83SPiotr Jasiukajtis j5 = LO(y5);
465*25c28e83SPiotr Jasiukajtis
466*25c28e83SPiotr Jasiukajtis y0 -= round;
467*25c28e83SPiotr Jasiukajtis y1 -= round;
468*25c28e83SPiotr Jasiukajtis y2 -= round;
469*25c28e83SPiotr Jasiukajtis y3 -= round;
470*25c28e83SPiotr Jasiukajtis y4 -= round;
471*25c28e83SPiotr Jasiukajtis y5 -= round;
472*25c28e83SPiotr Jasiukajtis
473*25c28e83SPiotr Jasiukajtis k0 = j0 >> 8;
474*25c28e83SPiotr Jasiukajtis k1 = j1 >> 8;
475*25c28e83SPiotr Jasiukajtis k2 = j2 >> 8;
476*25c28e83SPiotr Jasiukajtis k3 = j3 >> 8;
477*25c28e83SPiotr Jasiukajtis k4 = j4 >> 8;
478*25c28e83SPiotr Jasiukajtis k5 = j5 >> 8;
479*25c28e83SPiotr Jasiukajtis
480*25c28e83SPiotr Jasiukajtis j0 = (j0 & 0xff) << 1;
481*25c28e83SPiotr Jasiukajtis j1 = (j1 & 0xff) << 1;
482*25c28e83SPiotr Jasiukajtis j2 = (j2 & 0xff) << 1;
483*25c28e83SPiotr Jasiukajtis j3 = (j3 & 0xff) << 1;
484*25c28e83SPiotr Jasiukajtis j4 = (j4 & 0xff) << 1;
485*25c28e83SPiotr Jasiukajtis j5 = (j5 & 0xff) << 1;
486*25c28e83SPiotr Jasiukajtis
487*25c28e83SPiotr Jasiukajtis x0 = (x0 - y0 * ln2_256h) - y0 * ln2_256l;
488*25c28e83SPiotr Jasiukajtis x1 = (x1 - y1 * ln2_256h) - y1 * ln2_256l;
489*25c28e83SPiotr Jasiukajtis x2 = (x2 - y2 * ln2_256h) - y2 * ln2_256l;
490*25c28e83SPiotr Jasiukajtis x3 = (x3 - y3 * ln2_256h) - y3 * ln2_256l;
491*25c28e83SPiotr Jasiukajtis x4 = (x4 - y4 * ln2_256h) - y4 * ln2_256l;
492*25c28e83SPiotr Jasiukajtis x5 = (x5 - y5 * ln2_256h) - y5 * ln2_256l;
493*25c28e83SPiotr Jasiukajtis
494*25c28e83SPiotr Jasiukajtis y0 = x0 * (one + x0 * (B1 + x0 * (B2 + x0 * B3)));
495*25c28e83SPiotr Jasiukajtis y1 = x1 * (one + x1 * (B1 + x1 * (B2 + x1 * B3)));
496*25c28e83SPiotr Jasiukajtis y2 = x2 * (one + x2 * (B1 + x2 * (B2 + x2 * B3)));
497*25c28e83SPiotr Jasiukajtis y3 = x3 * (one + x3 * (B1 + x3 * (B2 + x3 * B3)));
498*25c28e83SPiotr Jasiukajtis y4 = x4 * (one + x4 * (B1 + x4 * (B2 + x4 * B3)));
499*25c28e83SPiotr Jasiukajtis y5 = x5 * (one + x5 * (B1 + x5 * (B2 + x5 * B3)));
500*25c28e83SPiotr Jasiukajtis
501*25c28e83SPiotr Jasiukajtis t0 = TBL[j0];
502*25c28e83SPiotr Jasiukajtis t1 = TBL[j1];
503*25c28e83SPiotr Jasiukajtis t2 = TBL[j2];
504*25c28e83SPiotr Jasiukajtis t3 = TBL[j3];
505*25c28e83SPiotr Jasiukajtis t4 = TBL[j4];
506*25c28e83SPiotr Jasiukajtis t5 = TBL[j5];
507*25c28e83SPiotr Jasiukajtis
508*25c28e83SPiotr Jasiukajtis y0 = t0 + (TBL[j0 + 1] + t0 * y0);
509*25c28e83SPiotr Jasiukajtis y1 = t1 + (TBL[j1 + 1] + t1 * y1);
510*25c28e83SPiotr Jasiukajtis y2 = t2 + (TBL[j2 + 1] + t2 * y2);
511*25c28e83SPiotr Jasiukajtis y3 = t3 + (TBL[j3 + 1] + t3 * y3);
512*25c28e83SPiotr Jasiukajtis y4 = t4 + (TBL[j4 + 1] + t4 * y4);
513*25c28e83SPiotr Jasiukajtis y5 = t5 + (TBL[j5 + 1] + t5 * y5);
514*25c28e83SPiotr Jasiukajtis
515*25c28e83SPiotr Jasiukajtis if (k0 < -1021) {
516*25c28e83SPiotr Jasiukajtis HI(y0) += (k0 + 0x3ef) << 20;
517*25c28e83SPiotr Jasiukajtis y0 *= tiny;
518*25c28e83SPiotr Jasiukajtis } else {
519*25c28e83SPiotr Jasiukajtis HI(y0) += k0 << 20;
520*25c28e83SPiotr Jasiukajtis }
521*25c28e83SPiotr Jasiukajtis if (k1 < -1021) {
522*25c28e83SPiotr Jasiukajtis HI(y1) += (k1 + 0x3ef) << 20;
523*25c28e83SPiotr Jasiukajtis y1 *= tiny;
524*25c28e83SPiotr Jasiukajtis } else {
525*25c28e83SPiotr Jasiukajtis HI(y1) += k1 << 20;
526*25c28e83SPiotr Jasiukajtis }
527*25c28e83SPiotr Jasiukajtis if (k2 < -1021) {
528*25c28e83SPiotr Jasiukajtis HI(y2) += (k2 + 0x3ef) << 20;
529*25c28e83SPiotr Jasiukajtis y2 *= tiny;
530*25c28e83SPiotr Jasiukajtis } else {
531*25c28e83SPiotr Jasiukajtis HI(y2) += k2 << 20;
532*25c28e83SPiotr Jasiukajtis }
533*25c28e83SPiotr Jasiukajtis if (k3 < -1021) {
534*25c28e83SPiotr Jasiukajtis HI(y3) += (k3 + 0x3ef) << 20;
535*25c28e83SPiotr Jasiukajtis y3 *= tiny;
536*25c28e83SPiotr Jasiukajtis } else {
537*25c28e83SPiotr Jasiukajtis HI(y3) += k3 << 20;
538*25c28e83SPiotr Jasiukajtis }
539*25c28e83SPiotr Jasiukajtis if (k4 < -1021) {
540*25c28e83SPiotr Jasiukajtis HI(y4) += (k4 + 0x3ef) << 20;
541*25c28e83SPiotr Jasiukajtis y4 *= tiny;
542*25c28e83SPiotr Jasiukajtis } else {
543*25c28e83SPiotr Jasiukajtis HI(y4) += k4 << 20;
544*25c28e83SPiotr Jasiukajtis }
545*25c28e83SPiotr Jasiukajtis if (k5 < -1021) {
546*25c28e83SPiotr Jasiukajtis HI(y5) += (k5 + 0x3ef) << 20;
547*25c28e83SPiotr Jasiukajtis y5 *= tiny;
548*25c28e83SPiotr Jasiukajtis } else {
549*25c28e83SPiotr Jasiukajtis HI(y5) += k5 << 20;
550*25c28e83SPiotr Jasiukajtis }
551*25c28e83SPiotr Jasiukajtis
552*25c28e83SPiotr Jasiukajtis y[0] = y0;
553*25c28e83SPiotr Jasiukajtis y[stridey] = y1;
554*25c28e83SPiotr Jasiukajtis y[stridey << 1] = y2;
555*25c28e83SPiotr Jasiukajtis y[(stridey << 1) + stridey] = y3;
556*25c28e83SPiotr Jasiukajtis y[stridey << 2] = y4;
557*25c28e83SPiotr Jasiukajtis y[(stridey << 2) + stridey] = y5;
558*25c28e83SPiotr Jasiukajtis y += (stridey << 2) + stridey;
559*25c28e83SPiotr Jasiukajtis continue;
560*25c28e83SPiotr Jasiukajtis
561*25c28e83SPiotr Jasiukajtis process1:
562*25c28e83SPiotr Jasiukajtis PROCESS(0);
563*25c28e83SPiotr Jasiukajtis continue;
564*25c28e83SPiotr Jasiukajtis
565*25c28e83SPiotr Jasiukajtis process2:
566*25c28e83SPiotr Jasiukajtis PROCESS(0);
567*25c28e83SPiotr Jasiukajtis PROCESS(1);
568*25c28e83SPiotr Jasiukajtis continue;
569*25c28e83SPiotr Jasiukajtis
570*25c28e83SPiotr Jasiukajtis process3:
571*25c28e83SPiotr Jasiukajtis PROCESS(0);
572*25c28e83SPiotr Jasiukajtis PROCESS(1);
573*25c28e83SPiotr Jasiukajtis PROCESS(2);
574*25c28e83SPiotr Jasiukajtis continue;
575*25c28e83SPiotr Jasiukajtis
576*25c28e83SPiotr Jasiukajtis process4:
577*25c28e83SPiotr Jasiukajtis PROCESS(0);
578*25c28e83SPiotr Jasiukajtis PROCESS(1);
579*25c28e83SPiotr Jasiukajtis PROCESS(2);
580*25c28e83SPiotr Jasiukajtis PROCESS(3);
581*25c28e83SPiotr Jasiukajtis continue;
582*25c28e83SPiotr Jasiukajtis
583*25c28e83SPiotr Jasiukajtis process5:
584*25c28e83SPiotr Jasiukajtis PROCESS(0);
585*25c28e83SPiotr Jasiukajtis PROCESS(1);
586*25c28e83SPiotr Jasiukajtis PROCESS(2);
587*25c28e83SPiotr Jasiukajtis PROCESS(3);
588*25c28e83SPiotr Jasiukajtis PROCESS(4);
589*25c28e83SPiotr Jasiukajtis }
590*25c28e83SPiotr Jasiukajtis }
591