Changeset a5af4e1 in sasmodels for sasmodels/models/lib/j1_cephes.c
- Timestamp:
- Mar 18, 2016 8:39:55 AM (8 years ago)
- Branches:
- master, core_shell_microgels, costrafo411, magnetic_model, release_v0.94, release_v0.95, ticket-1257-vesicle-product, ticket_1156, ticket_1265_superball, ticket_822_more_unit_tests
- Children:
- 7904790
- Parents:
- c094758
- File:
-
- 1 edited
Legend:
- Unmodified
- Added
- Removed
-
sasmodels/models/lib/j1_cephes.c
re2af2a9 ra5af4e1 39 39 Copyright 1984, 1987, 1989, 2000 by Stephen L. Moshier 40 40 */ 41 double j1(double );41 double J1(double ); 42 42 43 double j1(double x) {43 double J1(double x) { 44 44 45 45 //Cephes double pression function … … 48 48 double w, z, p, q, xn; 49 49 50 const double DR1 = 5.78318596294678452118E0;51 const double DR2 = 3.04712623436620863991E1;52 50 const double Z1 = 1.46819706421238932572E1; 53 51 const double Z2 = 4.92184563216946036703E1; 54 52 const double THPIO4 = 2.35619449019234492885; 55 53 const double SQ2OPI = 0.79788456080286535588; 56 57 double RP[8] = {58 -8.99971225705559398224E8,59 4.52228297998194034323E11,60 -7.27494245221818276015E13,61 3.68295732863852883286E15,62 0.0,63 0.0,64 0.0,65 0.066 };67 68 double RQ[8] = {69 /* 1.00000000000000000000E0,*/70 6.20836478118054335476E2,71 2.56987256757748830383E5,72 8.35146791431949253037E7,73 2.21511595479792499675E10,74 4.74914122079991414898E12,75 7.84369607876235854894E14,76 8.95222336184627338078E16,77 5.32278620332680085395E18,78 };79 80 double PP[8] = {81 7.62125616208173112003E-4,82 7.31397056940917570436E-2,83 1.12719608129684925192E0,84 5.11207951146807644818E0,85 8.42404590141772420927E0,86 5.21451598682361504063E0,87 1.00000000000000000254E0,88 0.0,89 };90 double PQ[8] = {91 5.71323128072548699714E-4,92 6.88455908754495404082E-2,93 1.10514232634061696926E0,94 5.07386386128601488557E0,95 8.39985554327604159757E0,96 5.20982848682361821619E0,97 9.99999999999999997461E-1,98 0.0,99 };100 101 double QP[8] = {102 5.10862594750176621635E-2,103 4.98213872951233449420E0,104 7.58238284132545283818E1,105 3.66779609360150777800E2,106 7.10856304998926107277E2,107 5.97489612400613639965E2,108 2.11688757100572135698E2,109 2.52070205858023719784E1,110 };111 112 double QQ[8] = {113 /* 1.00000000000000000000E0,*/114 7.42373277035675149943E1,115 1.05644886038262816351E3,116 4.98641058337653607651E3,117 9.56231892404756170795E3,118 7.99704160447350683650E3,119 2.82619278517639096600E3,120 3.36093607810698293419E2,121 0.0,122 };123 54 124 55 w = x; … … 129 60 { 130 61 z = x * x; 131 w = polevl ( z, RP, 3 ) / p1evl( z, RQ, 8 );62 w = polevlRP( z, 3 ) / p1evlRQ( z, 8 ); 132 63 w = w * x * (z - Z1) * (z - Z2); 133 64 return( w ); … … 136 67 w = 5.0/x; 137 68 z = w * w; 138 p = polevl( z, PP, 6)/polevl( z, PQ, 6 ); 139 q = polevl( z, QP, 7)/p1evl( z, QQ, 7 ); 69 70 p = polevlPP( z, 6)/polevlPQ( z, 6 ); 71 q = polevlQP( z, 7)/p1evlQQ( z, 7 ); 72 140 73 xn = x - THPIO4; 141 74 … … 155 88 156 89 157 double JP[8] = {158 -4.878788132172128E-009,159 6.009061827883699E-007,160 -4.541343896997497E-005,161 1.937383947804541E-003,162 -3.405537384615824E-002,163 0.0,164 0.0,165 0.0166 };167 168 double MO1[8] = {169 6.913942741265801E-002,170 -2.284801500053359E-001,171 3.138238455499697E-001,172 -2.102302420403875E-001,173 5.435364690523026E-003,174 1.493389585089498E-001,175 4.976029650847191E-006,176 7.978845453073848E-001177 };178 179 double PH1[8] = {180 -4.497014141919556E+001,181 5.073465654089319E+001,182 -2.485774108720340E+001,183 7.222973196770240E+000,184 -1.544842782180211E+000,185 3.503787691653334E-001,186 -1.637986776941202E-001,187 3.749989509080821E-001188 };189 190 90 xx = x; 191 91 if( xx < 0 ) … … 195 95 { 196 96 z = xx * xx; 197 p = (z-Z1) * xx * polevl ( z, JP, 4 );97 p = (z-Z1) * xx * polevlJP( z, 4 ); 198 98 return( p ); 199 99 } … … 202 102 w = sqrt(q); 203 103 204 p = w * polevl ( q, MO1, 7);104 p = w * polevlMO1( q, 7); 205 105 w = q*q; 206 xn = q * polevl ( w, PH1, 7) - THPIO4F;106 xn = q * polevlPH1( w, 7) - THPIO4F; 207 107 p = p * cos(xn + xx); 208 108 … … 210 110 #endif 211 111 } 212
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