#include "erfa.h"
#include "erfam.h"
#include <stdlib.h>

void eraMoon98 ( double date1, double date2, double pv[2][3] )
/*
**  - - - - - - - - - -
**   e r a M o o n 9 8
**  - - - - - - - - - -
**
**  Approximate geocentric position and velocity of the Moon.
**
**  n.b. Not IAU-endorsed and without canonical status.
**
**  Given:
**     date1  double         TT date part A (Notes 1,4)
**     date2  double         TT date part B (Notes 1,4)
**
**  Returned:
**     pv     double[2][3]   Moon p,v, GCRS (AU, AU/d, Note 5)
**
**  Notes:
**
**  1) The TT date date1+date2 is a Julian Date, apportioned in any
**     convenient way between the two arguments.  For example,
**     JD(TT)=2450123.7 could be expressed in any of these ways, among
**     others:
**
**            date1          date2
**
**         2450123.7           0.0       (JD method)
**         2451545.0       -1421.3       (J2000 method)
**         2400000.5       50123.2       (MJD method)
**         2450123.5           0.2       (date & time method)
**
**     The JD method is the most natural and convenient to use in cases
**     where the loss of several decimal digits of resolution is
**     acceptable.  The J2000 method is best matched to the way the
**     argument is handled internally and will deliver the optimum
**     resolution.  The MJD method and the date & time methods are both
**     good compromises between resolution and convenience.  The limited
**     accuracy of the present algorithm is such that any of the methods
**     is satisfactory.
**
**  2) This function is a full implementation of the algorithm
**     published by Meeus (see reference) except that the light-time
**     correction to the Moon's mean longitude has been omitted.
**
**  3) Comparisons with ELP/MPP02 over the interval 1950-2100 gave RMS
**     errors of 2.9 arcsec in geocentric direction, 6.1 km in position
**     and 36 mm/s in velocity.  The worst case errors were 18.3 arcsec
**     in geocentric direction, 31.7 km in position and 172 mm/s in
**     velocity.
**
**  4) The original algorithm is expressed in terms of "dynamical time",
**     which can either be TDB or TT without any significant change in
**     accuracy.  UT cannot be used without incurring significant errors
**     (30 arcsec in the present era) due to the Moon's 0.5 arcsec/sec
**     movement.
**
**  5) The result is with respect to the GCRS (the same as J2000.0 mean
**     equator and equinox to within 23 mas).
**
**  6) Velocity is obtained by a complete analytical differentiation
**     of the Meeus model.
**
**  7) The Meeus algorithm generates position and velocity in mean
**     ecliptic coordinates of date, which the present function then
**     rotates into GCRS.  Because the ecliptic system is precessing,
**     there is a coupling between this spin (about 1.4 degrees per
**     century) and the Moon position that produces a small velocity
**     contribution.  In the present function this effect is neglected
**     as it corresponds to a maximum difference of less than 3 mm/s and
**     increases the RMS error by only 0.4%.
**
**  References:
**
**     Meeus, J., Astronomical Algorithms, 2nd edition, Willmann-Bell,
**     1998, p337.
**
**     Simon, J.L., Bretagnon, P., Chapront, J., Chapront-Touze, M.,
**     Francou, G. & Laskar, J., Astron.Astrophys., 1994, 282, 663
**
**  Defined in erfam.h:
**     ERFA_DAU           astronomical unit (m)
**     ERFA_DJC           days per Julian century
**     ERFA_DJ00          reference epoch (J2000.0), Julian Date
**     ERFA_DD2R          degrees to radians
**
**  Called:
**     eraS2pv      spherical coordinates to pv-vector
**     eraPfw06     bias-precession F-W angles, IAU 2006
**     eraIr        initialize r-matrix to identity
**     eraRz        rotate around Z-axis
**     eraRx        rotate around X-axis
**     eraRxpv      product of r-matrix and pv-vector
**
**  This revision:  2021 May 11
**
**  Copyright (C) 2013-2021, NumFOCUS Foundation.
**  Derived, with permission, from the SOFA library.  See notes at end of file.
*/
{
/*
**  Coefficients for fundamental arguments:
**
**  . Powers of time in Julian centuries
**  . Units are degrees.
*/

/* Moon's mean longitude (wrt mean equinox and ecliptic of date) */
   static double elp0 = 218.31665436,        /* Simon et al. (1994). */
                 elp1 = 481267.88123421,
                 elp2 = -0.0015786,
                 elp3 = 1.0 / 538841.0,
                 elp4 = -1.0 / 65194000.0;
   double elp, delp;

/* Moon's mean elongation */
   static double d0 = 297.8501921,
                 d1 = 445267.1114034,
                 d2 = -0.0018819,
                 d3 = 1.0 / 545868.0,
                 d4 = 1.0 / 113065000.0;
   double d, dd;

/* Sun's mean anomaly */
   static double em0 = 357.5291092,
                 em1 = 35999.0502909,
                 em2 = -0.0001536,
                 em3 = 1.0 / 24490000.0,
                 em4 = 0.0;
   double em, dem;

/* Moon's mean anomaly */
   static double emp0 = 134.9633964,
                 emp1 = 477198.8675055,
                 emp2 = 0.0087414,
                 emp3 = 1.0 / 69699.0,
                 emp4 = -1.0 / 14712000.0;
   double emp, demp;

/* Mean distance of the Moon from its ascending node */
   static double f0 = 93.2720950,
                 f1 = 483202.0175233,
                 f2 = -0.0036539,
                 f3 = 1.0 / 3526000.0,
                 f4 = 1.0 / 863310000.0;
   double f, df;

/*
** Other arguments
*/

/* Meeus A_1, due to Venus (deg) */
   static double a10 = 119.75,
                 a11 = 131.849;
   double a1, da1;

/* Meeus A_2, due to Jupiter (deg) */
   static double a20 = 53.09,
                 a21 = 479264.290;
   double a2, da2;

/* Meeus A_3, due to sidereal motion of the Moon in longitude (deg) */
   static double a30 = 313.45,
                 a31 = 481266.484;
   double a3, da3;

/* Coefficients for Meeus "additive terms" (deg) */
   static double al1 =  0.003958,
                 al2 =  0.001962,
                 al3 =  0.000318;
   static double ab1 = -0.002235,
                 ab2 =  0.000382,
                 ab3 =  0.000175,
                 ab4 =  0.000175,
                 ab5 =  0.000127,
                 ab6 = -0.000115;

/* Fixed term in distance (m) */
   static double r0 = 385000560.0;

/* Coefficients for (dimensionless) E factor */
   static double e1 = -0.002516,
                 e2 = -0.0000074;
   double e, de, esq, desq;

/*
** Coefficients for Moon longitude and distance series
*/
   struct termlr {
      int nd;           /* multiple of D  in argument           */
      int nem;          /*     "    "  M   "    "               */
      int nemp;         /*     "    "  M'  "    "               */
      int nf;           /*     "    "  F   "    "               */
      double coefl;     /* coefficient of L sine argument (deg) */
      double coefr;     /* coefficient of R cosine argument (m) */
   };

static struct termlr tlr[] = {{0,  0,  1,  0,  6.288774, -20905355.0},
                              {2,  0, -1,  0,  1.274027,  -3699111.0},
                              {2,  0,  0,  0,  0.658314,  -2955968.0},
                              {0,  0,  2,  0,  0.213618,   -569925.0},
                              {0,  1,  0,  0, -0.185116,     48888.0},
                              {0,  0,  0,  2, -0.114332,     -3149.0},
                              {2,  0, -2,  0,  0.058793,    246158.0},
                              {2, -1, -1,  0,  0.057066,   -152138.0},
                              {2,  0,  1,  0,  0.053322,   -170733.0},
                              {2, -1,  0,  0,  0.045758,   -204586.0},
                              {0,  1, -1,  0, -0.040923,   -129620.0},
                              {1,  0,  0,  0, -0.034720,    108743.0},
                              {0,  1,  1,  0, -0.030383,    104755.0},
                              {2,  0,  0, -2,  0.015327,     10321.0},
                              {0,  0,  1,  2, -0.012528,         0.0},
                              {0,  0,  1, -2,  0.010980,     79661.0},
                              {4,  0, -1,  0,  0.010675,    -34782.0},
                              {0,  0,  3,  0,  0.010034,    -23210.0},
                              {4,  0, -2,  0,  0.008548,    -21636.0},
                              {2,  1, -1,  0, -0.007888,     24208.0},
                              {2,  1,  0,  0, -0.006766,     30824.0},
                              {1,  0, -1,  0, -0.005163,     -8379.0},
                              {1,  1,  0,  0,  0.004987,    -16675.0},
                              {2, -1,  1,  0,  0.004036,    -12831.0},
                              {2,  0,  2,  0,  0.003994,    -10445.0},
                              {4,  0,  0,  0,  0.003861,    -11650.0},
                              {2,  0, -3,  0,  0.003665,     14403.0},
                              {0,  1, -2,  0, -0.002689,     -7003.0},
                              {2,  0, -1,  2, -0.002602,         0.0},
                              {2, -1, -2,  0,  0.002390,     10056.0},
                              {1,  0,  1,  0, -0.002348,      6322.0},
                              {2, -2,  0,  0,  0.002236,     -9884.0},
                              {0,  1,  2,  0, -0.002120,      5751.0},
                              {0,  2,  0,  0, -0.002069,         0.0},
                              {2, -2, -1,  0,  0.002048,     -4950.0},
                              {2,  0,  1, -2, -0.001773,      4130.0},
                              {2,  0,  0,  2, -0.001595,         0.0},
                              {4, -1, -1,  0,  0.001215,     -3958.0},
                              {0,  0,  2,  2, -0.001110,         0.0},
                              {3,  0, -1,  0, -0.000892,      3258.0},
                              {2,  1,  1,  0, -0.000810,      2616.0},
                              {4, -1, -2,  0,  0.000759,     -1897.0},
                              {0,  2, -1,  0, -0.000713,     -2117.0},
                              {2,  2, -1,  0, -0.000700,      2354.0},
                              {2,  1, -2,  0,  0.000691,         0.0},
                              {2, -1,  0, -2,  0.000596,         0.0},
                              {4,  0,  1,  0,  0.000549,     -1423.0},
                              {0,  0,  4,  0,  0.000537,     -1117.0},
                              {4, -1,  0,  0,  0.000520,     -1571.0},
                              {1,  0, -2,  0, -0.000487,     -1739.0},
                              {2,  1,  0, -2, -0.000399,         0.0},
                              {0,  0,  2, -2, -0.000381,     -4421.0},
                              {1,  1,  1,  0,  0.000351,         0.0},
                              {3,  0, -2,  0, -0.000340,         0.0},
                              {4,  0, -3,  0,  0.000330,         0.0},
                              {2, -1,  2,  0,  0.000327,         0.0},
                              {0,  2,  1,  0, -0.000323,      1165.0},
                              {1,  1, -1,  0,  0.000299,         0.0},
                              {2,  0,  3,  0,  0.000294,         0.0},
                              {2,  0, -1, -2,  0.000000,      8752.0}};

   static int NLR = ( sizeof tlr / sizeof ( struct termlr ) );

/*
** Coefficients for Moon latitude series
*/
   struct termb {
      int nd;           /* multiple of D  in argument           */
      int nem;          /*     "    "  M   "    "               */
      int nemp;         /*     "    "  M'  "    "               */
      int nf;           /*     "    "  F   "    "               */
      double coefb;     /* coefficient of B sine argument (deg) */
   };

static struct termb tb[] = {{0,  0,  0,  1,  5.128122},
                            {0,  0,  1,  1,  0.280602},
                            {0,  0,  1, -1,  0.277693},
                            {2,  0,  0, -1,  0.173237},
                            {2,  0, -1,  1,  0.055413},
                            {2,  0, -1, -1,  0.046271},
                            {2,  0,  0,  1,  0.032573},
                            {0,  0,  2,  1,  0.017198},
                            {2,  0,  1, -1,  0.009266},
                            {0,  0,  2, -1,  0.008822},
                            {2, -1,  0, -1,  0.008216},
                            {2,  0, -2, -1,  0.004324},
                            {2,  0,  1,  1,  0.004200},
                            {2,  1,  0, -1, -0.003359},
                            {2, -1, -1,  1,  0.002463},
                            {2, -1,  0,  1,  0.002211},
                            {2, -1, -1, -1,  0.002065},
                            {0,  1, -1, -1, -0.001870},
                            {4,  0, -1, -1,  0.001828},
                            {0,  1,  0,  1, -0.001794},
                            {0,  0,  0,  3, -0.001749},
                            {0,  1, -1,  1, -0.001565},
                            {1,  0,  0,  1, -0.001491},
                            {0,  1,  1,  1, -0.001475},
                            {0,  1,  1, -1, -0.001410},
                            {0,  1,  0, -1, -0.001344},
                            {1,  0,  0, -1, -0.001335},
                            {0,  0,  3,  1,  0.001107},
                            {4,  0,  0, -1,  0.001021},
                            {4,  0, -1,  1,  0.000833},
                            {0,  0,  1, -3,  0.000777},
                            {4,  0, -2,  1,  0.000671},
                            {2,  0,  0, -3,  0.000607},
                            {2,  0,  2, -1,  0.000596},
                            {2, -1,  1, -1,  0.000491},
                            {2,  0, -2,  1, -0.000451},
                            {0,  0,  3, -1,  0.000439},
                            {2,  0,  2,  1,  0.000422},
                            {2,  0, -3, -1,  0.000421},
                            {2,  1, -1,  1, -0.000366},
                            {2,  1,  0,  1, -0.000351},
                            {4,  0,  0,  1,  0.000331},
                            {2, -1,  1,  1,  0.000315},
                            {2, -2,  0, -1,  0.000302},
                            {0,  0,  1,  3, -0.000283},
                            {2,  1,  1, -1, -0.000229},
                            {1,  1,  0, -1,  0.000223},
                            {1,  1,  0,  1,  0.000223},
                            {0,  1, -2, -1, -0.000220},
                            {2,  1, -1, -1, -0.000220},
                            {1,  0,  1,  1, -0.000185},
                            {2, -1, -2, -1,  0.000181},
                            {0,  1,  2,  1, -0.000177},
                            {4,  0, -2, -1,  0.000176},
                            {4, -1, -1, -1,  0.000166},
                            {1,  0,  1, -1, -0.000164},
                            {4,  0,  1, -1,  0.000132},
                            {1,  0, -1, -1, -0.000119},
                            {4, -1,  0, -1,  0.000115},
                            {2, -2,  0,  1,  0.000107}};

   static int NB = ( sizeof tb / sizeof ( struct termb ) );

/* Miscellaneous */
   int n, i;
   double t, elpmf, delpmf, vel, vdel, vr, vdr, a1mf, da1mf, a1pf,
          da1pf, dlpmp, slpmp, vb, vdb, v, dv, emn, empn, dn, fn, en,
          den, arg, darg, farg, coeff, el, del, r, dr, b, db, gamb,
          phib, psib, epsa, rm[3][3];

/* ------------------------------------------------------------------ */

/* Centuries since J2000.0 */
   t = ((date1 - ERFA_DJ00) + date2) / ERFA_DJC;

/* --------------------- */
/* Fundamental arguments */
/* --------------------- */

/* Arguments (radians) and derivatives (radians per Julian century)
   for the current date. */

/* Moon's mean longitude. */
   elp = ERFA_DD2R * fmod ( elp0
                   + ( elp1
                   + ( elp2
                   + ( elp3
                   +   elp4 * t ) * t ) * t ) * t, 360.0 );
   delp = ERFA_DD2R * (     elp1
                   + ( elp2 * 2.0
                   + ( elp3 * 3.0
                   +   elp4 * 4.0 * t ) * t ) * t );

/* Moon's mean elongation. */
   d = ERFA_DD2R * fmod ( d0
                 + ( d1
                 + ( d2
                 + ( d3
                 +   d4 * t ) * t ) * t ) * t, 360.0 );
   dd = ERFA_DD2R * (     d1
                 + ( d2 * 2.0
                 + ( d3 * 3.0
                 +   d4 * 4.0 * t ) * t ) * t );

/* Sun's mean anomaly. */
   em = ERFA_DD2R * fmod ( em0
                  + ( em1
                  + ( em2
                  + ( em3
                  +   em4 * t ) * t ) * t ) * t, 360.0 );
   dem = ERFA_DD2R * (     em1
                  + ( em2 * 2.0
                  + ( em3 * 3.0
                  +   em4 * 4.0 * t ) * t ) * t );

/* Moon's mean anomaly. */
   emp = ERFA_DD2R * fmod ( emp0
                   + ( emp1
                   + ( emp2
                   + ( emp3
                   +   emp4 * t ) * t ) * t ) * t, 360.0 );
   demp = ERFA_DD2R * (     emp1
                   + ( emp2 * 2.0
                   + ( emp3 * 3.0
                   +   emp4 * 4.0 * t ) * t ) * t );

/* Mean distance of the Moon from its ascending node. */
   f = ERFA_DD2R * fmod ( f0
                 + ( f1
                 + ( f2
                 + ( f3
                 +   f4 * t ) * t ) * t ) * t, 360.0 );
   df = ERFA_DD2R * (     f1
                 + ( f2 * 2.0
                 + ( f3 * 3.0
                 +   f4 * 4.0 * t ) * t ) * t );

/* Meeus further arguments. */
   a1 = ERFA_DD2R * ( a10 + a11*t );
   da1 = ERFA_DD2R * al1;
   a2 = ERFA_DD2R * ( a20 + a21*t );
   da2 = ERFA_DD2R * a21;
   a3 = ERFA_DD2R * ( a30 + a31*t );
   da3 = ERFA_DD2R * a31;

/* E-factor, and square. */
   e = 1.0 + ( e1 + e2*t ) * t;
   de = e1 + 2.0*e2*t;
   esq = e*e;
   desq = 2.0*e*de;

/* Use the Meeus additive terms (deg) to start off the summations. */
   elpmf = elp - f;
   delpmf = delp - df;
   vel = al1 * sin(a1)
       + al2 * sin(elpmf)
       + al3 * sin(a2);
   vdel = al1 * cos(a1) * da1
        + al2 * cos(elpmf) * delpmf
        + al3 * cos(a2) * da2;

   vr = 0.0;
   vdr = 0.0;

   a1mf = a1 - f;
   da1mf = da1 - df;
   a1pf = a1 + f;
   da1pf = da1 + df;
   dlpmp = elp - emp;
   slpmp = elp + emp;
   vb = ab1 * sin(elp)
      + ab2 * sin(a3)
      + ab3 * sin(a1mf)
      + ab4 * sin(a1pf)
      + ab5 * sin(dlpmp)
      + ab6 * sin(slpmp);
   vdb = ab1 * cos(elp) * delp
       + ab2 * cos(a3) * da3
       + ab3 * cos(a1mf) * da1mf
       + ab4 * cos(a1pf) * da1pf
       + ab5 * cos(dlpmp) * (delp-demp)
       + ab6 * cos(slpmp) * (delp+demp);

/* ----------------- */
/* Series expansions */
/* ----------------- */

/* Longitude and distance plus derivatives. */
   for ( n = NLR-1; n >= 0; n-- ) {
      dn = (double) tlr[n].nd;
      emn = (double) ( i = tlr[n].nem );
      empn = (double) tlr[n].nemp;
      fn = (double) tlr[n].nf;
      switch ( abs(i) ) {
      case 1:
         en = e;
         den = de;
         break;
      case 2:
         en = esq;
         den = desq;
         break;
      default:
         en = 1.0;
         den = 0.0;
      }
      arg = dn*d + emn*em + empn*emp + fn*f;
      darg = dn*dd + emn*dem + empn*demp + fn*df;
      farg = sin(arg);
      v = farg * en;
      dv = cos(arg)*darg*en + farg*den;
      coeff = tlr[n].coefl;
      vel += coeff * v;
      vdel += coeff * dv;
      farg = cos(arg);
      v = farg * en;
      dv = -sin(arg)*darg*en + farg*den;
      coeff = tlr[n].coefr;
      vr += coeff * v;
      vdr += coeff * dv;
   }
   el = elp + ERFA_DD2R*vel;
   del = ( delp + ERFA_DD2R*vdel ) / ERFA_DJC;
   r = ( vr + r0 ) / ERFA_DAU;
   dr = vdr / ERFA_DAU / ERFA_DJC;

/* Latitude plus derivative. */
   for ( n = NB-1; n >= 0; n-- ) {
      dn = (double) tb[n].nd;
      emn = (double) ( i = tb[n].nem );
      empn = (double) tb[n].nemp;
      fn = (double) tb[n].nf;
      switch ( abs(i) ) {
      case 1:
         en = e;
         den = de;
         break;
      case 2:
         en = esq;
         den = desq;
         break;
      default:
         en = 1.0;
         den = 0.0;
      }
      arg = dn*d + emn*em + empn*emp + fn*f;
      darg = dn*dd + emn*dem + empn*demp + fn*df;
      farg = sin(arg);
      v = farg * en;
      dv = cos(arg)*darg*en + farg*den;
      coeff = tb[n].coefb;
      vb += coeff * v;
      vdb += coeff * dv;
   }
   b = vb * ERFA_DD2R;
   db = vdb * ERFA_DD2R / ERFA_DJC;

/* ------------------------------ */
/* Transformation into final form */
/* ------------------------------ */

/* Longitude, latitude to x, y, z (AU). */
   eraS2pv ( el, b, r, del, db, dr, pv );

/* IAU 2006 Fukushima-Williams bias+precession angles. */
   eraPfw06 ( date1, date2, &gamb, &phib, &psib, &epsa );

/* Mean ecliptic coordinates to GCRS rotation matrix. */
   eraIr ( rm );
   eraRz ( psib, rm );
   eraRx ( -phib, rm );
   eraRz ( -gamb, rm );

/* Rotate the Moon position and velocity into GCRS (Note 6). */
   eraRxpv ( rm, pv, pv );

/* Finished. */

}
/*----------------------------------------------------------------------
**  
**  
**  Copyright (C) 2013-2021, NumFOCUS Foundation.
**  All rights reserved.
**  
**  This library is derived, with permission, from the International
**  Astronomical Union's "Standards of Fundamental Astronomy" library,
**  available from http://www.iausofa.org.
**  
**  The ERFA version is intended to retain identical functionality to
**  the SOFA library, but made distinct through different function and
**  file names, as set out in the SOFA license conditions.  The SOFA
**  original has a role as a reference standard for the IAU and IERS,
**  and consequently redistribution is permitted only in its unaltered
**  state.  The ERFA version is not subject to this restriction and
**  therefore can be included in distributions which do not support the
**  concept of "read only" software.
**  
**  Although the intent is to replicate the SOFA API (other than
**  replacement of prefix names) and results (with the exception of
**  bugs;  any that are discovered will be fixed), SOFA is not
**  responsible for any errors found in this version of the library.
**  
**  If you wish to acknowledge the SOFA heritage, please acknowledge
**  that you are using a library derived from SOFA, rather than SOFA
**  itself.
**  
**  
**  TERMS AND CONDITIONS
**  
**  Redistribution and use in source and binary forms, with or without
**  modification, are permitted provided that the following conditions
**  are met:
**  
**  1 Redistributions of source code must retain the above copyright
**    notice, this list of conditions and the following disclaimer.
**  
**  2 Redistributions in binary form must reproduce the above copyright
**    notice, this list of conditions and the following disclaimer in
**    the documentation and/or other materials provided with the
**    distribution.
**  
**  3 Neither the name of the Standards Of Fundamental Astronomy Board,
**    the International Astronomical Union nor the names of its
**    contributors may be used to endorse or promote products derived
**    from this software without specific prior written permission.
**  
**  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
**  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
**  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
**  FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
**  COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
**  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
**  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
**  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
**  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
**  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
**  ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
**  POSSIBILITY OF SUCH DAMAGE.
**  
*/
