update ast 8.6.2

1 files changed, 191 insertions, 0 deletions

diff --git a/ast/erfa/atciqn.c b/ast/erfa/atciqn.c
new file mode 100644
index 0000000..0ad89a0
--- /dev/null
+++ b/ast/erfa/atciqn.c
@@ -0,0 +1,191 @@
+#include "erfa.h"
+
+void eraAtciqn(double rc, double dc, double pr, double pd,
+               double px, double rv, eraASTROM *astrom,
+               int n, eraLDBODY b[], double *ri, double *di)
+/*
+**  - - - - - - - - - -
+**   e r a A t c i q n
+**  - - - - - - - - - -
+**
+**  Quick ICRS, epoch J2000.0, to CIRS transformation, given precomputed
+**  star-independent astrometry parameters plus a list of light-
+**  deflecting bodies.
+**
+**  Use of this function is appropriate when efficiency is important and
+**  where many star positions are to be transformed for one date.  The
+**  star-independent parameters can be obtained by calling one of the
+**  functions eraApci[13], eraApcg[13], eraApco[13] or eraApcs[13].
+**
+**
+**  If the only light-deflecting body to be taken into account is the
+**  Sun, the eraAtciq function can be used instead.  If in addition the
+**  parallax and proper motions are zero, the eraAtciqz function can be
+**  used.
+**
+**  Given:
+**     rc,dc  double       ICRS RA,Dec at J2000.0 (radians)
+**     pr     double       RA proper motion (radians/year; Note 3)
+**     pd     double       Dec proper motion (radians/year)
+**     px     double       parallax (arcsec)
+**     rv     double       radial velocity (km/s, +ve if receding)
+**     astrom eraASTROM*   star-independent astrometry parameters:
+**      pmt    double       PM time interval (SSB, Julian years)
+**      eb     double[3]    SSB to observer (vector, au)
+**      eh     double[3]    Sun to observer (unit vector)
+**      em     double       distance from Sun to observer (au)
+**      v      double[3]    barycentric observer velocity (vector, c)
+**      bm1    double       sqrt(1-|v|^2): reciprocal of Lorenz factor
+**      bpn    double[3][3] bias-precession-nutation matrix
+**      along  double       longitude + s' (radians)
+**      xpl    double       polar motion xp wrt local meridian (radians)
+**      ypl    double       polar motion yp wrt local meridian (radians)
+**      sphi   double       sine of geodetic latitude
+**      cphi   double       cosine of geodetic latitude
+**      diurab double       magnitude of diurnal aberration vector
+**      eral   double       "local" Earth rotation angle (radians)
+**      refa   double       refraction constant A (radians)
+**      refb   double       refraction constant B (radians)
+**      n     int           number of bodies (Note 3)
+**      b     eraLDBODY[n] data for each of the n bodies (Notes 3,4):
+**       bm    double        mass of the body (solar masses, Note 5)
+**       dl    double        deflection limiter (Note 6)
+**       pv    [2][3]        barycentric PV of the body (au, au/day)
+**
+**  Returned:
+**     ri,di   double    CIRS RA,Dec (radians)
+**
+**  Notes:
+**
+**  1) Star data for an epoch other than J2000.0 (for example from the
+**     Hipparcos catalog, which has an epoch of J1991.25) will require a
+**     preliminary call to eraPmsafe before use.
+**
+**  2) The proper motion in RA is dRA/dt rather than cos(Dec)*dRA/dt.
+**
+**  3) The struct b contains n entries, one for each body to be
+**     considered.  If n = 0, no gravitational light deflection will be
+**     applied, not even for the Sun.
+**
+**  4) The struct b should include an entry for the Sun as well as for
+**     any planet or other body to be taken into account.  The entries
+**     should be in the order in which the light passes the body.
+**
+**  5) In the entry in the b struct for body i, the mass parameter
+**     b[i].bm can, as required, be adjusted in order to allow for such
+**     effects as quadrupole field.
+**
+**  6) The deflection limiter parameter b[i].dl is phi^2/2, where phi is
+**     the angular separation (in radians) between star and body at
+**     which limiting is applied.  As phi shrinks below the chosen
+**     threshold, the deflection is artificially reduced, reaching zero
+**     for phi = 0.   Example values suitable for a terrestrial
+**     observer, together with masses, are as follows:
+**
+**        body i     b[i].bm        b[i].dl
+**
+**        Sun        1.0            6e-6
+**        Jupiter    0.00095435     3e-9
+**        Saturn     0.00028574     3e-10
+**
+**  7) For efficiency, validation of the contents of the b array is
+**     omitted.  The supplied masses must be greater than zero, the
+**     position and velocity vectors must be right, and the deflection
+**     limiter greater than zero.
+**
+**  Called:
+**     eraPmpx      proper motion and parallax
+**     eraLdn       light deflection by n bodies
+**     eraAb        stellar aberration
+**     eraRxp       product of r-matrix and pv-vector
+**     eraC2s       p-vector to spherical
+**     eraAnp       normalize angle into range 0 to 2pi
+**
+**  Copyright (C) 2013-2016, NumFOCUS Foundation.
+**  Derived, with permission, from the SOFA library.  See notes at end of file.
+*/
+{
+   double pco[3], pnat[3], ppr[3], pi[3], w;
+
+
+/* Proper motion and parallax, giving BCRS coordinate direction. */
+   eraPmpx(rc, dc, pr, pd, px, rv, astrom->pmt, astrom->eb, pco);
+
+/* Light deflection, giving BCRS natural direction. */
+   eraLdn(n, b, astrom->eb, pco, pnat);
+
+/* Aberration, giving GCRS proper direction. */
+   eraAb(pnat, astrom->v, astrom->em, astrom->bm1, ppr);
+
+/* Bias-precession-nutation, giving CIRS proper direction. */
+   eraRxp(astrom->bpn, ppr, pi);
+
+/* CIRS RA,Dec. */
+   eraC2s(pi, &w, di);
+   *ri = eraAnp(w);
+
+/* Finished. */
+
+}
+/*----------------------------------------------------------------------
+**  
+**  
+**  Copyright (C) 2013-2016, 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.
+**  
+*/