upgrade ast 8.7.1

1 files changed, 153 insertions, 0 deletions

diff --git a/ast/erfa/atciqz.c b/ast/erfa/atciqz.c
new file mode 100644
index 0000000..d141b91
--- /dev/null
+++ b/ast/erfa/atciqz.c
@@ -0,0 +1,153 @@
+#include "erfa.h"
+
+void eraAtciqz(double rc, double dc, eraASTROM *astrom,
+               double *ri, double *di)
+/*
+**  - - - - - - - - - -
+**   e r a A t c i q z
+**  - - - - - - - - - -
+**
+**  Quick ICRS to CIRS transformation, given precomputed star-
+**  independent astrometry parameters, and assuming zero parallax and
+**  proper motion.
+**
+**  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].
+**
+**  The corresponding function for the case of non-zero parallax and
+**  proper motion is eraAtciq.
+**
+**  Given:
+**     rc,dc  double     ICRS astrometric RA,Dec (radians)
+**     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)
+**
+**  Returned:
+**     ri,di  double     CIRS RA,Dec (radians)
+**
+**  Note:
+**
+**     All the vectors are with respect to BCRS axes.
+**
+**  References:
+**
+**     Urban, S. & Seidelmann, P. K. (eds), Explanatory Supplement to
+**     the Astronomical Almanac, 3rd ed., University Science Books
+**     (2013).
+**
+**     Klioner, Sergei A., "A practical relativistic model for micro-
+**     arcsecond astrometry in space", Astr. J. 125, 1580-1597 (2003).
+**
+**  Called:
+**     eraS2c       spherical coordinates to unit vector
+**     eraLdsun     light deflection due to Sun
+**     eraAb        stellar aberration
+**     eraRxp       product of r-matrix and p-vector
+**     eraC2s       p-vector to spherical
+**     eraAnp       normalize angle into range +/- pi
+**
+**  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;
+
+
+/* BCRS coordinate direction (unit vector). */
+   eraS2c(rc, dc, pco);
+
+/* Light deflection by the Sun, giving BCRS natural direction. */
+   eraLdsun(pco, astrom->eh, astrom->em, 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.
+**  
+*/