upgrade ast 8.7.1

1 files changed, 116 insertions, 0 deletions

diff --git a/ast/erfa/pvxpv.c b/ast/erfa/pvxpv.c
new file mode 100644
index 0000000..0d87479
--- /dev/null
+++ b/ast/erfa/pvxpv.c
@@ -0,0 +1,116 @@
+#include "erfa.h"
+
+void eraPvxpv(double a[2][3], double b[2][3], double axb[2][3])
+/*
+**  - - - - - - - - -
+**   e r a P v x p v
+**  - - - - - - - - -
+**
+**  Outer (=vector=cross) product of two pv-vectors.
+**
+**  Given:
+**     a        double[2][3]      first pv-vector
+**     b        double[2][3]      second pv-vector
+**
+**  Returned:
+**     axb      double[2][3]      a x b
+**
+**  Notes:
+**
+**  1) If the position and velocity components of the two pv-vectors are
+**     ( ap, av ) and ( bp, bv ), the result, a x b, is the pair of
+**     vectors ( ap x bp, ap x bv + av x bp ).  The two vectors are the
+**     cross-product of the two p-vectors and its derivative.
+**
+**  2) It is permissible to re-use the same array for any of the
+**     arguments.
+**
+**  Called:
+**     eraCpv       copy pv-vector
+**     eraPxp       vector product of two p-vectors
+**     eraPpp       p-vector plus p-vector
+**
+**  Copyright (C) 2013-2016, NumFOCUS Foundation.
+**  Derived, with permission, from the SOFA library.  See notes at end of file.
+*/
+{
+   double wa[2][3], wb[2][3], axbd[3], adxb[3];
+
+
+/* Make copies of the inputs. */
+   eraCpv(a, wa);
+   eraCpv(b, wb);
+
+/* a x b = position part of result. */
+   eraPxp(wa[0], wb[0], axb[0]);
+
+/* a x bdot + adot x b = velocity part of result. */
+   eraPxp(wa[0], wb[1], axbd);
+   eraPxp(wa[1], wb[0], adxb);
+   eraPpp(axbd, adxb, axb[1]);
+
+   return;
+
+}
+/*----------------------------------------------------------------------
+**  
+**  
+**  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.
+**  
+*/