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eraPvxpv

axb = ERFA.pvxpv(a, b)

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

This revision: 2021 May 11

Copyright (C) 2013-2021, NumFOCUS Foundation. Derived, with permission, from the SOFA library.