apb = ERFA.pvppv(a, b)
Add one pv-vector to another.
a double[2][3] first pv-vector
b double[2][3] second pv-vector
apb double[2][3] a + b
It is permissible to re-use the same array for any of the
arguments.
eraPpp p-vector plus p-vector
This revision: 2021 May 11
Copyright (C) 2013-2021, NumFOCUS Foundation. Derived, with permission, from the SOFA library.