rxr

erfa.rxr(a, b)[source]

Multiply two r-matrices.

Parameters:
adouble array
bdouble array
Returns:
atbdouble array

Notes

Wraps ERFA function eraRxr. The ERFA documentation is:

- - - - - - -
 e r a R x r
- - - - - - -

Multiply two r-matrices.

Given:
   a        double[3][3]    first r-matrix
   b        double[3][3]    second r-matrix

Returned:
   atb      double[3][3]    a * b

Note:
   It is permissible to re-use the same array for any of the
   arguments.

Called:
   eraCr        copy r-matrix

This revision:  2021 May 11

Copyright (C) 2013-2023, NumFOCUS Foundation.
Derived, with permission, from the SOFA library.  See notes at end of file.