QPMS
/
qpms
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Note about argument order in translations.h 

Former-commit-id: 38214dbf55ad1a4cb6b168d8aad9422f000a8cf0
This commit is contained in:
Marek Nečada 2018-09-03 19:49:33 +03:00
parent 08f7590f60
commit fb7b84e066
1 changed files with 19 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
qpms/translations.h
View File

@ -10,6 +10,25 @@
#include "bessels.h"
#endif
/*
* Argument conventions:
*
* A single wave with indices mu, nu is re-expanded at kdlj into waves with indices m, n,
* i.e. in the following functions, the first arguments over which one sums (multiplied
* by the waves with new origin).
*
* HOWEVER, this means that if a field has an expansion with coeffs a(mu, nu)
* at the original origin, with the basis at the new origin, the coeffs will be
* a(m, n) = \sum_{mu,nu} A(m, n, mu, nu) a(mu, nu).
*
* With qpms_trans_calculator_get_AB_arrays_buf (and other functions from *AB_arrays*
* family), one can choose the stride. And it seems that the former stride argument (now called
* destride) and the latter (now called srcstride) are connected to (m,n) and (mu,nu) indices,
* respectively. Seems consistent.
*
*/
// TODO replace the xplicit "Taylor" functions with general,
// taking qpms_normalisation_t argument.
complex double qpms_trans_single_A_Taylor(qpms_m_t m, qpms_l_t n, qpms_m_t mu, qpms_l_t nu, sph_t kdlj,