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lpy: y-indexed Legendre polynomials 

Former-commit-id: 4dbf98563d1d09ab1ceffbedbb827bac8bccd88d
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Marek Nečada 2016-01-04 14:09:24 +02:00
parent 3e117f301b
commit 704a065ca1
1 changed files with 18 additions and 1 deletions
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@ -1172,7 +1172,24 @@ gmm_f2py_module.f90
\end_deeper
\begin_layout Section
Code integration
Implementation / code integration
\end_layout
\begin_layout Standard
There are several scipy functions to compute the Legendre polynomials.
lpmv is ufunc, whereas lpmn is not; lpmn can, however, compute also the
derivatives.
This is a bit annoying, because I have to iterate the positions with a
for loop.
\end_layout
\begin_layout Standard
The default gsl legendre function (gsl_sf_legendre_array) without additional
parameters has opposite sign than the scipy.special.lpmn, and it should contain
the Condon-Shortley phase; thus scipy.special.lpmn probably does NOT include
the CS phase.
But again, this should hopefully play no role.
The overall normalisation, on the other hand, plays huge role.
\end_layout
\begin_layout Section