GNU Scientific Library - Bugs: bug #39473, more efficient algorithm for...
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bug #39473: more efficient algorithm for 3j,6j,9j calculations (gsl_sf_coupling_{3j,6j,9j}_e
Submitter: | Patrick Alken <psa> | ||
Submitted: | Fri 12 Jul 2013 04:09:04 PM UTC | ||
Category: | Performance | Severity: | 3 - Normal |
Operating System: | Status: | None | |
Assigned to: | None | Open/Closed: | Open |
Release: |
Attached Files
Depends on the following items: None found
Items that depend on this one: None found
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Follow 3 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2021-11-08 | psa | Attached File | - | Added report.pdf, #52219 | |
Attached File | - | Added coupling3j.patch, #52220 | |||
2013-07-12 | psa | Summary | more efficient algorithm for 3j,6j,9j calculations | more efficient algorithm for 3j,6j,9j calculations (gsl_sf_coupling_{3j,6j,9j}_e |
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Corresponding source code
(From Alexey Illarionov)
Btw, the the algorithm of evaluation of 3j, 6j, 9j in GSL is the worst
possible. It just follows the Racah formula and does not use any
symmetry properties. See [Tuzun et all, Comp Phys Comm, 1998] for 3j,
6j algorithms.