GNU Scientific Library - Bugs: bug #28267, poor convergence region for...
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bug #28267: poor convergence region for gsl_sf_hyperg_1F1
Submitter: | -Deleted Account- <bjg> | ||
Submitted: | Fri 11 Dec 2009 08:35:17 PM UTC | ||
Category: | Accuracy problem | Severity: | 3 - Normal |
Operating System: | Status: | Postponed | |
Assigned to: | None | Open/Closed: | Open |
Release: | 1.13 |
Thu 25 Feb 2010 03:42:25 PM UTC, comment #2: |
-Deleted Account- <bjg> |
Fri 11 Dec 2009 08:36:23 PM UTC, comment #1: It's inherently difficult to compute the value in this region either way as there is massive cancellation in both the series and the Kummer transformed series. |
-Deleted Account- <bjg> |
Fri 11 Dec 2009 08:35:17 PM UTC, original submission:
The magnitude of the error is greater than the value itself for
|
-Deleted Account- <bjg> |
Depends on the following items: None found
Items that depend on this one: None found
Follow 2 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2010-02-25 | bjg | Status | Confirmed | Postponed | |
2009-12-11 | bjg | Attached File | - | Added hyperg1F1.c, #19240 |
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Corresponding source code
I cannot find any algorithm which handles this case.