Opened 9 years ago
Closed 8 years ago
#9927 closed Bugs (worksforme)
Bug in zero's finding of bessel functions
| Reported by: | Owned by: | John Maddock | |
|---|---|---|---|
| Milestone: | To Be Determined | Component: | math |
| Version: | Boost 1.55.0 | Severity: | Cosmetic |
| Keywords: | special functions | Cc: |
Description
The zero finding routine for cylindrical bessel functions gives incorrect values for a large number of nodes for a variety of orders. Examples are
order = 3/2, first zero. Reported at 8.3825 but should be at 8.1825, i.e. 0.2 lower. I check refined all first 100 zeros up to order 100+1/2 using a golden section search against a spherical bessel function. Where there are errors, they are always 0.2.
Change History (4)
comment:1 by , 9 years ago
comment:2 by , 9 years ago
| Severity: | Problem → Cosmetic |
|---|
comment:4 by , 8 years ago
| Resolution: | → worksforme |
|---|---|
| Status: | new → closed |
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After applying patch
https://github.com/boostorg/math/commit/9f8ffee4b7a3f82b1c582735d43522d7d0cde746
the problem went away.
Problem solved!