View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0033448 | Community | OCCT:Modeling Algorithms | public | 2023-08-28 15:09 | 2026-01-13 19:19 |
| Reporter | j.bourgoin | Assigned To | j.bourgoin | ||
| Priority | normal | Severity | major | ||
| Status | resolved | Resolution | open | ||
| Platform | Windows | OS | VC++ 2022 | ||
| Product Version | 7.7.1 | ||||
| Target Version | 7.8.0 | ||||
| Summary | 0033448: Modeling Algorithms - incorrect result in solving 4th degree equations | ||||
| Description | Hello, There are sometimes bad results in math_DirectPolynomialRoots::Solve(const Standard_Real a, const Standard_Real b, const Standard_Real c, const Standard_Real d, const Standard_Real e) | ||||
| Steps To Reproduce | We don't get the right results, with values: a=1.0000000000000004 b=-2.2737367544323211e-13 c=-17361733.368892364 d=28.998342463569099 e=75357446168894.516 | ||||
| Additional information and documentation updates | The results can be checked with this website: http://serge.mehl.free.fr/anx/equ4_ferrari.html | ||||
| Tags | No tags attached. | ||||
| Test case number | |||||
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Reminder sent to: dpasukhi Hi @dpasukhi, did you have time to check this issue ? Thanks ! |
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@j.bourgoin Not yet. It is still on to-do list. |
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Hi, is there any update for this issue please ? |
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The results with current numbers are valid. The difference are only order of roots, which is on your site have specific post-ordering.. |
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Oh, on MacOS it is perfect, other OS are broken. Sorry, yes, I can see broken results for that case. |
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Merged into trad-781, repository: https://github.com/Open-Cascade-SAS/OCCT-Archive/tree/trad-781 Commit: 732f347aaad764da2ee1183464a6f38eb5ea291d Branch: https://github.com/Open-Cascade-SAS/OCCT-Archive/tree/trad-781 |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2023-08-28 15:09 | j.bourgoin | New Issue | |
| 2023-08-28 15:09 | j.bourgoin | Assigned To | => oan |
| 2023-09-15 17:12 | j.bourgoin | Assigned To | oan => akaftasev |
| 2023-09-15 17:15 | dpasukhi | Summary | Error in solving 4th degree equations => Modeling Algorithms - incorrect result in solving 4th degree equations |
| 2023-09-15 17:15 | dpasukhi | Target Version | => Unscheduled |
| 2023-09-15 19:23 | dpasukhi | Target Version | Unscheduled => 7.8.0 |
| 2023-09-15 19:23 | dpasukhi | Assigned To | akaftasev => dpasukhi |
| 2023-09-15 19:23 | dpasukhi | Status | new => assigned |
| 2023-11-17 13:10 | j.bourgoin | Note Added: 0114609 | |
| 2023-11-17 13:20 | dpasukhi | Note Added: 0114610 | |
| 2024-12-05 16:28 | j.bourgoin | Note Added: 0116893 | |
| 2025-09-09 18:48 | dpasukhi | Note Added: 0117083 | |
| 2025-09-09 23:19 | dpasukhi | Note Added: 0117084 | |
| 2026-01-13 19:19 | dpasukhi | Assigned To | dpasukhi => j.bourgoin |
| 2026-01-13 19:19 | dpasukhi | Status | assigned => resolved |
| 2026-01-13 19:19 | dpasukhi | Note Added: 0117112 |