fix: pivot on zero diagonal in points_to_polynomial - #15044
Open
deepshekhardas wants to merge 1 commit into
Open
fix: pivot on zero diagonal in points_to_polynomial#15044deepshekhardas wants to merge 1 commit into
deepshekhardas wants to merge 1 commit into
Conversation
Copy link
Copy Markdown
Sorry, something went wrong.
Gaussian elimination without pivoting divided by zero when any point had x = 0. Swap in a non-zero pivot row only when the diagonal is zero. Fixes TheAlgorithms#14817
This was referenced Aug 21, 2026
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Describe your change
What does this implement/fix?
Gaussian elimination without pivoting divided by zero when any point had x = 0 (zero pivot on the diagonal). Swap in a non-zero pivot row only when the diagonal is zero, preserving exact arithmetic for well-behaved inputs.
Additional comments?
None.
Fixes #14817