segasai/q3c v2.0.6

Q3C-2.0.6

on GitHub

A bug-fix release. Upgrading is recommended.

As with 2.0.5, this release includes fixes for issues found by LLM-assisted code audits.

Fixes

• Fixed several memory-management bugs.
• Very small (sub-mas) cone searches could miss objects, including the object at their own centre.
• Polygon queries could return results for the previous row's polygon when the polygon changed from row to row.
• Radial, ellipse and polygon queries near cube corners could fail with "too many ipix ranges".
• q3c_ellipse_join could miss matches for thin ellipses that cross a cube corner.

Behaviour changes

• q3c_join no longer fails when a position is NaN or infinite. That row simply matches nothing. Radial, ellipse and q3c_nearby queries with a NaN or infinite centre or radius now return no rows instead of raising an error (#52).
• q3c_in_poly() returns NULL for a NaN or infinite point. A polygon with NaN or infinite vertices raises an error, and so does a polygon that is too large (#50, #52).
• q3c_dist_pm / q3c_sindist_pm return NULL when cosdec_flag is NULL (#55).
• q3c_in_ellipse() has been rewritten to be more numerically accurate. Results can differ for points right on the edge of very small (around milliarcsecond) ellipses.

Thanks to @demitri for reporting several of these issues.