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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2020-04-22 21:32:38 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2020-04-22 21:32:46 -0400 |
| commit | 1cc34640cabcb32b4f062673cce1d6b1819d492d (patch) | |
| tree | 84b5a660f370c92dca5a00234b1b5885af977ed6 /src/backend/access/transam/commit_ts.c | |
| parent | 48107e396f75ea65192153707a8c476f66b59061 (diff) | |
| download | postgresql-1cc34640cabcb32b4f062673cce1d6b1819d492d.tar.gz postgresql-1cc34640cabcb32b4f062673cce1d6b1819d492d.zip | |
Doc: improve description of geometric multiplication/division.
David Johnston reminded me that the per-point calculations being done
by these operators are equivalent to complex multiplication/division.
(Once I would've recognized that immediately, but it's been too long
since I did any of that sort of math.)
Also put in a footnote mentioning that "rotation" of a box doesn't do
what you might expect, as I'd griped about in the referenced thread.
Discussion: https://postgr.es/m/158110996889.1089.4224139874633222837@wrigleys.postgresql.org
Diffstat (limited to 'src/backend/access/transam/commit_ts.c')
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