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| author | Tomas Vondra <tomas.vondra@postgresql.org> | 2018-07-29 20:35:18 +0200 |
|---|---|---|
| committer | Tomas Vondra <tomas.vondra@postgresql.org> | 2018-07-29 21:11:05 +0200 |
| commit | 74294c7301340eeb477343dd26d98d2f3e33bd20 (patch) | |
| tree | baf3c30c0a9ebcdef1d04dd0f39a10a5dfbce847 | |
| parent | fb17eabf1b513614946bfc37125c83db197d2c68 (diff) | |
| download | postgresql-74294c7301340eeb477343dd26d98d2f3e33bd20.tar.gz postgresql-74294c7301340eeb477343dd26d98d2f3e33bd20.zip | |
Restore handling of -0 in the C field of lines in line_construct().
Commit a7dc63d904 inadvertedly removed this bit originally introduced
by 43fe90f66a, causing regression test failures on some platforms,
due to producing {1,-1,-0} instead of {1,-1,0}.
| -rw-r--r-- | src/backend/utils/adt/geo_ops.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/backend/utils/adt/geo_ops.c b/src/backend/utils/adt/geo_ops.c index 1fb2ff2603c..621b5c33ef1 100644 --- a/src/backend/utils/adt/geo_ops.c +++ b/src/backend/utils/adt/geo_ops.c @@ -1024,6 +1024,9 @@ line_construct(LINE *result, Point *pt, float8 m) result->A = m; result->B = -1.0; result->C = pt->y - m * pt->x; + /* on some platforms, the preceding expression tends to produce -0 */ + if (result->C == 0.0) + result->C = 0.0; } } |