diff options
Diffstat (limited to 'src/backend/utils/adt/geo_ops.c')
| -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 25f0bfd3943..41178a6540e 100644 --- a/src/backend/utils/adt/geo_ops.c +++ b/src/backend/utils/adt/geo_ops.c @@ -1116,6 +1116,9 @@ line_construct_pts(LINE *line, Point *pt1, Point *pt2) line->A = (pt2->y - pt1->y) / (pt2->x - pt1->x); line->B = -1.0; line->C = pt1->y - line->A * pt1->x; + /* on some platforms, the preceding expression tends to produce -0 */ + if (line->C == 0.0) + line->C = 0.0; #ifdef GEODEBUG printf("line_construct_pts- line is neither vertical nor horizontal (diffs x=%.*g, y=%.*g\n", DBL_DIG, (pt2->x - pt1->x), DBL_DIG, (pt2->y - pt1->y)); |