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Diffstat (limited to 'src/backend/nodes/bitmapset.c')
| -rw-r--r-- | src/backend/nodes/bitmapset.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/backend/nodes/bitmapset.c b/src/backend/nodes/bitmapset.c index 649478b0d4d..bff70cfb1ab 100644 --- a/src/backend/nodes/bitmapset.c +++ b/src/backend/nodes/bitmapset.c @@ -540,6 +540,8 @@ bms_overlap_list(const Bitmapset *a, const List *b) /* * bms_nonempty_difference - do sets have a nonempty difference? + * + * i.e., are any members set in 'a' that are not also set in 'b'. */ bool bms_nonempty_difference(const Bitmapset *a, const Bitmapset *b) |