bitmap: add bm_unset.

fastly · May 22, 2024 · f01c9a2 · f01c9a2
1 parent 05786ed
commit f01c9a2
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diff --git a/include/adt/bitmap.h b/include/adt/bitmap.h
@@ -26,6 +26,9 @@ bm_get(const struct bm *bm, size_t i);
 void
 bm_set(struct bm *bm, size_t i);
 
+void
+bm_unset(struct bm *bm, size_t i);
+
 /* Get a writeable pointer to the Nth word of the char set bitmap,
  * or NULL if out of bounds. */
 uint64_t *

diff --git a/src/adt/bitmap.c b/src/adt/bitmap.c
@@ -35,6 +35,15 @@ bm_set(struct bm *bm, size_t i)
 	u64bitset_set(bm->map, i);
 }
 
+void
+bm_unset(struct bm *bm, size_t i)
+{
+	assert(bm != NULL);
+	assert(i <= UCHAR_MAX);
+
+	u64bitset_clear(bm->map, i);
+}
+
 uint64_t *
 bm_nth_word(struct bm *bm, size_t n)
 {