Add an explicit hash_delete() function.

diff --git a/src/hash.c b/src/hash.c
index 8fb9ca6..91fc3d6 100644 (file)
--- a/src/hash.c
+++ b/src/hash.c
@@ -91,6 +91,13 @@ void *hash_search_or_insert(hash_t *hash, const void *key, const void *value) {
        return NULL;
 }
 
+/* Deleting */
+
+void hash_delete(hash_t *hash, const void *key) {
+       uint32_t i = modulo(hash_function(key, hash->size), hash->n);
+       hash->values[i] = NULL;
+}
+
 /* Utility functions */
 
 void hash_clear(hash_t *hash) {

diff --git a/src/hash.h b/src/hash.h
index 83ed6af..30a15fb 100644 (file)
--- a/src/hash.h
+++ b/src/hash.h
@@ -31,6 +31,7 @@ extern hash_t *hash_alloc(size_t n, size_t size) __attribute__ ((__malloc__));
 extern void hash_free(hash_t *);
 
 extern void hash_insert(hash_t *, const void *key, const void *value);
+extern void hash_delete(hash_t *, const void *key);
 
 extern void *hash_search(const hash_t *, const void *key);
 extern void *hash_search_or_insert(hash_t *, const void *key, const void *value);