Initial commit.

1 files changed, 21 insertions, 0 deletions

diff --git a/list/include/list.h b/list/include/list.h
new file mode 100644
index 0000000..b00b48b
--- /dev/null
+++ b/list/include/list.h
@@ -0,0 +1,21 @@
+/// A doubly linked list.
+///
+/// This list does not hold user data. Instead, the list can be used as an
+/// intrusive list or as part as a more complex data structure.
+#pragma once
+
+#include <stddef.h>
+
+typedef struct list list;
+
+typedef struct list {
+  list* prev;
+  list* next;
+} list;
+
+/// Create a new list from an array of `size` items.
+void list_make(list* list, size_t size);
+
+/// Iterates over all the items in the list.
+#define list_foreach(LIST, iter)                                               \
+  for (struct list* iter = LIST; iter; iter = iter->next)