WIP hashmap

hashmap.c

@@ -0,0 +1,28 @@
+#include "cig.h"
+
+void *hashmap_create_func(
+	hashmap_create_func_args_t args
+) {
+	size_t size_of_index_arr = sizeof(int) * args.initial_capacity * 2;
+	size_t INC = sizeof(any_align_t);
+	size_t SIZE = args.itemsize * args.initial_capacity;
+	size_t size_of_items_arr = (SIZE + INC - 1) / INC;
+	size_t bytes = sizeof(hashmap_header_t) + size_of_items_arr + size_of_index_arr;
+
+	hashmap_header_t *header = allocator_alloc_func(
+		args.allocator,
+		bytes,
+		args.file,
+		args.line
+	);
+
+	header->n_items = 0;
+	header->capacity = args.initial_capacity;
+	header->itemsize = args.itemsize;
+	header->keysize = args.keysize;
+	header->allocator = args.allocator;
+	header->hash = args.hash;
+	header->equals = args.equals;
+
+	return header->bytes;
+}