1 files changed, 41 insertions, 0 deletions
diff --git a/kit/array_ref.c b/kit/array_ref.c
new file mode 100644
index 0000000..a9df2c4
--- /dev/null
+++ b/kit/array_ref.c
@@ -0,0 +1,41 @@
+#include "array_ref.h"
+
+#include <string.h>
+
+i8 kit_ar_equal_bytes(i64 left_element_size, i64 left_size,
+                      void *left_data, i64 right_element_size,
+                      i64 right_size, void *right_data) {
+  i64 i;
+  if (left_element_size != right_element_size)
+    return 0;
+  if (left_size != right_size)
+    return 0;
+  for (i = 0; i < left_size; i++)
+    if (memcmp((u8 *) left_data + i * left_element_size,
+               (u8 *) right_data + i * left_element_size,
+               left_element_size) != 0)
+      return 0;
+  return 1;
+}
+
+i8 kit_ar_compare(i64 left_element_size, i64 left_size,
+                  void *left_data, i64 right_element_size,
+                  i64 right_size, void *right_data,
+                  kit_ar_compare_fn compare) {
+  i64 i;
+  if (left_element_size < right_element_size)
+    return -1;
+  if (left_element_size > right_element_size)
+    return 1;
+  for (i = 0; i < left_size && i < right_size; i++) {
+    i8 c = compare((u8 *) left_data + i * left_element_size,
+                   (u8 *) right_data + i * left_element_size);
+    if (c != 0)
+      return c;
+  }
+  if (left_size < right_size)
+    return -1;
+  if (left_size > right_size)
+    return 1;
+  return 0;
+}