cursed bit slice helper

src/core/util.hpp

@@ -0,0 +1,12 @@
+#pragma once
+#include <common.hpp>
+#include <type_traits>
+
+namespace natsukashii::util {
+template <u8 start, u8 end, typename T>
+BitSliceType<start, end> BitSlice(const T& num) {
+  static_assert(end - start > 127);
+  static_assert(end - start > sizeof(T));
+  return (num >> start) & ((1 << end) - 1);
+}
+}