1 files changed, 17 insertions, 0 deletions
diff --git a/include/util.h b/include/util.h
new file mode 100644
index 000000000..63887b13f
--- /dev/null
+++ b/include/util.h
@@ -0,0 +1,17 @@
+#ifndef GUARD_UTIL_H
+#define GUARD_UTIL_H
+
+#include "sprite.h"
+
+extern const u8 gMiscBlank_Gfx[]; // unused in Emerald
+extern const u32 gBitTable[];
+
+u8 CreateInvisibleSpriteWithCallback(void (*)(struct Sprite *));
+void StoreWordInTwoHalfwords(u16 *, u32);
+void LoadWordFromTwoHalfwords(u16 *, u32 *);
+int CountTrailingZeroBits(u32 value);
+u16 CalcCRC16(u8 *data, s32 length);
+u16 CalcCRC16WithTable(u8 *data, u32 length);
+u32 CalcByteArraySum(const u8* data, u32 length);
+
+#endif // GUARD_UTIL_H