1 files changed, 45 insertions, 0 deletions
diff --git a/arm9/lib/NitroSDK/include/MATH_crc.h b/arm9/lib/NitroSDK/include/MATH_crc.h
new file mode 100644
index 00000000..4f06fa75
--- /dev/null
+++ b/arm9/lib/NitroSDK/include/MATH_crc.h
@@ -0,0 +1,45 @@
+#ifndef GUARD_MATH_CRC_H
+#define GUARD_MATH_CRC_H
+
+#include "nitro/types.h"
+
+typedef u8 MATHCRC8Context;
+typedef u16 MATHCRC16Context;
+typedef u32 MATHCRC32Context;
+
+#define MATH_CRC16_CCITT_POLY 0x1021
+
+struct MATHCRC8Table {
+    u8 table[256];
+};
+
+struct MATHCRC16Table {
+    u16 table[256];
+};
+
+struct MATHCRC32Table {
+    u32 table[256];
+};
+
+u32 MATH_CalcCRC32(const struct MATHCRC32Table *table, const void *data, u32 dataLength);
+void MATHi_CRC32UpdateRev(const struct MATHCRC32Table *table, MATHCRC32Context *context, const void *input, u32 length);
+u16 MATH_CalcCRC16CCITT(const struct MATHCRC16Table *table, const void *data, u32 dataLength);
+void MATHi_CRC16Update(const struct MATHCRC16Table *table, MATHCRC16Context *context, const void *input, u32 length);
+u16 MATH_CalcCRC16(const struct MATHCRC16Table *table, const void *data, u32 dataLength);
+void MATHi_CRC16UpdateRev(const struct MATHCRC16Table *table, MATHCRC16Context *context, const void *input, u32 length);
+u8 MATH_CalcCRC8(const struct MATHCRC8Table *table, const void *data, u32 dataLength);
+void MATHi_CRC8Update(const struct MATHCRC8Table *table, MATHCRC8Context *context, const void *input, u32 length);
+void MATHi_CRC32InitTableRev(struct MATHCRC32Table *table, u32 poly);
+void MATHi_CRC16UpdateRev(const struct MATHCRC16Table *table, MATHCRC16Context *context, const void *input, u32 length);
+void MATHi_CRC16Update(const struct MATHCRC16Table *table, MATHCRC16Context *context, const void *input, u32 length);
+void MATHi_CRC16InitTableRev(struct MATHCRC16Table *table, u16 poly);
+void MATHi_CRC16InitTable(struct MATHCRC16Table *table, u16 poly);
+void MATHi_CRC8Update(const struct MATHCRC8Table *table, MATHCRC8Context *context, const void *input, u32 length);
+void MATHi_CRC8InitTable(struct MATHCRC8Table *table, u8 poly);
+
+static inline void MATH_CRC16InitTable(struct MATHCRC16Table * table)
+{
+    MATHi_CRC16InitTable(table, MATH_CRC16_CCITT_POLY);
+}
+
+#endif