#define RSInforBit 6                        /* RS code over GF(2^RSInforBit) */

#define RSInforSym 43                       /* Number of information symbols */

#define RSTotalSym ((1 << RSInforBit) - 1)  /* Number of total symbols in RS */


typedef unsigned short DType;

#if (RSInforBit <= 8)
typedef short WordType;
#else
typedef int WordType;
#endif

/* Initialization function */
void Init_RS(void);

/* These two functions must be called in this order (by Init_RS())

 * before any encoding/decoding
 */
void Generate_GF(void);	                    /* Generate Galois Field         */

void Generate_Poly(void);	                /* Generate generator polynomial */


/* Reed-Solomon encoding:
 * SourceData[] is the input block, parity symbols are placed in PariData[];

 * PariData[] may lie past the end of the data, e.g., for (255,223):

 * Enncode_RS(&SourceData[0],&SourceData[223]);

 */

void Encode_RS(DType SourceData[], DType PariData[]);


/* Reed-Solomon error decoding:

 * The received block goes into ComData[];

 * The decoder corrects the symbols in place, if possible and returns

 * the number of corrected symbols. If the codeword is illegal or

 * uncorrectible, the data array is unchanged and -1 is returned;

 */

WordType Decode_RS(DType ComData[]);


int min(int a, int b);