#include <stdlib.h>
#include <string.h>
-char *jacu_mtf(char *datos, int len, char **_z, int *z_len);
+unsigned char *jacu_mtf(unsigned char *datos, int len, unsigned char **_z, int *z_len);
-char *jacu_mtf_inv(char *z, unsigned char *pos, int len);
+unsigned char *jacu_mtf_inv(unsigned char *z, unsigned char *pos, int len);
-char *jacu_buscar_z(char* datos, int len, int *size);
+unsigned char *jacu_buscar_z(unsigned char* datos, int len, int *size);
#endif