#ifndef RNGLIB_H#define RNGLIB_H #ifdef __cplusplusextern "C" {       #endif


typedef struct {	int 	pToBuf;	int 	pFromBuf;	int 	bufSize;	char    *buf;}RING;typedef RING *RING_ID;


RING_ID rngCreate(int nbytes );
void rngDelete(RING_ID ringId);
void rngFlush(RING_ID ringId);
int rngBufGet(RING_ID rngId,char *buffer,int maxbytes);
int rngBufPut(RING_ID rngId,char *buffer,int nbytes );
int rngIsEmpty(RING_ID ringId);
int rngNBytes(RING_ID ringId);

#ifdef __cplusplus}#endif #endif  /* RNGLIB_H */