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huffman_v1.0
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bits.h
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1992-01-18
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717b
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28 lines
/*
* bits.h - bit manipulation functions definition
*
* Bruno Costa & Lucia Darsa - 14 Sep 90 - 14 Sep 90
*/
typedef struct bitstream_ { /* up to 128 bits long stream */
unsigned long data[4];
unsigned short int len;
} bitstream;
#define flushbits(file) putbit(EOF,file)
int lshiftn (bitstream *bits, int n, unsigned long int *carry);
void rshiftn (bitstream *bits, int n);
int lshift (bitstream *bits);
void rshift (bitstream *bits);
int putbit (int bit, FILE *f);
int getbit (FILE *f, unsigned long int maxsize);
int writebyte (int data, FILE *f);
int readbyte (FILE *f);
int writelong (unsigned long int data, FILE *f);
unsigned long int readlong (FILE *f);
int writebits (bitstream *bits, FILE *f);