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#ifndef GD_IO_H
#define GD_IO_H 1
#include <stdio.h>
typedef struct gdIOCtx {
int (*getC)(struct gdIOCtx*);
int (*getBuf)(struct gdIOCtx*, void*, int);
void (*putC)(struct gdIOCtx*, int);
int (*putBuf)(struct gdIOCtx*, const void*, int);
int (*seek)(struct gdIOCtx*, const int);
long (*tell)(struct gdIOCtx*);
void (*free)(struct gdIOCtx*);
} gdIOCtx;
typedef struct gdIOCtx *gdIOCtxPtr;
void Putword(int w, gdIOCtx *ctx);
void Putchar(int c, gdIOCtx *ctx);
void gdPutC(const unsigned char c, gdIOCtx *ctx);
int gdPutBuf(const void *, int, gdIOCtx*);
void gdPutWord(int w, gdIOCtx *ctx);
void gdPutInt(int w, gdIOCtx *ctx);
int gdGetC(gdIOCtx *ctx);
int gdGetBuf(void *, int, gdIOCtx*);
int gdGetByte(int *result, gdIOCtx *ctx);
int gdGetWord(int *result, gdIOCtx *ctx);
int gdGetInt(int *result, gdIOCtx *ctx);
int gdSeek(gdIOCtx *ctx, const int);
long gdTell(gdIOCtx *ctx);
#endif
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