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Belgian Amiga Club - ADF Collection
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stdio
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fseek.c
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C/C++ Source or Header
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1989-05-14
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612b
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39 lines
#include <stdio.h>
#include <errno.h>
extern long lseek();
long ftell(fp)
register FILE *fp;
{
register long rv;
fflush(fp);
rv = lseek(fp->_file, 0L, 1);
return((rv < 0) ? ((errno = ((int) rv)), (-1)) : rv);
}
int fseek(fp, offset, origin)
register FILE *fp;
long offset;
int origin;
{
register long rv;
fflush(fp);
rv = lseek(fp->_file, offset, origin);
return((rv < 0) ? ((errno = ((int) rv)), (-1)) : 0);
}
void rewind(fp)
register FILE *fp;
{
register long rv;
fflush(fp);
rv = lseek(fp->_file, 0L, SEEK_SET);
if(rv < 0)
errno = ((int) rv);
fp->_flag &= ~(_IOEOF|_IOERR);
}