NAME

     fseek, ftell, rewind - reposition a stream


SYNOPSIS

     #include <stdio.h>

     int fseek(FILE *stream, long offset, int ptrname)
     long ftell(FILE *stream)
     void rewind(FILE *stream)


DESCRIPTION

     Fseek sets the position of the next input or  output  opera-
     tion  on the stream.  The new position is at the signed dis-
     tance offset bytes from the beginning, the current position,
     or  the  end of the file, according as ptrname has the value
     0, 1, or 2.

     Fseek undoes any effects of ungetc(3).

     Ftell returns the current value of the  offset  relative  to
     the  beginning of the file associated with the named stream.
     It is measured in bytes on UNIX; on some other systems it is
     a  magic  cookie,  and  the  only foolproof way to obtain an
     offset for fseek.

     Rewind(stream) is equivalent to fseek(stream, 0L, 0).


SEE ALSO

     lseek(2), fopen(3).


DIAGNOSTICS

     Fseek returns -1 for improper seeks, otherwise zero.