FSEEK(3S)           UNIX Programmer's Manual            FSEEK(3S)

NAME
     fseek, ftell, rewind - reposition a stream

SYNOPSIS
     #include <stdio.h>

     int fseek (stream, offset, ptrname)
     FILE *stream;
     long offset;
     int ptrname;

     long ftell (stream)
     FILE *stream;

     long rewind(stream)
     FILE *stream;

HP-UX COMPATIBILITY
     Level:    HP-UX/RUN ONLY

     Origin:   System III

DESCRIPTION
     _F_s_e_e_k sets the position of the next input or  output  opera-
     tion  on the _s_t_r_e_a_m.  The new position is at the signed dis-
     tance _o_f_f_s_e_t bytes from the beginning, the current position,
     or  the  end of the file, according as _p_t_r_n_a_m_e has the value
     0, 1, or 2.

     _F_s_e_e_k undoes any effects of _u_n_g_e_t_c(3S).

     After _f_s_e_e_k or _r_e_w_i_n_d, the next operation on an update  file
     may be either input or output.

     _F_t_e_l_l returns the current value of the  offset  relative  to
     the  beginning of the file associated with the named _s_t_r_e_a_m.
     The offset is measured in bytes on HP-UX; on some other sys-
     tems,  the unit of measure varies, and is the only foolproof
     way to obtain an _o_f_f_s_e_t for _f_s_e_e_k.

     _R_e_w_i_n_d(_s_t_r_e_a_m) is equivalent to _f_s_e_e_k(_s_t_r_e_a_m, 0L, 0).

SEE ALSO
     lseek(2), fopen(3S).

DIAGNOSTICS
     _F_s_e_e_k returns -1 for improper seeks, otherwise zero.

     _F_t_e_l_l returns -1 for error conditions.