ftell_unloc man page on HP-UX

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fseek(3S)							     fseek(3S)

       fseek(),	 fseeko(),  rewind(),  ftell(),	 ftello()  - reposition a file
       pointer in a stream

   Obsolescent Interfaces
       sets the file-position indicator for stream.  The  new  position,  mea‐
       sured  in  bytes	 from the beginning of the file, is obtained by adding
       offset to the position specified by whence.  The specified position  is
       the  beginning  of the file for the current position for or end-of-file

       is a non-POSIX standard API provided by	the  compile  option.	It  is
       identical  to  the  except that the offset parameter is an instead of a
       All other functional behaviors, returns, and errors  are	 identical  to
       the POSIX

       If the most recent operation, other than on the stream is the file off‐
       set in the underlying open file description is adjusted to reflect  the
       location specified by the

       is equivalent to except that no value is returned.

       and undo any effects of ungetc(3S).

       After  or  the next operation on a file opened for update can be either
       input or output.	 clears the EOF indicator for  the  stream.   does  an
       implicit call (see ferror(3S)).

       returns the offset of the current byte relative to the beginning of the
       file associated with the named stream.

       is a non-POSIX standard API provided by	the  compile  option.	It  is
       identical  to  the  except  that	 it  returns an instead of a All other
       behaviors, returns, and errors are identical to the POSIX

   Obsolescent Interfaces
       and reposition a file pointer in a stream.

       and return zero if they succeed.	 Otherwise they return −1 and  set  to
       indicate the error.

       and  return  the	 current  value of the file position indicator for the
       stream measured in bytes from the beginning of  the  file.   Otherwise,
       and return −1 and set to indicate the error.

       and  do not return any value.  Therefore, any application that needs to
       detect errors should clear before calling or Then, upon completion,  if
       is non-zero, it should assume an error has occurred.

       and  fail  if the stream is unbuffered or the buffered data needs to be
       flushed, or if any of the following conditions are encountered:

	      The	      flag is set for  the  file  descriptor  and  the
			      process would be delayed in the write operation.

	      The	      stream is NULL.

	      The underlying file is not open for writing.

	      An attempt was made to write a file
			      that  exceeds  the  process's file size limit or
			      the maximum file size.  See ulimit(2).

	      The file	      offset cannot be	represented  correctly	in  an
			      object of type or size in this environment.

	      A signal was caught during the write operation.

	      The process is in a background process group
			      and  is  attempting  to write to its controlling
			      terminal, is set, the process is neither	ignor‐
			      ing  nor	blocking  the  signal, and the process
			      group of the process is orphaned.

	      There was no free space remaining on the device  containing  the

	      An attempt was made to write to a pipe
			      that  is not open for reading by any process.  A
			      signal is also sent to the process.

	      A seek operation was attempted and the file descriptor  underly‐
			      stream is associated with a pipe.

       also fail if:

	      The	      whence argument is invalid, or the file-position
			      indicator would be set to a negative value.

       Additional values may be set  by	 the  underlying  and  functions  (see
       write(2) and lseek(2)).

       On HP-UX systems, the offset returned by is measured in bytes and it is
       permissible to seek to positions relative  to  that  offset.   However,
       when  porting  to  non-HP-UX  systems,  should be used directly without
       relying on any offset obtained from because arithmetic cannot  meaning‐
       fully  be performed on such an offset if it is not measured in bytes on
       a particular operating system.

       and have no effect on streams that have been opened in append mode (see

       and  are obsolescent interfaces supported for compatibility with exist‐
       ing DCE applications. New multithreaded applications should use and

       lseek(2), write(2), ferror(3S), flockfile(3S), fopen(3S),  fgetpos(3S),
       fgetpos64(3S), ungetc(3S), thread_safety(5).


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