add directory Minix

Minix/1.7.5/MANUALS/CAT3/FSEEK.3

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+NAME
+	  fseek, rewind, ftell - reposition a file pointer in a	stream
+SYNTAX
+	  #include <stdio.h>
+	  int fseek (stream, offset, ptrname)
+	  FILE *stream;
+	  long offset;
+	  int ptrname;
+	  void rewind (stream)
+	  FILE *stream;
+	  long ftell (stream)
+	  FILE *stream;
+DESCRIPTION
+	  Fseek	sets the position of the next input or output
+	  operation on the stream.  The	new position is	at the signed
+	  distance offset bytes	from the beginning, from the current
+	  position, or from the	end of the file, according as ptrname
+	  has the value	0, 1, or 2.
+	  Rewind(stream) is equivalent to fseek(stream,	0L, 0),	except
+	  that no value	is returned.
+	  Fseek	and rewind undo	any effects of ungetc(3S).
+	  After	fseek or rewind, the next operation on a file opened
+	  for update may be either input or output.
+	  Ftell	returns	the offset of the current byte relative	to the
+	  beginning of the file	associated with	the named stream.
+SEE ALSO
+	  lseek(2), fopen(3S), popen(3S), ungetc(3S).
+DIAGNOSTICS
+	  Fseek	returns	non-zero for improper seeks, otherwise zero.
+	  An improper seek can be, for example,	an fseek done on a
+	  file that has	not been opened	via fopen; in particular,
+	  fseek	may not	be used	on a terminal, or on a file opened via
+	  popen(3S).
+     WARNING
+	  Although on the UNIX system an offset	returned by ftell is
+	  measured in bytes, and it is permissible to seek to
+	  positions relative to	that offset, portability to non-UNIX
+	  systems requires that	an offset be used by fseek directly.
+	  Arithmetic may not meaningfully be performed on such an
+	  offset, which	is not necessarily measured in bytes.
+				  
+