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authorTobias Klauser <tklauser@distanz.ch>2008-01-27 11:37:44 +0100
committerTobias Klauser <tklauser@xenon.tklauser.home>2008-01-27 11:37:44 +0100
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+<TITLE>fseek</TITLE>
+<body bgcolor="#ffffcc">
+<hr>
+<pre>
+
+
+
+<h3>FSEEK(3) Linux Programmer's Manual FSEEK(3)
+</h3>
+
+<h3>NAME
+</h3> fgetpos, fseek, fsetpos, ftell, rewind - reposition a
+ stream
+
+<h3>SYNOPSIS
+</h3> #include &lt;stdio.h&gt;
+
+ int fseek( FILE *stream, long offset, int whence);
+ long ftell( FILE *stream);
+ void rewind( FILE *stream);
+ int fgetpos( FILE *stream, fpos_t *pos);
+ int fsetpos( FILE *stream, fpos_t *pos);
+
+<h3>DESCRIPTION
+</h3> The fseek function sets the file position indicator for
+ the stream pointed to by stream. The new position, mea-
+ sured in bytes, is obtained by adding offset bytes to the
+ position specified by whence. If whence is set to
+ SEEK_SET, SEEK_CUR, or SEEK_END, the offset is relative to
+ the start of the file, the current position indicator, or
+ end-of-file, respectively. A successful call to the fseek
+ function clears the end-of-file indicator for the stream
+ and undoes any effects of the ungetc(3) function on the
+ same stream.
+
+ The ftell function obtains the current value of the file
+ position indicator for the stream pointed to by stream.
+
+ The rewind function sets the file position indicator for
+ the stream pointed to by stream to the beginning of the
+ file. It is equivalent to:
+
+ (void)fseek(stream, 0L, SEEK_SET)
+
+ except that the error indicator for the stream is also
+ cleared (see clearerr(3).
+
+ The fgetpos and fsetpos functions are alternate interfaces
+ equivalent to ftell and fseek (with whence set to
+ SEEK_SET), setting and storing the current value of the
+ file offset into or from the object referenced by pos. On
+ some non-UNIX systems an fpos_t object may be a complex
+ object and these routines may be the only way to portably
+ reposition a text stream.
+
+<h3>RETURN VALUES
+</h3> The rewind function returns no value. Upon successful
+ completion, fgetpos, fseek, fsetpos return 0, and ftell
+ returns the current offset. Otherwise, -1 is returned and
+ the global variable errno is set to indicate the error.
+
+<h3>ERRORS
+</h3> EBADF The stream specified is not a seekable stream.
+
+
+
+
+<h3>BSD MANPAGE 29 November 1993 1
+</h3>
+
+
+
+
+<h3>FSEEK(3) Linux Programmer's Manual FSEEK(3)
+</h3>
+
+ EINVAL The whence argument to fseek was not SEEK_SET,
+ SEEK_END, or SEEK_CUR.
+
+ The function fgetpos, fseek, fsetpos, and ftell may also
+ fail and set errno for any of the errors specified for the
+ routines fflush(3), fstat(2), lseek(2), and malloc(3).
+
+</pre>
+<hr>
+<h3>SEE ALSO
+</h3><p>
+<a href=lseek.htm>lseek</a>,
+<pre>
+
+<h3>STANDARDS
+</h3> The fgetpos, fsetpos, fseek, ftell, and rewind functions
+ conform to ANSI C3.159-1989 (``ANSI C'').
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+<h3>BSD MANPAGE 29 November 1993 2
+</h3>
+
+ </pre>
+<P>
+<hr>
+<p>
+<center>
+<table border=2 width=80%>
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+
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