genericopenlibs/cstdlib/LSTDIO/REWIND.C
changeset 0 e4d67989cc36
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/genericopenlibs/cstdlib/LSTDIO/REWIND.C	Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,71 @@
+/* REWIND.C
+ * 
+ * Portions Copyright (c) 1990-1999 Nokia Corporation and/or its subsidiary(-ies).
+ * All rights reserved.
+ */
+
+/*
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/*
+FUNCTION
+<<rewind>>---reinitialize a file or stream
+
+INDEX
+	rewind
+
+ANSI_SYNOPSIS
+	#include <stdio.h>
+	void rewind(FILE *<[fp]>);
+
+TRAD_SYNOPSIS
+	#include <stdio.h>
+	void rewind(<[fp]>)
+	FILE *<[fp]>;
+
+DESCRIPTION
+<<rewind>> returns the file position indicator (if any) for the file
+or stream identified by <[fp]> to the beginning of the file.  It also
+clears any error indicator and flushes any pending output.
+
+RETURNS
+<<rewind>> does not return a result.
+
+PORTABILITY
+ANSI C requires <<rewind>>.
+
+No supporting OS subroutines are required.
+*/
+
+#include <stdio.h>
+/**
+Repositions the file pointer to the beginning of a stream.
+Sets the file pointer associated with the stream 
+to the beginning of the file.
+@param Pointer to an open file.
+*/
+EXPORT_C void
+rewind (FILE * fp)
+{
+  (void) fflush (fp);
+  clearerr (fp);
+  if (fp->_seek == NULL)
+    return;			/* ??? */
+  fp->_r = 0;
+  fp->_p = fp->_bf._base;
+  (void) (*fp->_seek) (fp->_cookie, (fpos_t) 0, SEEK_SET);
+}