X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2Fstdio%2Frewind.c;h=e7f2aac379304669829c129a444f72a8af4fa5ff;hb=9feedd59d824b75950b8d15be6a2a34534c2a6d9;hp=0dd56ae181a16742b174f4f31871e8825f1a09e8;hpb=34893ecc2200dc7017c36a54cb6c5f4c2378b5ec;p=pdclib

diff --git a/functions/stdio/rewind.c b/functions/stdio/rewind.c
index 0dd56ae..e7f2aac 100644
--- a/functions/stdio/rewind.c
+++ b/functions/stdio/rewind.c
@@ -1,8 +1,36 @@
-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
-
-void rewind( FILE * stream ) { /* TODO */ };
+/* rewind( FILE * )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <stdio.h>
+
+#ifndef REGTEST
+#include <_PDCLIB_io.h>
+
+void _PDCLIB_rewind_unlocked( FILE * stream )
+{
+    stream->status &= ~ _PDCLIB_ERRORFLAG;
+    _PDCLIB_fseek_unlocked( stream, 0L, SEEK_SET );
+}
+
+void rewind( FILE * stream )
+{
+    _PDCLIB_flockfile(stream);
+    _PDCLIB_rewind_unlocked(stream);
+    _PDCLIB_funlockfile(stream);
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+    /* Testing covered by ftell.c */
+    return TEST_RESULTS;
+}
+
+#endif