-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
-
-void setbuf( FILE * restrict stream, char * restrict buf ) { /* TODO */ };
+/* $Id$ */
+
+/* setbuf( FILE *, char * )
+
+ 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
+
+void setbuf( struct _PDCLIB_file_t * _PDCLIB_restrict stream, char * _PDCLIB_restrict buf )
+{
+ if ( buf == NULL )
+ {
+ setvbuf( stream, buf, _IONBF, BUFSIZ );
+ }
+ else
+ {
+ setvbuf( stream, buf, _IOFBF, BUFSIZ );
+ }
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+#include <stdlib.h>
+
+int main( void )
+{
+ /* TODO: Extend testing once setvbuf() is finished. */
+#ifndef REGTEST
+ char buffer[ BUFSIZ + 1 ];
+ FILE * fh;
+ /* full buffered */
+ TESTCASE( ( fh = tmpfile() ) != NULL );
+ setbuf( fh, buffer );
+ TESTCASE( fh->buffer == buffer );
+ TESTCASE( fh->bufsize == BUFSIZ );
+ TESTCASE( ( fh->status & ( _IOFBF | _IONBF | _IOLBF ) ) == _IOFBF );
+ TESTCASE( fclose( fh ) == 0 );
+ /* not buffered */
+ TESTCASE( ( fh = tmpfile() ) != NULL );
+ setbuf( fh, NULL );
+ TESTCASE( ( fh->status & ( _IOFBF | _IONBF | _IOLBF ) ) == _IONBF );
+ TESTCASE( fclose( fh ) == 0 );
+#else
+ puts( " NOTEST setbuf() test driver is PDCLib-specific." );
+#endif
+ return TEST_RESULTS;
+}
+
+#endif