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diff --git a/test/dynlib2.c b/test/dynlib2.c
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+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright by The HDF Group.                                               *
+ * Copyright by the Board of Trustees of the University of Illinois.         *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * This file is part of HDF5.  The full HDF5 copyright notice, including     *
+ * terms governing use, modification, and redistribution, is contained in    *
+ * the files COPYING and Copyright.html.  COPYING can be found at the root   *
+ * of the source code distribution tree; Copyright.html can be found at the  *
+ * root level of an installed copy of the electronic HDF5 document set and   *
+ * is linked from the top-level documents page.  It can also be found at     *
+ * http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
+ * access to either file, you may request a copy from help@hdfgroup.org.     *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/*
+ * Programmer:	Raymond Lu
+ *		13 February 2013
+ *
+ * Purpose:	Tests the plugin module (H5PL)
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+#include <hdf5.h>
+
+static size_t H5Z_filter_dynlib2(unsigned int flags, size_t cd_nelmts,
+                const unsigned int *cd_values, size_t nbytes, size_t *buf_size, void **buf);
+
+/* This message derives from H5Z */
+const H5Z_class2_t H5Z_DYNLIB2[1] = {{
+    H5Z_CLASS_T_VERS,                /* H5Z_class_t version             */
+    H5Z_FILTER_DYNLIB2,		     /* Filter id number		*/
+    1, 1,                            /* Encoding and decoding enabled   */
+    "dynlib2",			     /* Filter name for debugging	*/
+    NULL,                            /* The "can apply" callback        */
+    NULL,                            /* The "set local" callback        */
+    (H5Z_func_t)H5Z_filter_dynlib2,    /* The actual filter function	*/
+}};
+
+const H5PL_type_t   H5PL_get_plugin_type(void) {return H5PL_TYPE_FILTER;}
+const H5Z_class2_t* H5PL_get_plugin_info(void) {return H5Z_DYNLIB2;}
+
+/*-------------------------------------------------------------------------
+ * Function:	H5Z_filter_dynlib2
+ *
+ * Purpose:	A dynlib2 filter method that assigns the power of 2 of the
+ *              original value during write and calculates the square root
+ *              of the original value during read. It will be built as a 
+ *              shared library.  plugin.c test will load and use this filter 
+ *              library.    
+ *
+ * Return:	Success:	Data chunk size
+ *
+ *		Failure:	0
+ *
+ * Programmer:	Raymond Lu
+ *              29 March 2013
+ *
+ *-------------------------------------------------------------------------
+ */
+static size_t
+H5Z_filter_dynlib2(unsigned int flags, size_t cd_nelmts,
+      const unsigned int *cd_values, size_t nbytes,
+      size_t *buf_size, void **buf)
+{
+    int *int_ptr=(int *)*buf;          /* Pointer to the data values */
+    size_t buf_left=*buf_size;  /* Amount of data buffer left to process */
+
+    /* Check for the correct number of parameters */
+    if(cd_nelmts>0)
+        return(0);
+
+    if(flags & H5Z_FLAG_REVERSE) { /*read*/
+        /* Calculate and assign the square root for all the data values */
+        while(buf_left>0) {
+            *int_ptr = (int)sqrt((double)*int_ptr);
+            *int_ptr++;
+            buf_left -= sizeof(int);
+        } /* end while */
+    } /* end if */
+    else { /*write*/
+        /* Calculate and assign the power of 2 to all the data values */
+        while(buf_left>0) {
+            *int_ptr = (int)pow((double)*int_ptr, 2);
+            *int_ptr++;
+            buf_left -= sizeof(int);
+        } /* end while */
+    } /* end else */
+
+    return nbytes;
+}