*** /dev/null	Thu Dec 16 11:30:01 2010
--- src/switch_mask.c	Thu Dec 16 11:31:53 2010
***************
*** 0 ****
--- 1,60 ----
+ /*
+  * Switch_mask - utility function for creating a mask; taken from
+  * bit_operations.c - Various bit level operations, such as bit reversal
+  *
+  * Written by Steve Underwood <steveu@coppice.org>
+  *
+  * Copyright (C) 2006 Steve Underwood
+  *
+  * All rights reserved.
+  *
+  * This program is free software; you can redistribute it and/or modify
+  * it under the terms of the GNU Lesser General Public License version 2.1,
+  * as published by the Free Software Foundation.
+  *
+  * This program is distributed in the hope that it will be useful,
+  * but WITHOUT ANY WARRANTY; without even the implied warranty of
+  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  * GNU Lesser General Public License for more details.
+  *
+  * You should have received a copy of the GNU Lesser General Public
+  * License along with this program; if not, write to the Free Software
+  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+  */
+ 
+ /*! \file */
+ 
+ #if defined(HAVE_CONFIG_H)
+ #include "config.h"
+ #endif
+ 
+ #include <inttypes.h>
+ #include <stdlib.h>
+ #include <fcntl.h>
+ #include <string.h>
+ #include <assert.h>
+ #include <memory.h>
+ 
+ #include "spandsp/telephony.h"
+ 
+ SPAN_DECLARE(uint32_t) make_mask32(uint32_t x)
+ {
+     x |= (x >> 1);
+     x |= (x >> 2);
+     x |= (x >> 4);
+     x |= (x >> 8);
+     x |= (x >> 16);
+     return x;
+ }
+ /*- End of function --------------------------------------------------------*/
+ 
+ SPAN_DECLARE(uint16_t) make_mask16(uint16_t x)
+ {
+     x |= (x >> 1);
+     x |= (x >> 2);
+     x |= (x >> 4);
+     x |= (x >> 8);
+     return x;
+ }
+ /*- End of function --------------------------------------------------------*/
+ /*- End of file ------------------------------------------------------------*/