nis-util: lib/net_utils/network_mask_from

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00001 //
00002 // nis-util - NIS Administration Utilities
00003 // Copyright (C) 2012 Peter Miller
00004 //
00005 // This program is free software; you can redistribute it and/or modify
00006 // it under the terms of the GNU General Public License as published by
00007 // the Free Software Foundation; either version 2 of the License, or (at
00008 // your option) any later version.
00009 //
00010 // This program is distributed in the hope that it will be useful,
00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013 // General Public License for more details.
00014 //
00015 // You should have received a copy of the GNU General Public License along
00016 // with this program. If not, see <http://www.gnu.org/licenses/>.
00017 //
00018 
00019 #include <lib/net_utils.h>
00020 
00021 
00022 unsigned long
00023 network_mask_from_number(unsigned long number)
00024 {
00025     switch (network_class_from_number(number))
00026     {
00027     case 'A':
00028         return 0xFF000000;
00029 
00030     case 'B':
00031         return 0xFFFF0000;
00032 
00033     case 'C':
00034         return 0xFFFFFF00;
00035 
00036     default:
00037         return 0;
00038     }
00039 }
00040 
00041 
00042 // vim: set ts=8 sw=4 et :