70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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//
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// Copyright (c) 2006 Georgia Tech Research Corporation
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License version 2 as
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// published by the Free Software Foundation;
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// Author: Rajib Bhattacharjea<raj.b@gatech.edu>
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//
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// Ported from:
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// Georgia Tech Network Simulator - Manage 32 bit unsigned sequence numbers
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// George F. Riley. Georgia Tech, Spring 2002
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#ifndef __seq_h__
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#define __seq_h__
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#include <stdint.h>
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#define MAX_SEQ ((uint32_t)0xffffffff)
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/**
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* \ingroup tcp
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*
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* \brief Class to manage arithmetic operations on sequence numbers (mod 2^32)
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*/
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class SequenceNumber {
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public:
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SequenceNumber () : seq(0) { }
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SequenceNumber (const uint32_t s) : seq (s) { }
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operator uint32_t () const { return seq;}
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SequenceNumber& operator= (const uint32_t s) { seq = s; return *this;}
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SequenceNumber& operator+= (const uint32_t s) { seq += s; return *this;}
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SequenceNumber operator++ () { seq++; return *this;}
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SequenceNumber operator++ (int) { SequenceNumber ss (seq); seq++; return ss;}
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SequenceNumber& operator-= (const uint32_t s) { seq -= s; return *this;}
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SequenceNumber operator-- () { seq--; return *this;}
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SequenceNumber operator-- (int) { SequenceNumber ss (seq); seq--; return ss;}
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public:
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uint32_t seq;
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};
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// Comparison operators
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bool operator< (const SequenceNumber l, const SequenceNumber r);
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bool operator<= (const SequenceNumber l, const SequenceNumber r);
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bool operator> (const SequenceNumber l, const SequenceNumber r);
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bool operator>= (const SequenceNumber l, const SequenceNumber r);
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// Non-member arithmetic operators
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SequenceNumber operator+ (const SequenceNumber l, const SequenceNumber r);
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SequenceNumber operator- (const SequenceNumber l, const SequenceNumber r);
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#endif
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