Monday, 24 April 2017

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DicelockSecurity (version 9.X)

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DiceLock-x 9.0.0.1
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arrow DiceLock-x 9.0.0.1 arrow arithmeticFunctions.cpp
arithmeticFunctions.cpp (arithmetic functions C++ source code file) Print E-mail
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//
// Creator:    http://www.dicelocksecurity.com
// Version:    vers.9.0.0.1
//
// Copyright (C) 2008-2013 DiceLock Security, LLC. All rights reserved.
//
//                               DISCLAIMER
//
// THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// DICELOCK IS A REGISTERED TRADEMARK OR TRADEMARK OF THE OWNERS.
//
// DICELOCK IS PROTECTED BY US PATENT 7508945 AND EUROPEAN PATENT 1182777 WHERE APPLICABLE.
//
// LICENSE INFORMATION CAN BE OBTAINED AT CORPORATE WEB SITE
//
 
#include "arithmeticFunctions.h"
 
 
namespace DiceLockSecurity {
 
  // Constructor, default 
  ArithmeticFunctions::ArithmeticFunctions() {
  }
 
  // Destructor
  ArithmeticFunctions::~ArithmeticFunctions() {
  }
 
  // Indicates if the addition of two unsigned chars produces overflow
  // false -> no overflow, true -> addition produces overflow
  bool ArithmeticFunctions::SumUCIsOverflow(unsigned char a, unsigned char b) {
 
    return ( ( ((unsigned short int) a + (unsigned short int)b ) >> 8 ) != 0 );
  }
 
  // Indicates if the addition of three unsigned chars produces overflow
  // false -> no overflow, true -> addition produces overflow
  bool ArithmeticFunctions::SumUCIsOverflow(unsigned char a, unsigned char b, unsigned char c) {
 
    return ( ( (( (unsigned short int)a + (unsigned short int)b + (unsigned short int)c )) >> 8 ) != 0 );
  }
 
  // Indicates if the addition of two unsigned short ints produces overflow
  // false -> no overflow, true -> addition produces overflow
  bool ArithmeticFunctions::SumUSIsOverflow(unsigned short int a, unsigned short int b) {
 
    return ( ( ( (unsigned long int) a + (unsigned long int)b ) >> 15 ) != 0 );
  }
 
  // Indicates if the addition of three unsigned short ints produces overflow
  // false -> no overflow, true -> addition produces overflow
  bool ArithmeticFunctions::SumUSIsOverflow(unsigned short int a, unsigned short int b, unsigned short int c) {
 
    return ( ( ( (unsigned long int) a + (unsigned long int)b + (unsigned long int)c ) >> 15 ) != 0 );
  }
 
  // Indicates if the addition of two unsigned long ints produces overflow
  // false -> no overflow, true -> addition produces overflow
  bool ArithmeticFunctions::SumULIsOverflow(unsigned long int a, unsigned long int b, unsigned long int c) {
 
    return ( ( ( (unsigned long long int) a + (unsigned long long int)b + (unsigned long long int)c ) >> 31 ) != 0 );
  }
 
}