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/**
* @module cdatn
* @author Guenther Neuwirth (0626638), Manuel Mausz (0728348)
* @brief Datatype template and datatype definition for CCPU and CMem
* @date 26.05.2009
*/
#ifndef CDATN_H
#define CDATN_H 1
#include <boost/operators.hpp>
#include <iostream>
/**
* @class CDatN
*
* Datatype template for CCPU and CMem.
*/
class CDatN
: public boost::operators<CDatN>
{
private:
/**
* @method CDatN
* @brief Default ctor
* @param -
* @return -
* @globalvars none
* @exception bad_alloc
* @pre none
* @post none
*/
CDatN()
{}
public:
/**
* @method ~CDatN
* @brief Default dtor
* @param -
* @return -
* @globalvars none
* @exception none
* @pre none
* @post none
*/
virtual ~CDatN()
{}
/**
* @method CDatN
* @brief Copy constructor for CDatN
* @param other reference to CDatN which will be copied
* @return -
* @globalvars none
* @exception none
* @pre none
* @post none
*/
CDatN(const CDatN& other)
: m_value(other.m_value), m_width(other.m_width)
{}
/**
* @method CDatN
* @brief Copy constructor for int
* @param newval new value for CDatN
* @param width maximum width
* @return -
* @globalvars none
* @exception none
* @pre none
* @post none
*/
CDatN(const int newval, unsigned width = 31)
: m_value(((1 << width) - 1) & newval), m_width(width)
{}
/**
* @method getValue
* @brief returns value of CDatN
* @param -
* @return value of CDatN
* @globalvars none
* @exception none
* @pre none
* @post none
*/
int getValue() const
{
return m_value;
}
/**
* @method operator int
* @brief convert to int
* @param -
* @return int
* @globalvars none
* @exception none
* @pre none
* @post none
*/
operator int()
{
return m_value;
}
/**
* @method operator<
* @brief implementation of operator <
* @param x reference to CDatN
* @return true if cdat is less than object x
* @globalvars none
* @exception none
* @pre none
* @post none
*/
bool operator<(const CDatN& x) const
{
return m_value < x.m_value;
}
/**
* @method operator==
* @brief implementation of operator ==
* @param x reference to CDatN
* @return true if cdat equals object x
* @globalvars none
* @exception none
* @pre none
* @post none
*/
bool operator==(const CDatN& x) const
{
return m_value == x.m_value;
}
/**
* @method operator=
* @brief implementation of operator =
* @param x reference to int
* @return refecence to int
* @globalvars none
* @exception none
* @pre none
* @post none
*/
CDatN &operator=(const int& newval)
{
m_value = newval;
align();
return *this;
}
/**
* @method operator+=
* @brief implementation of operator +=
* @param x reference to CDatN
* @return refecence to CDatN
* @globalvars none
* @exception none
* @pre none
* @post none
*/
CDatN& operator+=(const CDatN& x)
{
m_value += x.m_value;
align();
return *this;
}
/**
* @method operator-=
* @brief implementation of operator -=
* @param x reference to CDatN
* @return refecence to CDatN
* @globalvars none
* @exception none
* @pre none
* @post none
*/
CDatN& operator-=(const CDatN& x)
{
m_value -= x.m_value;
align();
return *this;
}
/**
* @method operator*=
* @brief implementation of operator *=
* @param x reference to CDatN
* @return refecence to CDatN
* @globalvars none
* @exception none
* @pre none
* @post none
*/
CDatN& operator*=(const CDatN& x)
{
m_value *= x.m_value;
align();
return *this;
}
/**
* @method operator/=
* @brief implementation of operator /=
* @param x reference to CDatN
* @return refecence to CDatN
* @globalvars none
* @exception none
* @pre none
* @post none
*/
CDatN& operator/=(const CDatN& x)
{
m_value /= x.m_value;
align();
return *this;
}
/**
* @method operator%=
* @brief implementation of operator %=
* @param x reference to CDatN
* @return refecence to CDatN
* @globalvars none
* @exception none
* @pre none
* @post none
*/
CDatN& operator%=(const CDatN& x)
{
m_value %= x.m_value;
align();
return *this;
}
/**
* @method operator|=
* @brief implementation of operator |=
* @param x reference to CDatN
* @return refecence to CDatN
* @globalvars none
* @exception none
* @pre none
* @post none
*/
CDatN& operator|=(const CDatN& x)
{
m_value |= x.m_value;
align();
return *this;
}
/**
* @method operator&=
* @brief implementation of operator &=
* @param x reference to CDatN
* @return refecence to CDatN
* @globalvars none
* @exception none
* @pre none
* @post none
*/
CDatN& operator&=(const CDatN& x)
{
m_value &= x.m_value;
align();
return *this;
}
/**
* @method operator^=
* @brief implementation of operator ^=
* @param x reference to CDatN
* @return refecence to CDatN
* @globalvars none
* @exception none
* @pre none
* @post none
*/
CDatN& operator^=(const CDatN& x)
{
m_value ^= x.m_value;
align();
return *this;
}
/**
* @method operator++
* @brief implementation of operator ++
* @param -
* @return refecence to CDatN
* @globalvars none
* @exception none
* @pre none
* @post none
*/
CDatN& operator++()
{
m_value++;
align();
return *this;
}
/**
* @method operator--
* @brief implementation of operator --
* @param -
* @return refecence to CDatN
* @globalvars none
* @exception none
* @pre none
* @post none
*/
CDatN& operator--()
{
m_value--;
return *this;
}
/**
* @method operator<<
* @brief Shift/output operator for outputstream
* @param stream reference to outputstream
* @param cdat object which will be printed to stream
* @return reference to outputstream
* @globalvars none
* @exception none
* @pre none
* @post none
*/
friend std::ostream& operator<<(std::ostream& stream, CDatN cdat)
{
stream << cdat.m_value;
return stream;
}
/**
* @method operator>>
* @brief Shift/read operator for inputstream
* @param stream reference to inputstream
* @param cdat reference to object which will be read from stream
* @return reference to inputstream
* @globalvars none
* @exception none
* @pre none
* @post none
*/
friend std::istream& operator>>(std::istream & stream, CDatN& cdat)
{
stream >> cdat.m_value;
cdat.align();
return stream;
}
protected:
/**
* @method align
* @brief aligns value by width
* @return -
* @globalvars none
* @exception none
* @pre none
* @post none
*/
inline void align()
{
m_value &= ((1 << m_width) - 1);
}
/* members */
int m_value;
unsigned m_width;
};
#endif
/* vim: set et sw=2 ts=2: */
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