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lab 1 Prokin Y.L. 3821B1PM3 #235

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lab 1 Prokin Y.L. 3821B1PM3 #235

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034d1f0
Update tbitfield.cpp
orien1719 Dec 26, 2022
65d25b2
Update tset.cpp
orien1719 Dec 26, 2022
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181 changes: 161 additions & 20 deletions src/tbitfield.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -13,86 +13,227 @@ static TBitField FAKE_BITFIELD(1);

TBitField::TBitField(int len)
{
}

TBitField::TBitField(const TBitField &bf) // конструктор копирования
{
if (len < 0)
throw ("wrong lenght");
BitLen = len;
if (len % 32 == 0)
{
MemLen = len / (sizeof(TELEM) * 8);
}
else
{
MemLen = len / (sizeof(TELEM) * 8) + 1;
}
pMem = new TELEM [MemLen] {0};
}

TBitField::TBitField(const TBitField& bf) // конструктор копирования
{
BitLen = bf.BitLen;
MemLen = bf.MemLen;
pMem = new TELEM [MemLen];
for (int i = 0; i < MemLen; i++) {
pMem[i] = bf.pMem[i];
}
}

TBitField::~TBitField()
{
BitLen = 0;
MemLen = 0;
delete[] pMem;
}

int TBitField::GetMemIndex(const int n) const // индекс Мем для бита n
{
return FAKE_INT;
if ((n < 0) || (n > BitLen))
throw ("Error input");
return n / (sizeof(TELEM) * 8);
}

TELEM TBitField::GetMemMask(const int n) const // битовая маска для бита n
{
return FAKE_INT;
if ((n < 0) || (n > BitLen))
throw ("Error input");
const int j = n % (sizeof(TELEM) * 8);
const TELEM mask = (1 << j);
return mask;
}

// доступ к битам битового поля

int TBitField::GetLength(void) const // получить длину (к-во битов)
{
return FAKE_INT;
return BitLen;
}

void TBitField::SetBit(const int n) // установить бит
{
if ((n < 0) || (n > BitLen))
{
throw ("Error input");
}
const int i = GetMemIndex(n);
const int p = GetMemMask(n);
pMem[i] = (pMem[i] | p);
}

void TBitField::ClrBit(const int n) // очистить бит
{
if ((n < 0) || (n > BitLen))
{
throw ("Error input");
}
const int i = GetMemIndex(n);
const int p = GetMemMask(n);
pMem[i] = (pMem[i] & (~p));
}

int TBitField::GetBit(const int n) const // получить значение бита
{
return FAKE_INT;
if ((n < 0) || (n > BitLen))
{
throw ("Error input");
}

const int i = GetMemIndex(n);
const int p = GetMemMask(n);
return (pMem[i] & p);
}

// битовые операции

TBitField& TBitField::operator=(const TBitField &bf) // присваивание
TBitField& TBitField::operator=(const TBitField& bf) // присваивание
{
return FAKE_BITFIELD;
BitLen = bf.BitLen;
MemLen = bf.MemLen;
pMem = new TELEM [MemLen];
for (int i = 0; i < MemLen; i++)
pMem[i] = bf.pMem[i];
return *this;
}

int TBitField::operator==(const TBitField &bf) const // сравнение
int TBitField::operator==(const TBitField& bf) const // сравнение
{
return FAKE_INT;

if (BitLen != bf.BitLen)
return 0;
for (int i = 0; i < MemLen; i++)
if (pMem[i] != bf.pMem[i])
return 0;
return 1;
}

int TBitField::operator!=(const TBitField &bf) const // сравнение
int TBitField::operator!=(const TBitField& bf) const // сравнение
{
return FAKE_INT;
//if (BitLen == bf.BitLen)
// return 0;
//for (int i = 0; i < MemLen; i++)
// if (pMem[i] == bf.pMem[i])
// return 0;
//if (BitLen == bf.BitLen)
// return 0;
//return 1;
return !(*this == bf);
}

TBitField TBitField::operator|(const TBitField &bf) // операция "или"
TBitField TBitField::operator|(const TBitField& bf) // операция "или"
{
return FAKE_BITFIELD;
int len = BitLen;
if (bf.BitLen > len)
len = bf.BitLen;
TBitField a(len);

for (int i = 0; i < a.MemLen; i++)
a.pMem[i] = pMem[i];
for (int j = 0; j < bf.MemLen; j++)
a.pMem[j] |= bf.pMem[j];
return a;
}

TBitField TBitField::operator&(const TBitField &bf) // операция "и"
TBitField TBitField::operator&(const TBitField& bf) // операция "и"
{
return FAKE_BITFIELD;
int len = BitLen;
if (bf.BitLen > len)
len = bf.BitLen;
TBitField a(len);

for (int i = 0; i < a.MemLen; i++)
a.pMem[i] = pMem[i];
for (int j = 0; j < bf.MemLen; j++)
a.pMem[j] &= bf.pMem[j];
return a;
}

TBitField TBitField::operator~(void) // отрицание
{
return FAKE_BITFIELD;
TBitField a(BitLen);
TELEM tmp = sizeof(TELEM) * 8;

for (int i = 0; i < MemLen; i++)
{
a.pMem[i] = ~pMem[i];
if (i == MemLen - 1)
{
for (int j = BitLen % tmp; j < tmp; j++)
{
a.pMem[i] &= ~(1 << j);
}
}
}

//for (int i = 0; i < MemLen; i++)
//{
// a.pMem[i] = ~pMem[i];
//}
//
//for (int i = BitLen % tmp; i < tmp; i++)
//{
// a.pMem[MemLen - 1] &= ~(1 << i);
//}
//
//........................
return a;
}

// ввод/вывод

istream &operator>>(istream &istr, TBitField &bf) // ввод
{
char c;
int i = 0;
while (true)
{
istr >> c;
if (c == '0')
{
bf.ClrBit(i);
i++;
}
else if (c == '1')
{
bf.SetBit(i);
i++;
}
else
{
break;
}
}
return istr;
}

ostream &operator<<(ostream &ostr, const TBitField &bf) // вывод
{
for (int i = 0; i < bf.BitLen; i++)
{
if (bf.GetBit(i) == 0)
{
ostr << '0';
}
else
{
ostr << '1';
}
}
return ostr;
}
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