C++ (Cpp) Fraction::DenominatorAsInt Examples

Example #1

File: fraction.cpp Project: hallca/sp16

Fraction Fraction::operator += (const Fraction& rhs)
{
    const int lcm = LCM(DenominatorAsInt(), rhs.DenominatorAsInt());
    int A = 0, B = 0;
    
    if (__builtin_mul_overflow(numerator / DenominatorAsInt(), lcm, &A)) goto err;
    if (__builtin_mul_overflow(rhs.numerator / rhs.DenominatorAsInt(), lcm, &B)) goto err;
    if (__builtin_add_overflow(A, B, &numerator)) goto err;

    denominator = lcm;

    Reduce();
    return *this;

err:
    valid = false;
    return *this;
}

Example #2

File: fraction.cpp Project: hallca/sp16

Fraction Fraction::operator *= (const Fraction& rhs)
{
    if (__builtin_mul_overflow(numerator, rhs.numerator, &numerator)) goto err;
    if (__builtin_mul_overflow(DenominatorAsInt(), rhs.DenominatorAsInt(), &denominator)) goto err;
    Reduce();
    return *this;

err:
    valid = false;
    return *this;
}

Example #3

File: fraction.cpp Project: hallca/sp16

Fraction Fraction::operator -= (const Fraction& rhs)
{
    const int lcm = LCM(DenominatorAsInt(), rhs.DenominatorAsInt());
    int A = 0, B = 0;

    if (__builtin_mul_overflow(numerator / DenominatorAsInt(), lcm, &A)) goto err;
    if (__builtin_mul_overflow(rhs.numerator / rhs.DenominatorAsInt(), lcm, &B)) goto err;
    if (__builtin_sub_overflow(A, B, &numerator)) goto err;

    denominator = lcm;

    Reduce();

//    std::cout << "result: " << *this << std::endl;
    return *this;

err:
    valid = false;
    return *this;
}

Example #4

File: fraction.cpp Project: hallca/sp16

Fraction Fraction::operator / (const Fraction& rhs) const
{
    int newNumerator = Numerator() * rhs.DenominatorAsInt();
    int newDenominator = DenominatorAsInt() * rhs.Numerator();
    return Fraction(0, newNumerator, newDenominator);
}

Example #5

File: fraction.cpp Project: hallca/sp16

Fraction Fraction::operator - (const Fraction& rhs) const
{
    const int lcm = LCM(DenominatorAsInt(), rhs.DenominatorAsInt());
    int result = (numerator * lcm / DenominatorAsInt()) - (rhs.numerator * lcm / rhs.DenominatorAsInt());
    return Fraction(0, result, lcm);
}