Method normalize

extern/boost/boost/rational.hpp:886–916

// Normalisation
template <typename IntType>
BOOST_CXX14_CONSTEXPR void rational<IntType>::normalize()
{
    // Avoid repeated construction
    IntType zero(0);

    if (den == zero)
       BOOST_THROW_EXCEPTION(bad_rational());

    // Handle the case of zero separately, to avoid division by zero
    if (num == zero) {
        den = IntType(1);
        return;
    }

    IntType g = integer::gcd(num, den);

    num /= g;
    den /= g;

    if (den < -(std::numeric_limits<IntType>::max)()) {
        BOOST_THROW_EXCEPTION(bad_rational("bad rational: non-zero singular denominator"));
    }

    // Ensure that the denominator is positive
    if (den < zero) {
        num = -num;
        den = -den;
    }

    BOOST_ASSERT( this->test_invariant() );
}

#ifndef BOOST_NO_IOSTREAM
namespace detail {