/** @file list2803.cpp */
/** Listing 28-3. Implementing the < Operator for rational */
/// Compare two rational numbers for less-than.
bool operator<(rational const& a, rational const& b)
{
  return a.numerator * b.denominator < b.numerator * a.denominator;
}

/// Compare two rational numbers for less-than-or-equal.
inline bool operator<=(rational const& a, rational const& b)
{
  return not (b < a);
}