Function randrange

contents/IFS/code/cpp/IFS.cpp:30–32

Returns a random integer in [0, numElems-1]

// Returns a random integer in [0, numElems-1]
std::size_t randrange(std::size_t numElems) {
  return std::uniform_int_distribution<std::size_t>(0, numElems - 1)(rng());
}

// Return a random point from the non-empty PointVector
Point choose(const PointVector& points) {