public int size() { return map.size(); }
public double put(float key, double value) { return map.put(key, value); }
public double remove(float key) { return map.remove(key); }
public boolean isEmpty() { return map.isEmpty(); }
public double get(float key) { return map.get(key); }
public boolean containsValue(double value) { return map.containsValue(value); }
public boolean containsKey(float key) { return map.containsKey(key); }
public void clear() { map.clear(); }