Method truncatedTo

base/src/main/java/net/time4j/Duration.java:2129–2152

(U unit)

     * @since   5.2
     */
    public Duration<U> truncatedTo(U unit) {

        if (this.isEmpty()) {
            return Duration.ofZero();
        }

        double min = unit.getLength();
        List<Item<U>> newItems = new ArrayList<>();

        for (Item<U> item : this.items) {
            if (Double.compare(item.getUnit().getLength(), min) >= 0) {
                newItems.add(item);
            } else {
                break;
            }
        }

        if (newItems.isEmpty()) {
            return Duration.ofZero();
        }

        return new Duration<>(newItems, this.isNegative());

    }

    /**
     * <p>Yields an approximate normalizer in steps of hours which