public boolean sameState(final DoubleAdder other) {
		return Double.compare(_sum, other._sum) == 0 &&
			Double.compare(_simpleSum, other._simpleSum) == 0 &&
			Double.compare(_compensation, other._compensation) == 0;
	}
Check if {@code this} and the {@code other} {@code DoubleAdder} maintain
the same internal state.

@param other the other object
@return {@code true} if {@code this} and the {@code other} adder have
        the same state, {@code false otherwise}
jenetics/src/main/java/io/jenetics/internal/math/DoubleAdder.java