private static void check(final double quantile) {
		if (quantile < 0.0 || quantile > 1) {
			throw new IllegalArgumentException(format(
				"Quantile (%s) not in the valid range of [0, 1]", quantile
			));
		}
	}
Create a new quantile accumulator with the given value.

@param quantile the wished quantile value.
@throws IllegalArgumentException if the {@code quantile} is not in the
        range {@code [0, 1]}.
jenetics/src/main/java/io/jenetics/stat/Quantile.java