presto-main/src/main/java/io/prestosql/operator/scalar/QuantileDigestFunctions.java/QuantileDigestFunctions/valueAtQuantileReal
class QuantileDigestFunctions:    @ScalarFunction("value_at_quantile")
    @Description("Given an input q between [0, 1], find the value whose rank in the sorted sequence of the n values represented by the qdigest is qn.")
    @SqlType(StandardTypes.REAL)
    public static long valueAtQuantileReal(@SqlType("qdigest(real)") Slice input, @SqlType(StandardTypes.DOUBLE) double quantile)
    {
        return floatToRawIntBits(sortableIntToFloat((int) valueAtQuantileBigint(input, quantile)));
    }