presto-main/src/main/java/io/prestosql/operator/aggregation/RealHistogramAggregation.java/RealHistogramAggregation/add
class RealHistogramAggregation:    @InputFunction
    public static void add(@AggregationState DoubleHistogramAggregation.State state, @SqlType(StandardTypes.BIGINT) long buckets, @SqlType(StandardTypes.REAL) long value, @SqlType(StandardTypes.DOUBLE) double weight)
    {
        DoubleHistogramAggregation.add(state, buckets, intBitsToFloat((int) value), weight);
    }