presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/StandardColumnMappings.java/StandardColumnMappings/realColumnMapping
class StandardColumnMappings:    public static ColumnMapping realColumnMapping()
    {
        return ColumnMapping.longMapping(REAL, (resultSet, columnIndex) -> floatToRawIntBits(resultSet.getFloat(columnIndex)), realWriteFunction());
    }