P4PServer.java `=>` Util.java if `delta = 2`, then `l2_norm_549OR219_Util_randVector = 2.19` if `delta=0.5`, then `l2_norm_549OR219_Util_randVector = 5.49` https://github.com/SheldonHH/p4p/blob/9b7d60094e1035fbea968057f07922f139a2dbdc/src/java/p4p/util/Util.java#L845 https://github.com/SheldonHH/p4p/blob/9b7d60094e1035fbea968057f07922f139a2dbdc/src/java/p4p/util/Util.java#L861