Redis how to make zset::score upgrade from 64bit to 128bit or more ?

sorry my poor english ...

how to make zset::score use more bytes like 128bit ? I need like decimal{20} (can't lost any digis) , but zset::score only decimal{16} , so I think it can be fix the source code to support it , but how to do it ? has and resource or patch ? or has any ( plugin / extension / way / algorithm ) to support it ?

Comment From: yoav-steinberg

The zset score is a double precision floating point number. If that isn't enough you may write an module (https://redis.io/topics/modules-intro) or just fork the project and try to extend the existing zset.