cbrt: Value mismatch between Presto and Velox

[peterenescu]

Description

Value mismatch between Presto and Velox for function cbrt found by fuzzer.

Error Reproduction

Velox:

presto:di> SELECT cbrt(c0) from (values (0.7923892922699451)) t(c0);
       _col0        
--------------------
 0.9253645671870919

Presto:

presto> SELECT cbrt(c0) from (values (0.7923892922699451)) t(c0);
       _col0       
-------------------
 0.925364567187092
(1 row)

[kagamiori]

These two numbers are very close. Fuzzer should compare these two numbers with epsilon and consider them to be equal. Not sure whether fuzzer fails to do that. Could you share the original error log from fuzzer to help us understand what's wrong?