[with patch] Don't factor discriminant for quadratic number fields
|Reported by:||robertwb||Owned by:||robertwb|
|Report Upstream:||Work issues:|
The current implementation of quadratic number fields calculates the discriminant on initialization, which can be expensive and is unnecessary.
Elements are represented as a+b sqrt(D) / denom. I don't believe that we require D to be the discriminant, but this needs to be verified before a change is made. For efficiency reasons, it might be worth doing trial division to reduce squares of small prime powers from D, as smaller D yields faster arithmetic.
Change History (6)
Changed 9 years ago by robertwb
comment:4 Changed 9 years ago by robertwb
- Status changed from new to assigned
- Summary changed from Don't factor discriminant for quadratic number fields to [with patch] Don't factor discriminant for quadratic number fields