#11475: improve prime_pi (speedup + small fixes)
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Reporter: rohana | Owner: was
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.7.1
Component: number theory | Keywords: primes, prime counting, prime_pi
Work_issues: | Upstream: N/A
Reviewer: | Author: R. Andrew Ohana
Merged: | Dependencies:
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Comment(by leif):
Replying to [comment:37 rohana]:
> Replying to [comment:35 leif]:
> > Replying to [comment:33 rohana]:
> > > I have verified that `prime_pi` gives correct output for `i*10**12`
with `0 <= i <= 1000` on x86_64 :).
> >
> > Besides a couple of other values on individual machines,
> Which machines have you had issues with?
Oh, I didn't get any wrong results; I just meant I've also tested
`prime_pi(x)` with some "random" values (besides the mentioned powers of 2
and ten), but not systematically on all machines (all Linux boxes;
Pentium4 Northwood, P4 Prescott and Core2).
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11475#comment:38>
Sage <http://www.sagemath.org>
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