#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):
Andrew, do you have some examples of wrong prime counts (beyond 2^49^),
and if so, on what kind of systems does one experience them?
While the old implementation was said to fail on (at least some) 32-bit
systems for large inputs, the new one in contrast fails on 64-bit systems?
(More or less just curious; perhaps I'll ''one day''^TM^ try to track this
down, depending on the affected system(s) as well.)
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11475#comment:8>
Sage <http://www.sagemath.org>
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