#11475: improve prime_pi (speedup + small fixes)
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Reporter: rohana | Owner: was
Type: enhancement | Status:
positive_review
Priority: major | Milestone: sage-5.1
Component: number theory | Resolution:
Keywords: primes, prime counting, prime_pi | Work issues:
Report Upstream: N/A | Reviewers: Yann
Laigle-Chapuy, Leif Leonhardy
Authors: R. Andrew Ohana | Merged in:
Dependencies: | Stopgaps:
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Comment (by kcrisman):
On the plus side, this fixes some of #6876. On the down side:
{{{
WARNING: we draw the plot of ``prime_pi`` as a stairstep function with
explicitly drawn vertical lines where the function jumps. Technically
Technically there should not be any vertical lines, but they make the
graph look much better, so we include them. Use the option
``vertical_lines=False`` to turn these off.
}}}
I'm adding a fix for the latter, and a doctest for the former. Shouldn't
affect anything.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11475#comment:60>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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