#7013: [with patch, needs work] prime_pi and nth_prime
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Reporter: kevin.stueve | Owner: kevin.stueve
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-4.3.3
Component: number theory | Keywords: primes, sieve, table,LMO
Author: Kevin Stueve | Upstream: N/A
Reviewer: was,robertwb,GeorgSWeber | Merged:
Work_issues: |
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Comment(by leif):
Replying to [comment:44 kevin.stueve]:
> I think that whatever sort of table is used, it needs to have a header
that specifies the format.
Yes. For any sort of ''binary'' file, I was thinking of just reserving the
first 1024 bytes, which should be enough space for various information.
Such ''fixed-size'' header can easily be [partially] skipped if the
program does not implement the latest file [header] format version.
We could even use this convention for text files, and start each file with
a zero-terminated short ASCII string, s.t.
{{{
u...@machine~/somewhere$ head some_file_of_unknown_format
}}}
gives a machine- '''and''' human-understandable brief description (at
least of its type and file format version).
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7013#comment:45>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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