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[Octave-bug-tracker] [bug #61300] primes() is 4 times slower for integer


From: Dmitri A. Sergatskov
Subject: [Octave-bug-tracker] [bug #61300] primes() is 4 times slower for integer types than for double, patch attached
Date: Wed, 6 Oct 2021 12:02:49 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0

Follow-up Comment #1, bug #61300 (project octave):

It looks like a regression. In 6.3.1 the difference is smaller.


octave:1> n = 1.5e9; tic; p1 = primes(n); toc, tic; p2 = primes(uint64(n));
toc
Elapsed time is 4.6902 seconds.
Elapsed time is 5.02894 seconds.



Dmitri.
-- 


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