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Author SHA1 Message Date
nicoo
36a2948959 factor::miller_rabin: Avoid unecessary exponentiation 
Instead of computing a^r and a^(n-1) = a^(r 2ⁱ) separately,
compute the latter by repeatedly squaring the former.

33.6% performance improvement
 2020-05-24 19:10:34 +02:00
nicoo
543c7b941a factor::rho: Small refactor 2020-05-24 19:10:29 +02:00
nicoo
30fd6a0309 factor::numeric: Replace lose functions with an Arithmetic trait 2020-05-24 18:16:21 +02:00
nicoo
29eb8fd77b format: Make clippy happy 2020-05-24 17:06:19 +02:00
nicoo
8241037690 factor::miller_rabin: Extract dividers from the primality test 
Another 36% improvement.
 2020-05-24 15:41:23 +02:00
nicoo
6b9585b1dc factor::miller_rabbin: Refactor before extracting dividers 
Replace iterated division with u64::trailing_zeros, hoist the selection of `mul`
out of the loop, another cool 49.5% runtime improvement.
 2020-05-24 15:41:23 +02:00
nicoo
e3ecc81d97 factor: Move the Miller-Rabin primality test to its own module. 2020-05-24 15:41:23 +02:00
nicoo
74054feb94 factor::factor: Remove extraneous call to the primality test 
Another 6.97% runtime improvement
 2020-05-24 15:41:23 +02:00
nicoo
e1a6dbe619 factor::table: Remove obsolete, commented code 2020-05-24 15:41:23 +02:00
nicoo
169740629b factor::table: Remove extraneous calls to the primality test 
50% performance improvement on factoring all numbers between 2 and 10⁶.
 2020-05-24 15:41:23 +02:00
nicoo
418fd61759 factor::factor: Short-circuit the fallback to Pollard's rho 
When the remainder is smaller than the max. entry in the table,
it is guaranteed to be prime.
 2020-05-24 15:41:23 +02:00
nicoo
bc11e57962 factor::factor: Use u64::trailing_zero instead of iterated division 
No significant performance impact (most of the time is spent elsewhere),
but an easy and satisfying fix nevertheless.
 2020-05-24 15:41:23 +02:00
nicoo
a1b2522750 factor: Move each factorisation method to its own module 
Also decoupled the factorisation methods; now factor::factor contains
the logic that chains the different algorithms and aggregates results.

As a side-effect, rho::factor now performs extraneous allocations (as each
recursive step creates a new `Factors` value, which is then aggregated into
the previous one) but there is no significant performance impact.
 2020-05-24 15:41:23 +02:00
nicoo
d9095a2539 factor: Refactor (eheh) around a Factors datatype 
It is clearer to see what is going on, as opposed to passing around an
unmarked `Vec<u64>`, and there is a single place to add invariants checks.

This is also a more compact memory representation: each prime factor is
represented only once, with an additional byte for multiplicity.  The
performance impact is however not significant.
 2020-05-24 15:41:23 +02:00
Sylvestre Ledru
75b7f768ea
fix(mv): Allow move across file systems (#1524) 
Co-authored-by: Arni Dagur <arni@dagur.eu>
 2020-05-24 12:49:56 +02:00
Sylvestre Ledru
272b66aac8
refactor(hostname): use clap instead of getopts for consistency (#1516) 
* refactor(hostname): use clap instead of getopts for consistency

* deps ~ uucore/wide is required

Co-authored-by: Roy Ivy III <rivy.dev@gmail.com>
 2020-05-22 17:27:03 +02:00
Sylvestre Ledru
817a237821
Merge pull request #1513 from sylvestre/uptime-since 
feature(uptime): add option --since
 2020-05-21 22:18:52 +02:00
Sylvestre Ledru
2fe2fe7275
be less prescriptive with clap versions (#1514) 2020-05-21 22:18:13 +02:00
Sylvestre Ledru
0a02aeda71
refactor(hostname): rely on the hostname crate (#1517) 2020-05-21 10:58:38 +02:00
Sylvestre Ledru
3994af5678
Update src/uu/uptime/src/uptime.rs 
Co-authored-by: Roy Ivy III <rivy.dev@gmail.com>
 2020-05-21 10:58:23 +02:00
Sylvestre Ledru
340b5badda
Update src/uu/uptime/src/uptime.rs 
Co-authored-by: Roy Ivy III <rivy.dev@gmail.com>
 2020-05-21 10:58:15 +02:00
Sylvestre Ledru
186c173559
test(hostname): Test more options (#1515) 2020-05-18 23:07:21 +02:00
Sylvestre Ledru
6bc9b38fa9 fix(cp): Remove an unused dep to the getops crate 2020-05-17 12:09:55 +02:00
Sylvestre Ledru
719f2bf8ae feature(uptime): add option --since 
For this, I:
* moved from getops to clap
* remove the millisecond maths
 2020-05-17 11:50:08 +02:00
Roy Ivy III
8e886c30dc
Merge pull request #1511 from sylvestre/more 
fix(more) handle no arguments without panic; add test and a FixME
 2020-05-15 19:17:01 -05:00
Sylvestre Ledru
62901490e1 test(more): add a test for more when called without arg 2020-05-15 18:17:57 -05:00
Sylvestre Ledru
2c90932ec0 test(uptime): Add a test (#1512) 2020-05-15 18:09:10 -05:00
Sylvestre Ledru
601690b079 test(expand): Add some tests for expand (#1505) 2020-05-15 18:09:10 -05:00
Sylvestre Ledru
80203a7a02 fix(more) Return a proper error message when no argument is provided 
Fix #1509
 2020-05-15 17:48:35 -05:00
Sylvestre Ledru
0ca5132a06
test(whoami): Add test for whoami (#1506) 
* test(whoami): Add test for whoami

Side effect: also tests "id -un"
 2020-05-15 14:19:40 +02:00
Sylvestre Ledru
157dc38492 quick fix(coverage): grcov arg 'output-file' has been renamed to 'output-path' 2020-05-13 11:01:41 +02:00
Roy Ivy III
9052bc4de7
Merge pull request #1503 from sylvestre/arch 
test(arch): add tests and description text
 2020-05-10 20:11:10 -05:00
Sylvestre Ledru
279de2d664
Merge pull request #1510 from sylvestre/negative_lines 
feature(head): Introduce NLines to handle negative lines parameters
 2020-05-10 22:50:41 +02:00
Anuvrat Parashar
ce064dc62e feature(head): Introduce NLines to handle negative lines parameters 2020-05-10 21:32:48 +02:00
Sylvestre Ledru
1565f4d1d9
Update src/uu/arch/src/arch.rs 
Co-authored-by: Roy Ivy III <rivy.dev@gmail.com>
 2020-05-10 21:05:38 +02:00
Roy Ivy III
7b96432eff
Merge pull request #1504 from sylvestre/fmt 
test(fmt): add some small initial tests
 2020-05-10 12:25:18 -05:00
Roy Ivy III
6e77f99f61
Merge pull request #1507 from sylvestre/id 
add/id ~ long option variant and tests
 2020-05-10 12:21:07 -05:00
Sylvestre Ledru
a83fe2f098
Merge pull request #1508 from muskuloes/master 
Flush output buffer for expand/unexpand commands
 2020-05-09 21:17:58 +02:00
muskuloes
c84f89257e fix clippy warning: extract function 2020-05-09 19:28:13 +02:00
muskuloes
b4752e079f flush output of unexpand command as well 2020-05-09 19:28:13 +02:00
muskuloes
fb8f3ebf96 expand: flush output buffer 2020-05-09 19:28:13 +02:00
Sylvestre Ledru
91ac5343db
remove artifact 2020-05-09 10:23:03 +02:00
Sylvestre Ledru
9fb00df9b3 test(id): add tests for id 2020-05-09 00:14:10 +02:00
Sylvestre Ledru
90dfa70bd3 feature(id): add --user, --group & --groups 2020-05-09 00:07:04 +02:00
Sylvestre Ledru
614bcde9ea Merge branch 'elgris-sort_impl' 2020-05-08 01:09:43 +02:00
Sylvestre Ledru
437e3aeab7 style(sort): Fix a clippy warning 2020-05-07 23:13:11 +02:00
elgris
71ba8b3fd6 sort: add "dictionary-order" flag. 
The flag makes 'sort' command ignore non-dictionary symbols
(non-alphanumeric and non-spaces). The only difference with GNU sort is
that it takes ALL alphanumeric symbols, not only ASCII ones.
 2020-05-07 23:08:24 +02:00
Sylvestre Ledru
f44e5465b8 cleanup(yes, whoami): remove some old workaround to force cargo rebuilds 2020-05-06 23:39:49 +02:00
Sylvestre Ledru
16bf4b1893 test(arch): Add some tests 2020-05-06 00:39:13 +02:00
Sylvestre Ledru
9b0129716f test(fmt): Add some tests for fmt 
Even if it is a bit broken for now
 2020-05-06 00:38:22 +02:00