Mercurial > vim
comparison src/testdir/test_random.vim @ 18732:2513e666aa82 v8.1.2356
patch 8.1.2356: rand() does not use the best algorithm
Commit: https://github.com/vim/vim/commit/f8c1f9200c4b50969a8191a4fe0b0d09edb38979
Author: Bram Moolenaar <Bram@vim.org>
Date: Thu Nov 28 22:13:14 2019 +0100
patch 8.1.2356: rand() does not use the best algorithm
Problem: rand() does not use the best algorithm.
Solution: use xoshiro128** instead of xorshift. (Kaito Udagawa,
closes #5279)
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Thu, 28 Nov 2019 22:15:04 +0100 |
| parents | aef98a646d3e |
| children | c477006e8857 |
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| 18731:e55bced76a31 | 18732:2513e666aa82 |
|---|---|
| 1 " Tests for srand() and rand() | 1 " Tests for srand() and rand() |
| 2 | 2 |
| 3 func Test_Rand() | 3 func Test_Rand() |
| 4 let r = srand(123456789) | 4 let r = srand(123456789) |
| 5 call assert_equal([123456789, 362436069, 521288629, 88675123], r) | 5 call assert_equal([1573771921, 319883699, 2742014374, 1324369493], r) |
| 6 call assert_equal(3701687786, rand(r)) | 6 call assert_equal(4284103975, rand(r)) |
| 7 call assert_equal(458299110, rand(r)) | 7 call assert_equal(1001954530, rand(r)) |
| 8 call assert_equal(2500872618, rand(r)) | 8 call assert_equal(2701803082, rand(r)) |
| 9 call assert_equal(3633119408, rand(r)) | 9 call assert_equal(2658065534, rand(r)) |
| 10 call assert_equal(516391518, rand(r)) | 10 call assert_equal(3104308804, rand(r)) |
| 11 | 11 |
| 12 call test_settime(12341234) | 12 call test_settime(12341234) |
| 13 let s = srand() | 13 let s = srand() |
| 14 if filereadable('/dev/urandom') | 14 if filereadable('/dev/urandom') |
| 15 " using /dev/urandom | 15 " using /dev/urandom |