File: so_random.rb

package info (click to toggle)
ruby2.7 2.7.4-1%2Bdeb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 112,576 kB
  • sloc: ruby: 849,454; ansic: 697,834; yacc: 45,100; xml: 25,367; pascal: 10,051; javascript: 6,575; sh: 3,848; makefile: 759; cpp: 713; asm: 333; python: 295; lisp: 97; sed: 94; perl: 62; awk: 36
file content (20 lines) | stat: -rw-r--r-- 289 bytes parent folder | download | duplicates (12) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
# from http://www.bagley.org/~doug/shootout/bench/random/random.ruby

IM = 139968.0
IA = 3877.0
IC = 29573.0

$last = 42.0

def gen_random(max)
  (max * ($last = ($last * IA + IC) % IM)) / IM
end

N = 3_000_000

i = 0
while i<N
  i +=1
  gen_random(100.0)
end
# "%.9f" % gen_random(100.0)