Pokeylope at 15:31, 11 June 2021

2021-06-11T15:31:29Z

Pokeylope at 22:16, 3 June 2021

2021-06-03T22:16:10Z

Pokeylope at 21:18, 3 June 2021

2021-06-03T21:18:13Z

Pokeylope: Created page with "local mt = require "Module:Mt19937ar" function bit_length(n) local l = 0 while n > 0 do l = l + 1 n = bit32.rshift(n, 1) end return l end local pyrandom = {} functio..."

2021-06-03T21:08:13Z

Created page with "local mt = require "Module:Mt19937ar" function bit_length(n) local l = 0 while n > 0 do l = l + 1 n = bit32.rshift(n, 1) end return l end local pyrandom = {} functio..."

New page

local mt = require "Module:Mt19937ar"

function bit_length(n)
local l = 0
while n > 0 do
l = l + 1
n = bit32.rshift(n, 1)
end
return l
end

local pyrandom = {}
function pyrandom.new(str)
local instance = {}

function instance:seed(str)
local seed = ""
for i = 1, #str do
seed = seed .. string.format('%02x', string.byte(str, i))
end
seed = seed .. mw.hash.hashValue("sha512", str)
seed = string.rep('0', (8 - (#seed % 8)) % 8) .. seed
seed_array = {}
for i = #seed, 1, -8 do
table.insert(seed_array, tonumber(string.sub(seed, i-7, i), 16))
end
local mt = mt.new()
mt:init_by_array(seed_array)
return mt
end

local rand = instance:seed(str)

function instance:random()
return rand:genrand_res53()
end

function instance:getrandbits(k)
if k == 0 then
return 0
end

return bit32.rshift(rand:genrand_int32(), (32 - k))
end

function instance:_randbelow(n)
if n == 0 then
return 0
end
local k = bit_length(n)
local r = self:getrandbits(k)
while r >= n do
r = self:getrandbits(k)
end
return r
end

function instance:randrange(start, stop)
if (stop == nil) then
return self:_randbelow(start)
end

return start + self:_randbelow(stop)
end

function instance:choice(array)
local r = self:_randbelow(#array - 1)
return array[r + 1]
end

local gauss_next = nil
function instance:gauss(mu, sigma)
local z = gauss_next
gauss_next = nil
if z == nil then
local x2pi = self:random() * math.pi * 2
local g2rad = math.sqrt(-2.0 * math.log(1.0 - self:random()))
z = math.cos(x2pi) * g2rad
gauss_next = math.sin(x2pi) * g2rad
end
return mu + z * sigma
end

return instance
end

return pyrandom

@@ Line 62: / Line 62: @@
 		end
-		return start + self:_randbelow(stop)
+		return start + self:_randbelow(stop - start)
 	end

← Older revision		Revision as of 21:18, 3 June 2021
Line 1:		Line 1:
		+	local bit32 = require "bit32"
	local mt = require "Module:Mt19937ar"		local mt = require "Module:Mt19937ar"

@@ Line 66: / Line 66: @@
 	function instance:choice(array)
-		local r = self:_randbelow(#array - 1)
+		local r = self:_randbelow(#array)
 		return array[r + 1]
 	end

Module:Pyrandom - Revision history

Pokeylope at 15:31, 11 June 2021

Pokeylope at 22:16, 3 June 2021

Pokeylope at 21:18, 3 June 2021

Pokeylope: Created page with "local mt = require "Module:Mt19937ar" function bit_length(n) local l = 0 while n > 0 do l = l + 1 n = bit32.rshift(n, 1) end return l end local pyrandom = {} functio..."