יחידה:Random

ניתן ליצור תיעוד על היחידה הזאת בדף יחידה:Random/תיעוד

local p = {}


local function getBigRandom(l, u)
	-- Gets a random integer between l and u, and is not limited to RAND_MAX.
	local r = 0
	local n = 2^math.random(30) -- Any power of 2.
	local limit = math.ceil(53 / (math.log(n) / math.log(2)))
	for i = 1, limit do
		r = r + math.random(0, n - 1) / (n^i)
	end
	return math.floor(r * (u - l + 1)) + l
end

function p.number(f)
	-- Gets a random number.
	first = tonumber(f.args[1])
	second = tonumber(f.args[2])
	-- This needs to use if statements as math.random won't accept explicit nil values as arguments.
	if first then
		if second then
			if first > second then -- Second number cannot be less than the first, or it causes an error.
				first, second = second, first
			end
			return getBigRandom(first, second)
		else
			return getBigRandom(1, first)
		end
	else
		return math.random()
	end
end

return p