local function random_normal()
    local u = math.random()
    local v = math.random()
    return math.sqrt(-2 * math.log(u, math.exp(1))) * math.cos(2 * math.pi * v)
end

local function generate()
    for _ = 0, 10 do
        local value = random_normal()
        print(value)
    end
end

generate()