local number = 512.0
local log_base = 8.0
local result = math.log(number, log_base)
-- result = 3.0
-- No constant e: it is math.exp(1)
local e = math.exp(1)
-- e = 2.718281828459
-- One argument: natural log
local ln = math.log(e)
-- ln = 1.0
print("result = " .. result)
print("e = " .. e)
print("ln = " .. ln)