local x = 1.01

local t = os.clock()
for i = 1, 1000000 do
	local y = math.ceil(x)
end

print(os.clock() - t)
local math_ceil = math.ceil

--local type1 = type
t = os.clock()
for i = 1, 1000000 do
	local y = math_ceil(x)
end
print(os.clock() - t)

os.execute("PAUSE")