sqrt test

local sqrt = math.sqrt

local it = 1000000

local t = os.clock()
for i = 1, it do
    local x = math.sqrt(i)
end
print("math.sqrt(x): " .. os.clock() - t)

local t = os.clock()
for i = 1, it do
    local x = sqrt(i)
end
print("sqrt(x): " .. os.clock() - t)

local t = os.clock()
for i = 1, it do
    local x = i^0.5
end
print("x^0.5: " .. os.clock() - t)