-- Chapter 13 example: math library functions.

print(math.floor(3.7))   -- 3
print(math.ceil(3.2))    -- 4
print(math.abs(-5))      -- 5
print(math.sqrt(16))     -- 4.0
print(math.min(7, 3))    -- 3
print(math.max(7, 3))    -- 7
print(math.pi)           -- 3.1415926535898