Doctors and scientists said that breaking the four-minute mile was impossible, that one would die in the attempt. Thus, when I got up from the track after collapsing at the finish line, I figured I was dead.
–Roger Bannister (After becoming the first person to break the four-minute mile in 1952)
gcd_euclid [edit] v0.1 Find the greatest common divisor (also known as the greatest common factor or highest common factor) of two numbers using the Euclidean algorithm.