parrotcode: Euclid's algorithm  
Contents  Examples 
examples/assembly/euclid.pasm  Euclid's algorithm
% ./parrot examples/assembly/euclid.pasm
Implements Euclid's algorithm (http://www.cuttheknot.org/blue/Euclid.shtml) and uses it to compute gcd(96,64)
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Knuth, Donald E. The Art of Computer Programming Volume 1: Fundamental Algorithms. Third Edition. Section 1.1 Algorithm E (Euclid's algorithm) Page 2:
I1: m
I2: n
I4: r
E1: Find remainder.
E2: Is it zero?
E3: Reduce.
