Talk:Greatest common divisor

errors in programs

A few programs would attempt to divide by zero if the 2nd argument is 0 (zero).
In that special case, the absolute value of the first argument should be returned.

unless it is 0 --Walterpachl 12:40, 17 August 2012 (UTC)

A number of examples don't show the results if either argument is negative.

REXX Version 1

These results seem to be wrong:

the GCD of 14 and 0 and 7 is 14 should be 7

the GCD of 0 and 7 is 0 should be 7

the GCD of 0 and 0 is 0 should be ???

correct:

the GCD of 7 and 0 is 7

--Walterpachl 12:06, 17 August 2012 (UTC)

PL/I

should return a positive integer

and take care of gcd/0,0)

--Walterpachl 12:39, 17 August 2012 (UTC)