(12C) Greatest Common Divisor

[Gamo]

Quick and Simple program to find GCD of two integers.

Code:


 -
LSTx
X<>Y
ENTER
 x
 √
X=0
GTO 10
GTO 01
X<>Y

Thanks to Dieter for the trick by make sure that Y is greater than X so ABS don't have to be use and here is the update program.

Code:


X≤Y
X<>Y
X<>Y
  -
LSTx
X<>Y
X=0
GTO 10
GTO 01
X<>Y

Example:
Test 1 GCD (256, 656) is 16 ---> 256 ENTER 656 R/S
Test 2 GCD (12345, 67890) is 15 ---> 12345 ENTER 67890 R/S

Remark: Test 2 will run faster on HP 12C+

Gamo

[Carsen]

I love your programs Gamo since I use the HP-12C all the time! Thanks for the post.

[Gamo]

Thank You Carsen

Gamo