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Talk:SEDOLs: Difference between revisions
→Extra modulo?: Got one
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:See my '0' checksum comment above. x mod 10 is in the range 0..9, so 10-(x mod 10) is in the range 1..10. The extra mod brings it back into the 0..9 range. We should have add a test case which exercises this. --[[User:IanOsgood|IanOsgood]] 21:09, 3 February 2010 (UTC)
::I knew there had to be a reason which is why I didn't just change it right away. I agree we should have a test case for that. Do you know of one? You could just have the computer try random sequences until it gets one. --[[User:Mwn3d|Mwn3d]] 21:27, 3 February 2010 (UTC)
::B00030 gives a 0 check digit and I think it might be in the real range for SEDOLs. I think it gets that case. The weighted sum is 10. (10 - (10 mod 10)) = 10. (10 - (10 mod 10)) mod 10 = 0. We should add it to the examples. --[[User:Mwn3d|Mwn3d]] 21:37, 3 February 2010 (UTC)
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