News for hackers. Stuff that matters.

A comment on 1/9998 = 0.0001 0002 0004 0008 0016 0032 0064 0128 0256... Parent comment

Re:1/9998 = 0.0001 0002 0004 0008 0016 0032 0064 0128 0256.. by pushedx on Thursday January 30, 2014 @02:29PM (#7152806)
This site [1] reveals the secret to that pocket calculator shortcut and a few others, and also provides useful algorithms for calculating things such as square roots and logarithms.

[1] http://tedmuller.us/Math.htm

[ Parent | on HN ]
Re:1/9998 = 0.0001 0002 0004 0008 0016 0032 0064 0128 0256.. by jloughry on Thursday January 30, 2014 @02:52PM (#7152930)
Wonderful! That site gives tests that can be performed from the keyboard to distinguish between Casio and non-Casio architectures, mentions the invisible 9th digit of precision, and notes that some calculators get it wrong.

The old Sinclair pocket calculators had some known arithmetic inaccuracies.

[ Parent | on HN ]