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Re:A list of practical projects that anyone can solve in any... by leni536 on Wednesday November 21, 2018 @05:15AM (#18501489)
I took a look at a spigot algorithm[1]. I still think it needs arbitrary precision arithmetics but maybe I miss something obvious.

[1] https://en.wikipedia.org/wiki/Bailey%E2%80%93Borwein%E2%80%9...

Re:A list of practical projects that anyone can solve in any... by dhartmei on Wednesday November 21, 2018 @05:21AM (#18501508)
Here's an example if you want to try http://www.benzedrine.ch/pi-spigot.c
Re:A list of practical projects that anyone can solve in any... by leni536 on Wednesday November 21, 2018 @05:33AM (#18501565)
This doesn't look like a spigot algorithm. It has a link in the comments[1], it calculates the digits of PI from the beginning. The code you linked seems to implement the exact same algorithm.

I don't fully comprehend the code still, but the SCALE parameter suggest that it handles the elements of the array as a fixed point representation of real numbers. I wonder if it's correct for large number of digits.

[1] http://www.codecodex.com/wiki/Calculate_digits_of_pi#C