It was reported today that the record for pi is 31 trillion digits.
I don't know if this has been established already, if not, as a pi day challenge:
What is the most accurate approximation of pi that can be calculated using either the expanded or unexpanded ZX80?
Here are some suggestions for calculating pi:
https://en.wikipedia.org/wiki/Approximations_of_π
www.mathworld.wolfram.com/PiApproximations.html
Note, 10 PRINT "3.141592653589793" or similar, does not count.
Happy pi day  March 14th
A Program to Calculate Pi
The author claims over 8000 decimal places in 16K. Presumably more with extended RAM.
Regards;
Greg
Regards;
Greg
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