Calculate pi.
Generates pi, using the formula:
Pi=16*arctan(1/5)-4*arctan(1/239)
and leaves the result in an array \xr.
The number of digits you can compute depends on your implementation of TeX. The last digit may be wrong, and if it's 0 or 9, the penultimate digit may also be wrong.
The author is Denis B. Roegel.
License: unknown Version: 0.993 Catalogued: 2005-12-01