Happy π Day

Today is the day we celebrate the ratio of the circumference to the diameter of the unit circle.  Hooray!  I was going to post an algorithm to calculate π accurate to 2037 digits but I don’t have the patience, desire, or time before midnight tonight to apply the Fast Fourier Transform to this mess:

Srinivasa Ramanujan's formula for approximating π

Srinivasa Ramanujan's formula for approximating π

See you on τ day!

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