20M digits of pi in 1 minute using Julia

CommunityNews · 4 March 2023 15:25

gauss-legendre.md.
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gauss-legendre.md

20 million digits of pi in under a minute with Julia
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I recently discovered a relatively obscure algorithm for calculating the digits of pi: https://en.wikipedia.org/wiki/Gauss–Legendre_algorithm.
Well, at least obscure compared to Chudnovsky's. Wikipedia notes that it is "memory-intensive" but is it really?
Let's compare to the MPFR `pi` function:
```julia
function gauss_legendre(prec)
    setprecision(BigFloat, prec, base=10)
    GC.enable(false)

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bot · 4 March 2023 15:25

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