30 lines
1.6 KiB
Text
30 lines
1.6 KiB
Text
{script
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LAMBDATALK.DICT["spigot"] = function() {
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function generateDigitsOfPi(max) {
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var pi = "";
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var z = 0;
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var q = 1n;
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var r = 180n;
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var t = 60n;
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var i = 2n;
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while (z < max) {
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var digit = ((i * 27n - 12n) * q + r * 5n) / (t * 5n);
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pi += digit;
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var u = (i * 3n + 1n) * 3n * (i * 3n + 2n);
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r = u * 10n * (q * (i * 5n - 2n) + (r - t * digit));
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q = q * 10n * i * (i * 2n - 1n);
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i = i + 1n;
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t = t * u;
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z++;
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}
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return pi
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}
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var args = arguments[0].trim();
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return generateDigitsOfPi( args );
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};
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}
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We can generate 1000 digits of π in about 70ms
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3.{W.rest {spigot 100}}
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-> 3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117067982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930381964428810975665933446128475648233786783165271201909145648566923460348610454326648213393607260249141273724587006606315588174881520920962829254091715364367892590360011330530548820466521384146951941511609433057270365759591953092186117381932611793105118548074462379962749567351885752724891227938183011949129833673362440656643086021394946395224737190702179860943702770539217176293176752384674818467669405132000568127145263560827785771342757789609173637178721468440901224953430146549585371050792279689258923542019956112129021960864034418159813629774771309960518707211349999998372978049951059731732816096318595024459455346908302642522308253344685035261931188171010003137838752886587533208381420617177669147303598253490428755468731159562863882353787593751957781857780532171226806613001927876611195909216420198
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