Created
April 5, 2011 03:07
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Leibniz formula for PI
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| let inverse x = 1.0/x | |
| let inverseNext x = 1.0/(x+2.0) | |
| let substractNextInverse x = inverse x - inverseNext x | |
| let skip4List accuracy = [1.0 .. 4.0 .. accuracy] | |
| let add a b = a + b | |
| let inverses accuracy = (List.map substractNextInverse (skip4List accuracy)) | |
| let PI accuracy = (List.reduce add (inverses accuracy)) * 4.0 | |
| let pi10000000 = PI 10000000.0 |
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