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21
Task/Pi/PicoLisp/pi.l
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21
Task/Pi/PicoLisp/pi.l
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#!/usr/bin/picolisp /usr/lib/picolisp/lib.l
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(de piDigit ()
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(job '((Q . 1) (R . 0) (S . 1) (K . 1) (N . 3) (L . 3))
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(while (>= (- (+ R (* 4 Q)) S) (* N S))
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(mapc set '(Q R S K N L)
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(list
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(* Q K)
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(* L (+ R (* 2 Q)))
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(* S L)
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(inc K)
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(/ (+ (* Q (+ 2 (* 7 K))) (* R L)) (* S L))
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(+ 2 L) ) ) )
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(prog1 N
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(let M (- (/ (* 10 (+ R (* 3 Q))) S) (* 10 N))
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(setq Q (* 10 Q) R (* 10 (- R (* N S))) N M) ) ) ) )
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(prin (piDigit) ".")
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(loop
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(prin (piDigit))
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(flush) )
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