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Add me: Factor #2

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shnarazk opened this issue Dec 12, 2023 · 0 comments

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shnarazk commented Dec 12, 2023 •

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2024-02-09
golfed

USING: kernel math ;
IN: leibniz

: lpi ( num-of-pairs: integer -- pi )
  0.0 0 rot
  [ [ 4.0 * [ 3.0 + ] [ 1.0 + ] bi * 2.0 swap / + ] keep 1 + ] times
  drop 4 *
;

2023-12-12

USING: kernel math ;
IN: Leibniz

: calcpi ( -- pi index )
    0.0 0
    [
        dup [ 4.0 * [ 3.0 + ] [ 1.0 + ] bi * 2.0 swap / + ] dip
　　　　　 1 +
　　　　　dup 100000000 <
    ] loop
    [ 4 * ] dip
    ! drop
    ;

100M pairs => 0.137 sec. on 2.3GHz dual core Core i5 😲

shnarazk self-assigned this

shnarazk added the enhancement label

shnarazk closed this as completed

shnarazk changed the title ~~Add me~~ Add me: Factor

shnarazk reopened this

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