Just another update

Task/Pi/Racket/pi-1.rkt

@@ -0,0 +1,19 @@
+#lang racket
+(require racket/generator)
+
+(define pidig
+  (generator ()
+    (let loop ([q 1] [r 0] [t 1] [k 1] [n 3] [l 3])
+      (if (< (- (+ r (* 4 q)) t) (* n t))
+        (begin (yield n)
+               (loop (* q 10) (* 10 (- r (* n t))) t k
+                     (- (quotient (* 10 (+ (* 3 q) r)) t) (* 10 n))
+                     l))
+        (loop (* q k) (* (+ (* 2 q) r) l) (* t l) (+ 1 k)
+              (quotient (+ (* (+ 2 (* 7 k)) q) (* r l)) (* t l))
+              (+ l 2))))))
+
+(for ([i (in-naturals)])
+  (display (pidig))
+  (when (zero? i) (display "." ))
+  (when (zero? (modulo i 80)) (newline)))

Task/Pi/Racket/pi-2.rkt

@@ -0,0 +1 @@
+3.14159265358979323846264338327950288419716939937510...

Task/Pi/Racket/pi.rkt

@@ -1,4 +0,0 @@
-#lang racket
-(require math/bigfloat)
-(bf-precision (exact-floor (/ (* 200 (log 10)) (log 2))))
-pi.bf