ref: db94d6ef1f745bfc50211a20c0e4b3553bff72b0 dir: /femtolisp/pisum.lsp/
(define (pisum) (dotimes (j 500) ((label sumloop (lambda (i sum) (if (> i 10000) sum (sumloop (+ i 1) (+ sum (/ (* i i))))))) 1.0 0.0)))