Contents

;;; grains.el --- Grains exercise (exercism)

;;; Commentary:

;;; Code:

(require 'cl)

(defun square (n)
  "Find the number of grains on square N."
  (string-to-number (calc-eval (format "2^(%d - 1)" n))))

(defun total ()
  "Find the total number of grains on the board."
  (string-to-number (calc-eval "2^64 - 1")))

(provide 'grains)
;;; grains.el ends here

Version data entries

216 entries across 216 versions & 1 rubygems

Version	Path
trackler-2.2.1.119	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.118	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.117	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.116	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.115	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.114	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.113	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.111	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.110	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.109	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.108	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.107	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.106	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.105	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.104	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.103	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.102	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.101	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.100	tracks/elisp/exercises/grains/example.el
trackler-2.2.1.99	tracks/elisp/exercises/grains/example.el