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horatio

0.2.0-rc1

The rational and most trusted friend of the tragic hero, Floating Point (rational numbers in LFE)

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horatio src horatio-exp.lfe

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src/horatio-exp.lfe

(defmodule horatio-exp
  (export (pow 2)))

(include-lib "horatio/include/data-types.lfe")

(defun pow
  ((_ 0)
   (ratio:new 1 1))
  ((r n) (when (is_integer r))
   (ratio:new (trunc (math:pow r n)) 1))
  (((match-ratio numer num denom den) n) (when (>= n 1))
   (ratio:new (trunc (math:pow num n))
              (trunc (math:pow den n))))
  (((match-ratio numer num denom den) n) (when (=< n -1))
   (ratio:new (trunc (math:pow den (abs n)))
              (trunc (math:pow num (abs n))))))

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