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Changeset 409 for branches


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Timestamp:
2015-06-06T19:11:44-07:00 (9 years ago)
Author:
Marek Rychlik
Message:

* empty log message *

File:
1 edited

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  • branches/f4grobner/ring.lisp

    r408 r409  
    5656
    5757(defparameter *ring-of-integers*
    58   "Defines the ring of integers, which is an instance of RING structure."
    59     (make-ring
    60      :parse #'identity
    61      :unit #'(lambda () 1)
    62      :zerop #'zerop
    63      :add #'+
    64      :sub #'-
    65      :uminus #'-
    66      :mul #'*
    67      :div #'/
    68      :lcm #'lcm
    69      :ezgcd #'(lambda (x y &aux (c (gcd x y))) (values c (/ x c) (/ y c)))
    70      :gcd #'gcd)
     58  (make-ring
     59   :parse #'identity
     60   :unit #'(lambda () 1)
     61   :zerop #'zerop
     62   :add #'+
     63   :sub #'-
     64   :uminus #'-
     65   :mul #'*
     66   :div #'/
     67   :lcm #'lcm
     68   :ezgcd #'(lambda (x y &aux (c (gcd x y))) (values c (/ x c) (/ y c)))
     69   :gcd #'gcd)
    7170  "The ring of integers.")
    7271
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