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Changeset 2786 for branches


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Timestamp:
2015-06-20T20:46:24-07:00 (9 years ago)
Author:
Marek Rychlik
Message:

* empty log message *

File:
1 edited

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  • branches/f4grobner/polynomial.lisp

    r2785 r2786  
    192192
    193193
    194 ;; Multiplication of polynomials
    195 ;; Non-destructive version
    196 (defun termlist-mul (ring-and-order p q
    197                      &aux (ring (ro-ring ring-and-order)))
    198   (declare (ring-and-order ring-and-order))
     194(defmethod multiply-by ((self poly) (other poly))
    199195  (cond ((or (endp p) (endp q)) nil)    ;p or q is 0 (represented by NIL)
    200         ;; If p=p0+p1 and q=q0+q1 then pq=p0q0+p0q1+p1q
     196        ;; If p=p0+p1 and q=q0+q1 then p*q=p0*q0+p0*q1+p1*q
    201197        ((endp (cdr p))
    202198         (term-times-termlist ring (car p) q))
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