Scheme like question

[Marco Antoniotti]

Hi

apologies for the stupid question.  I was reviewing some teaching material
and looked at the following Scheme (form SICP) code about "streams".

(define (integral integrand initial-value dt)
  (define int
    (cons-stream initial-value
                 (add-streams (scale-stream integrand dt)
                              int)))
  int)

The question is how you'd rendered it in Common Lisp or how you would
provide some macrology to mimic the inner define.  I know this has been
asked before...  I am sure somebody knows the answer.

All the best

-- 
Marco Antoniotti, Professor                           tel. +39 - 02 64 48
79 01
DISCo, Università Milano Bicocca U14 2043   http://dcb.disco.unimib.it
Viale Sarca 336
I-20126 Milan (MI) ITALY
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