Re: Lisp object code versus that of other languages

It depends on your optimization settings. Remember, Lisp takes care of
types for you. So, something as simple as:

(defun add (a b)
(+ a b))

can produce lots of assembly code; it has to handle adding integers,
reals, complex numbers, .... However, now try:

(defun add-optimized (a b)
(declare (fixnum a b))
(the fixnum (+ a b)))

Now that is looking much better and there is still debugging
information in there, so you can declare even more (optimize 3),
(safety 0), (debug 0), and now you're starting to get extremely close
to C.

Jeff M.

.

Relevant Pages

  • Re: Easier type declarations?
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    (comp.lang.lisp)
  • Re: factorial of largish numbers
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    (comp.lang.lisp)
  • (exp (/ z))
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  • Re: sound synthesis
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    (comp.lang.lisp)
  • Asking for Alioth shootout help on "fasta" benchmark
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    (comp.lang.lisp)