I don't think you can declare something to be a "list of floats". But you
can handle each element with a float variable, e.g.
f(l,k):= block([s], mode_declare([s],float,[k],integer), for li in l do
(mode_declare([li],float), s:s+li^k), s);
Do you see how you'd do that in your case?
-s
On Tue, Oct 18, 2011 at 08:21, Panagiotis Papasotiriou <
p.j.papasot at gmail.com> wrote:
> Stavro,
>
> k1 is actually a list of one (float) element in this particular example (in
> the general case, when solving a system of differential equations, k1 would
> have more than one elements.) So the question is, how can I mode_declare a
> list of floats so that it will work as expected when the code is translated?
>
> thank you for helping
>
> 2011/10/18 Stavros Macrakis <macrakis at alum.mit.edu>
>
>> The error message is showing that k1 is a list containing one number, not
>> a number. Is that enough information to help you debug?
>>
>> Thanks for your work on improving and extending Maxima's numerical
>> capabilities!
>>
>> -s
>> On Oct 18, 2011 7:54 AM, "Panagiotis Papasotiriou" <p.j.papasot at gmail.com>
>> wrote:
>>
>>> Could you please replace rkf45_translated.mac with that one:
>>>
>>>
>>> https://sites.google.com/site/pjpapasot/maxima/temporary/rkf45_translated.mac?attredirects=0&d=1
>>>
>>> and run Test.mac again? In that version of rkf45_translated, most local
>>> variables are declared as "float" instead of "any" (which is correct.)
>>> However, in my system that gives the following error when I run Test.mac:
>>>
>>> Maxima encountered a Lisp error:
>>> Error in * [or a callee]: ((MLIST SIMP) 1.9999800000000002E-7) is not of
>>> type NUMBER.
>>>
>>> The error is actually generated at line 113 of the code, which reads:
>>>
>>> k2:h*odes(xi+0.25*h,yi+0.25*k1),
>>>
>>> here, k1, computed at line 112, is 1.9999800000000002E-7 and, for some
>>> reason, that value is not accepted as a number, hence the error. I am
>>> curious to know if you get the same error.
>>>
>>> 2011/10/18 Michel Talon <talon at lpthe.jussieu.fr>
>>>
>>>> Panagiotis Papasotiriou wrote:
>>>> > Everything is installed from Debian repositories. Maxima version
>>>> installed
>>>> > is 5.24, as this is the "official" latest release yet. SBCL is also
>>>> > installed from the original Debian package, and it it version 1.0.51.
>>>> >
>>>>
>>>> Sure, but i am not so confident that everything in Debian repositories
>>>> work
>>>> OK. For example i have seen severely broken mplayer coming from "quasi
>>>> official" repositories, and i had to recompile it myself. In the present
>>>> cases
>>>> i have doubts about sbcl, since you have already seen two problems.
>>>> Maybe this
>>>> 64 bits sbcl doesn't work OK, i don't know.
>>>>
>>>>
>>>>
>>>> --
>>>> Michel Talon
>>>>
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>>>>
>>>
>>>
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>>>
>
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