Re: [eclipse-clp-users] Managing lists of real variable

From: Kish Shen <kisshen_at_...5...>
Date: Wed, 14 Oct 2009 17:54:31 +0100
simone pascucci wrote:
> conversion if they want to pass the result to java (I suppose I should cast
> the breals to float), but I'm experiencing a infinite loop (or at least
> something like that). This happen for example if I add at the very end the
> following
> 
>        locate(Variables, 1e-5),
>        float(Amount).
> 
float(Amount) does not convert a number into a float -- it is a test for 
a float, and I assume in your case, it fails because you have a bounded 
real, so it fails back into the locate/2 labelling.

You should check the documentation when you are using a built-in you are 
not familiar with -- ECLiPSe allows you to do this easily from the 
top-level, you simply have to type help <predicate spec>, in your case,
help float/1. Als0, since variables in ECLiPSe cannot be destructively 
assigned, there is no way you can perform a conversion with a predicate 
with only one argument.

To convert a number into a float, you need to use float/2 (see the 
documentation).

Cheers,

Kish


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Received on Wed Oct 14 2009 - 16:54:43 CEST

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