[PPL-devel] question about ppl and prolog.

[P M Hill]

Dear Jie,

We would be happy to help you get started with the PPL, but you do not 
give us much information.

I assume you have successfully installed the PPL and at least one of the 
Prolog interfaces. Is this correct? Then, in this case, we need to know 
which Prolog interfaces you have installed. The way we use the Prolog 
interface for the PPL partly depends on the Prolog system itself.

There are several examples of Prolog programs that use the PPL included in 
the `ppl/interfaces/Prolog/tests' directory (clpq.pl, clpq2.pl and 
pl_check.pl). Any extra code needed for the specific Prolog system to be 
used are in the appropriate subdirectories. You can see these being run if 
you do a "make check" for the Prolog System you have installed. I suggest 
you look at at least one of these examples to see how things work before 
writing your own interface. Note that the program pl_check.pl executes 
every one of the Prolog predicates provided by the PPL and, hence, 
provides examples of their use.

As regards "initializing" the library, normally, in the Prolog code, 
before using any of the main PPL predicates, you should first call the 
proposition:
  ppl_initialize.
This, in fact, initializes the PPL system.

Information about the installation and use of the Prolog systems is also 
in the documentation. Have a look at the section on "System-Dependent 
Features" for your Prolog system you are using.

If you want more help, let us know which Prolog system you are 
using and if you can run "make check" successfully on this system.

All the best,
   Pat

On Tue, 26 Apr 2005, jouyang wrote:

> Hi,
> I am new to PPL and Prolog. I am trying to use PPL in Prolog programs.
> Can someone give an example showing how to initialize the library and
> use the interfaces.  Thanks in advance.
>
>
> Jie
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>