OpenEuphoria

Re: How can I pass an atom to a C function as C float or double

• Posted by Elliott Sales de Andrade <quantum_analyst at hotmail.com> Sep 14, 2003
• 336 views

>From: Diana Nistor <myotis at xnet.ro>
>Subject: Re: How can I pass an atom to a C function as C float or double
>
>
>I really don't know what is the problem
>with my email program ...=20
>Sory for all that "=3D20 ... ".
>

Sometimes Topica screws it up itself.

>Also, the message I send have some line
>deleted.=20

I thought they were in the other message....

>I write here again :
>
>
>EXAMPLE :
>// C function in dll remain the same :
>void MyFunction(float ParameterA);
>
>-- but in euphoria I define the function like this :
>constant xMyFunction =3D define_c_proc(mydll, "MyFunction", {C_INT})
>
>-- then in the procedure I did the magic thing :
>procedure MyFunction(atom ParameterA)
>
>ParameterA =3D bytes_to_int(atom_to_float32(ParameterA))
>
>c_proc(xMyFunction, ParameterA)
>
>end procedure
>

This is technically, the same as the memory thing, but without pointers.
Please see other post.

>Please tell me what you think about this ...
>I did some tests and it work. The problem is that is slow.
>
>Sorry again.
>Diana Nistor
>
>
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