[Chicken-users] blob or f64vector

[Eduardo Cavazos]

> Eduardo Cavazos wrote:
>
> > > What could I change that to such that blobs are allowed as the second
> > > argument?

Jim Ursetto wrote:

> void  glGetDoublev( GLenum pname, ___byte_vector params );
>
> (The egg should probably be updated to replace or alias ___blob to
> ___byte_vector...)

This did the trick. But I have another question...

In easy ffi, if a function parameter type is 'double', then it expects 
you to pass a SRFI-4 'f64vector'. Under the covers, this is just a blob. 
 So my question was about how to pass a blob directly. And all is well.

My new question is, is there a way to specify a type such that the 
function will accept a blob *or* some SRFI-4 vector? I.e. if you pass a 
SRFI-4 vector, you'll benefit from the nice type checking. If you pass a 
blob, it works but you don't get the type checking.

For example, if the type of a parameter is 'double', the ffi check goes 
as follows. If the argument is a blob, it's sent directly. Otherwise it 
*must* be an f64vector. Something along those lines.

Ed