Binding to GSL library

[drug via Digitalmars-d-learn]

On 25.11.2015 19:11, Radek wrote:
> Hi, I'm making a trying to bind a gsl library
> http://www.gnu.org/software/gsl/ so far it was working but when i
> started binding complex numbers some functions won't work, like
> trigonometric functions - called they return null.
>
> in gsl code complex struct looks like:
>
> typedef struct
>    {
>      double dat[2];
>    }
> gsl_complex;
>
>
> my complex struct looks like that:
>
> struct _gsl_complex {
>    double dat[2];
> }
> alias gsl_complex = _gsl_complex*;
>
> So, what im doing wrong?
A little bit offtopic but do you know about 
https://github.com/abrown25/gsld? It would be nice to join efforts.