Actually, this is what I have:
in C
double complex a, b, z
int lnchf ip
out = conhyp_ (&a, &b, &z, &lnchf, &ip) ;
In Fortran:
FUNCTION CONHYP (A,B,Z,LNCHF,IP)
INTEGER LNCHF,IP
COMPLEX*16 CHGF,A,B,Z,CONHYP
And what I get is
A= b, B=z (the other values are wrong)
It means that the first variable (here a) is just lost
How can I fix this?
>
> > in c, I use double complex
> > in f95, I use COMPLEX*16
>
> Never heard of double complex in c.
>
> Fortran passes all arguments by reference, so a fortran
> routine that has a complex*16 arg probably needs something
> like this in C
>
> struct c16 {
> double real;
> double imag;
> };
>
> fortran_routine(struct c16* arg);
>
> That would be my guess, anyway.
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