MATLAB: I need to have output of qfunc as a handle function

Question

all,

I need to have output of qfunc as a handle function but I face following error:

error:  """Error using qfunc 
The argument of the Q function must be a real array."""

so does anybody know how can I use handle function in qfunction??????

 myf = @(ebn0)BER32APSK(c,M,ebn0)-p;

and inside of BER32APSK I would have:

fsum = fsum + qfunc(sqrt(((d2)*(log2(M))*ebn0)/2));

Answer 1

One of d2 or log2(M) or ebn0 are not real-valued.

In particular check for the possibility that M is negative, as log of a negative number would give imaginary values.