Computes the derivative of the scaled Airy function S_A(x) Ai(x).
err contains an estimate of the absolute error in the value z.
The argument mode must be an integer corresponding to
Double-precision, a relative accuracy of approximately 2e-16.
Single-precision, a relative accuracy of approximately 1e-7.
Approximate values, a relative accuracy of approximately 5e-4.
This function is from the GNU Scientific Library, see http://www.gnu.org/software/gsl/ for documentation.
Package: gsl