Loadable Function: z = gsl_sf_gamma_inc (arg1, arg2)
Loadable Function: [z, err] = gsl_sf_gamma_inc (…)

These functions compute the incomplete Gamma Function the normalization factor included in the previously defined functions: \Gamma(a,x) = \int_x\infty dt t^{a-1} \exp(-t) for a real and x >= 0.

err contains an estimate of the absolute error in the value z.

This function is from the GNU Scientific Library, see http://www.gnu.org/software/gsl/ for documentation.

Package: gsl