Hi, according to http://people.math.sfu.ca/~cbm/aands/page_260.htm, def. 6.5.3, the Incomplete Gamma function \Gamma(a,x) can be defined for all values of x, included negative numbers.
Why is GSL computing it only for x>=0? http://www.gnu.org/software/gsl/manual/html_node/Incomplete-Gamma-Functions.html I tried to find a way to reduce the negative case to some other formula but I cannot find it. Thanks for your help, Francesco _______________________________________________ Help-gsl mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-gsl
