cdflib_test, a C++ code which calls cdflib(), which evaluates cumulative probability functions (CDF).
The computer code and data files described and made available on this web page are distributed under the MIT license
cdflib, a C++ code which evaluates the cumulative density function (CDF), inverse CDF, and certain other inverse functions, for distributions including beta, binomial, chi-square, noncentral chi-square, F, noncentral F, gamma, negative binomial, normal, Poisson, and students T, by Barry Brown, James Lovato, Kathy Russell.