asa245, a C++ code which evaluates the logarithm of the gamma function, by Allan McLeod.
ASA245 is Applied Statistics Algorithm 245.
The computer code and data files described and made available on this web page are distributed under the MIT license
asa245 is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version.
fn, a C++ code which approximates elementary and special functions using Chebyshev polynomials, by Wayne Fullerton.
GSL, a C++ code which includes many routines for evaluating special functions.
TEST_VALUES, a C++ code which contains sample values for a number of distributions.
TOMS291, a C++ code which evaluates the logarithm of the Gamma function.