toms577, a C++ code which evaluates Carlson's elliptic integral functions RC, RD, RF and RJ.
The text of many ACM TOMS algorithms is available online through ACM: https://calgo.acm.org/ or NETLIB: https://www.netlib.org/toms/index.html.
The information on this web page is distributed under the MIT license.
toms577 is available in a C version and a C++ version and a Fortran90 version and a MATLAB version and an Octave version and a Python version.
elliptic_integral, a C++ code which evaluates complete elliptic integrals of first, second and third kind, using Carlson's elliptic integral functions.
test_values, a C++ code which supplies test values of various mathematical functions.