**fn_test**,
a C++ program which
calls fn(), which
approximates elementary and special functions using Chebyshev polynomials;
functions include Airy, Bessel I, Bessel J, Bessel K, Bessel Y, beta,
confluent hypergeometric, cosine integral, Dawson's integral,
digamma (psi), error, exponential integral, gamma, hyperbolic cosine
integral, hyperbolic sine integral, incomplete gamma, log gamma,
logarithmic integral, Pochhammer, psi, sine integral, Spence;
by Wayne Fullerton.

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

fn, a C++ library which evaluates elementary and special functions using Chebyshev polynomials, including Airy, Bessel I, Bessel J, Bessel K, Bessel Y, beta, confluent hypergeometric, cosine integral, Dawson's integral, digamma (psi), error, exponential integral, gamma, hyperbolic cosine integral, hyperbolic sine integral, incomplete gamma, log gamma, logarithmic integral, Pochhammer, psi, sine integral, Spence;, by Wayne Fullerton.

- fn_test.cpp, a sample calling program.
- fn_test.sh, runs all the tests.
- fn_test.txt, the output file.