**fn_test**,
a FORTRAN77 code 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 FORTRAN77 code 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.

- fn_test.f, a sample calling program.
- fn_test.sh, commands to compile and run the sample program.
- fn_test.txt, the output file.