disk01_integrals, a FORTRAN77 code which returns the exact value of the integral of any monomial over the interior of the unit disk in 2D.
The interior of the unit disk in 2D is defined by
x^2 + y^2 <= 1
The integrands are all of the form
f(x,y) = x^e1 * y^e2
where the exponents are nonnegative integers.
If any exponent is an odd integer, the integral will be zero.
Thus, the "interesting" results occur when all exponents are even.
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
disk01_integrals 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.
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DISK01_MONTE_CARLO, a FORTRAN77 library which uses the Monte Carlo method to estimate the integral of a function over the interior of the unit disk in 2D.
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