**midpoint_test**,
a Fortran90 code which
calls midpoint(), which
solves one or more ordinary differential equations (ODE)
using the (implicit) midpoint method, with a version of
fsolve() handling the associated nonlinear equation,
and using a fixed time step.

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

midpoint, a Fortran90 code which solves one or more ordinary differential equations (ODE) using the (implicit) midpoint method, with a version of fsolve() handling the associated nonlinear equation, and using a fixed time step.

- midpoint_test.f90, calls all the tests.
- midpoint_test.sh, runs all the tests.
- midpoint_test.txt, the output file.

- predator_prey.png, a plot of the solution.
- stiff.png, a plot of the solution.