bdf2_test

bdf2_test, a Fortran77 code which calls bdf2(), which solves one or more ordinary differential equations (ODE) using the (implicit) backward difference formula order 2 (BDF2) method, with a version of fsolve() handling the associated nonlinear equation, and using a fixed time step.

Licensing:

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

Related Data and codes:

bdf2, a Fortran77 code which solves one or more ordinary differential equations (ODE) using the (implicit) backward difference formula order 2 (BDF2) method, with a version of fsolve() handling the associated nonlinear equation, and using a fixed time step.

Source Code:

• bdf2_test.f, calls all the tests.
• bdf2_test.sh, runs all the tests.
• bdf2_test.txt, the output file.

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