euler, a FORTRAN90 code which solves one or more ordinary differential equations (ODE) using the forward Euler method.
The computer code and data files described and made available on this web page are distributed under the MIT license
euler is available in a C version and a C++ version and a FORTRAN90 version and a FreeFem++ version and a MATLAB version and an Octave version and a Python version and an R version.
lorenz_ode, a FORTRAN90 code which approximates solutions to the Lorenz system.
midpoint_explicit, a FORTRAN90 code which solves one or more ordinary differential equations (ODE) using the (explicit) midpoint method.
midpoint_fixed, a FORTRAN90 code which solves one or more ordinary differential equations (ODE) using the (implicit) midpoint method, using a fixed point method for the implicit equation.
rk4, a FORTRAN90 code which applies the fourth order Runge-Kutta (RK) algorithm to estimate the solution of an ordinary differential equation (ODE).
spring_ode, a FORTRAN90 code which shows how line printer graphics can be used to make a crude illustration of a solution of the ordinary differential equation (ODE) that describes the motion of a weight attached to a spring.
test_ode, a FORTRAN90 code which defines ordinary differential equations (ODE) test problems.